Answerbag: PerpetualAFK's answers http://www.answerbag.com/profile/113396 New Answerbag answers from PerpetualAFK Mon, 28 May 2012 20:20:08 -0700 Mon, 28 May 2012 20:20:08 -0700 Answer to The earth orbits around the sun at approx. 18642mph. A shuttle uses approx 14,500mph to get out off earths gravitational pull. When a shuttle launches out off earths orbit, does it add on earths orbital speed or stay its own and why or why not? http://www.answerbag.com/a_view/6750503 The earth orbits around the sun at approx. 18642mph. A shuttle uses approx 14,500mph to get out off earths gravitational pull. When a shuttle launches out off earths orbit, does it add on earths orbital speed or stay its own and why or why not?<br /><br />Yes it does add on the earth&#039;s orbital speed. HOWEVER, since the shuttle ends up orbiting earth, which travels at the orbital speed, this boost is essentially useless. If the shuttle didn&#039;t add on earth&#039;s obital speed, the moment it left earth, it would just stay in one spot, while... Tue, 09 Jun 2009 12:09:51 -0700 http://www.answerbag.com/a_view/6750503 Answer to What happens to the initial reaction rate as substrate concentration increases? http://www.answerbag.com/a_view/6750465 What happens to the initial reaction rate as substrate concentration increases?<br /><br />The reaction rate is given by [substrate]^N, where [substrate] is the concentration of the substrate and N is the stoichiometric coefficient in fron tof the substrate in the reaction equation. Ie, CH4+2O2 -&gt; CO2+2H2O the reaction rate is a constant * [CH4]^1 * [O2]^2 More generally ... Tue, 09 Jun 2009 12:06:57 -0700 http://www.answerbag.com/a_view/6750465 Answer to A string, fixed at both ends vibrates at a frequency of 12Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops? A. 12Hz B. 16 Hz C. 36 Hz D. 48Hz http://www.answerbag.com/a_view/6750400 A string, fixed at both ends vibrates at a frequency of 12Hz with a standing transverse wave pattern containing 3 loops. What frequency is needed if the standing wave pattern is to contain 4 loops? A. 12Hz B. 16 Hz C. 36 Hz D. 48Hz<br /><br />You require 16Hz. The fundamental frequency of the string is 4Hz, which will give 1 loop. 8Hz, the first harmonic, gives 2 loops. 12 gives 3 loops, and 16 gives 4 loops. Tue, 09 Jun 2009 12:02:03 -0700 http://www.answerbag.com/a_view/6750400 Answer to Is it possible to survive a headshot from a DSR.50 ? (.50 cal at sniper rifle) http://www.answerbag.com/a_view/6750301 Is it possible to survive a headshot from a DSR.50 ? (.50 cal at sniper rifle)<br /><br />NO. The impact of a sniper round hitting you from a mile away is approximately the same as a point blank shot from a pistol. Tue, 09 Jun 2009 11:54:44 -0700 http://www.answerbag.com/a_view/6750301 Answer to Does anyone know of any good website that I can go to, that will help me to improve my typing and data entry skills? http://www.answerbag.com/a_view/6749988 Does anyone know of any good website that I can go to, that will help me to improve my typing and data entry skills?<br /><br />I learned typing using the Mavis Beacon program. Reviewers consistently place them first among all typing programs. I have used about half a dozen programs myself, and Mavis Beacon is by far the best and most comprehensive. Tue, 09 Jun 2009 11:23:53 -0700 http://www.answerbag.com/a_view/6749988 Answer to Should we stop producing soft drinks with Carbon Dioxide in them? Isn't it bad for the planet? http://www.answerbag.com/a_view/6749912 Should we stop producing soft drinks with Carbon Dioxide in them? Isn't it bad for the planet?<br /><br />The amount of CO2 in a can of pop is a few grams. You breathe out more CO2 in one minute than the CO2 in one can of pop. If we really want to slow climate change, we should get rid of Hummers and the like. Tue, 09 Jun 2009 11:16:46 -0700 http://www.answerbag.com/a_view/6749912 Answer to Will i be able to save documents , created in "open office " , when i convert to " MS office pro 2003 "? http://www.answerbag.com/a_view/6749872 Will i be able to save documents , created in "open office " , when i convert to " MS office pro 2003 "?<br /><br />Yes you will. Open office is compatible with Office 2003. Tue, 09 Jun 2009 11:13:01 -0700 http://www.answerbag.com/a_view/6749872 Answer to When the last time you have a cramp? http://www.answerbag.com/a_view/6749862 When the last time you have a cramp?<br /><br />Sometimes I get cramps in my leg when I sleep. It&#039;s really painful and annoying in the middle of the night. Tue, 09 Jun 2009 11:12:19 -0700 http://www.answerbag.com/a_view/6749862 Answer to What would be a good song for a movie made on imac ( slide show) the pictures behind it are happy and of talent that my niece has. i want something upbeat to show her "all around happy" attitude. birthday/beatles &my wish/rascal flats so far. thanks! (0 a http://www.answerbag.com/a_view/6749843 What would be a good song for a movie made on imac ( slide show) the pictures behind it are happy and of talent that my niece has. i want something upbeat to show her "all around happy" attitude. birthday/beatles &my wish/rascal flats so far. thanks! (0 a<br /><br />My Wish is a really good choice (the lyrics fit perfectly). However, it doesn&#039;t really invoke &quot;happiness&quot;. Also, the music is too heavy in my opinion for a background music for a slideshow about talent. It would be more fitting for, say, a tribute slideshow. My recommendation is... Tue, 09 Jun 2009 11:10:57 -0700 http://www.answerbag.com/a_view/6749843 Answer to Do Khaki and light purple go together? http://www.answerbag.com/a_view/6749742 Do Khaki and light purple go together?<br /><br />Yes they do. An easy way to tell if 2 colours go together is looking at a colour wheel. If the 2 colours are on opposite sides, they complement each other (ie go well together). The colour wheel is yellow-red-blue. Khaki is beige, so it&#039;s close to yellow. Purple is the combination of red and... Tue, 09 Jun 2009 11:01:48 -0700 http://www.answerbag.com/a_view/6749742 Answer to Help! how do you know the difference(in algebra) between: ~no solution, infinitely many solutions, cannot be determined... while solving a system of equations?Thanks so much! http://www.answerbag.com/a_view/2500285 Help! how do you know the difference(in algebra) between: ~no solution, infinitely many solutions, cannot be determined... while solving a system of equations?Thanks so much!<br /><br />sigh...ok. stupid useless textbooks. take your matrix, and do gauss-jordan elimination to get it into reduced-row eschelon form (the one where there&#039;s a diagonal line of 1&#039;s and the rest all 0&#039;s). If there is at least one row in the bottom that is all 0&#039;s [0 0 .... 0 | 0],... Sat, 15 Mar 2008 18:14:57 -0700 http://www.answerbag.com/a_view/2500285 Answer to Can a person still fly an aircraft for the air force when thety have bad eyes? http://www.answerbag.com/a_view/2499284 Can a person still fly an aircraft for the air force when thety have bad eyes?<br /><br />They can get laser vision correction. Otherwise, they can&#039;t fly, because you can&#039;t wear glasses or contacts on a flight. Sat, 15 Mar 2008 15:31:40 -0700 http://www.answerbag.com/a_view/2499284 Answer to What is more powerful? A 6.8mm Remington or a 7.62mm bullet? http://www.answerbag.com/a_view/2499279 What is more powerful? A 6.8mm Remington or a 7.62mm bullet?<br /><br />Would depend on the gun that&#039;s firing it. The energy of a bullet is 0.5 * (mass) * (speed squared). A smaller cartridge fired from a gun with greater muzzle velocity will still have more energy than a heavy cartridge fired more slowly. Sat, 15 Mar 2008 15:30:50 -0700 http://www.answerbag.com/a_view/2499279 Answer to Where can I purchase a silencer for either an MP5 or an M4/AR-15? http://www.answerbag.com/a_view/2499265 Where can I purchase a silencer for either an MP5 or an M4/AR-15?<br /><br />Yes. Silencers are illegal. Sat, 15 Mar 2008 15:28:19 -0700 http://www.answerbag.com/a_view/2499265 Answer to Are all atoms the same size? http://www.answerbag.com/a_view/2499247 Are all atoms the same size?<br /><br />No. An atom with more electrons will have electrons in higher energy orbitals, which are larger physically. However, for a given orbital, the more electrons are in it, the smaller the orbital. Thus, if you look at a periodic table of elements, for each row, the size of the atom decreases going... Sat, 15 Mar 2008 15:25:16 -0700 http://www.answerbag.com/a_view/2499247 Answer to What is the definition of infinity (potential and actual) and any extra or intresting facts about it http://www.answerbag.com/a_view/2499226 What is the definition of infinity (potential and actual) and any extra or intresting facts about it<br /><br />1/0 Sat, 15 Mar 2008 15:18:41 -0700 http://www.answerbag.com/a_view/2499226 Answer to Help! how do you know the difference(in algebra) between: ~no solution, infinitely many solutions, cannot be determined... while solving a system of equations?Thanks so much! http://www.answerbag.com/a_view/2499224 Help! how do you know the difference(in algebra) between: ~no solution, infinitely many solutions, cannot be determined... while solving a system of equations?Thanks so much!<br /><br />read your textbook or consult wikipedia. Sat, 15 Mar 2008 15:17:49 -0700 http://www.answerbag.com/a_view/2499224 Answer to What, besides a car, would be considered a composite structure. Would plexiglass or bulletproof glass? http://www.answerbag.com/a_view/2499152 What, besides a car, would be considered a composite structure. Would plexiglass or bulletproof glass?<br /><br />Materials such as plexiglass or bulletproof glass would all be considered composite *materials*, though not as composite *structures*. A composite structure is defined as a structure that is a combination of two or more materials, each of which retains it own distinctive properties. Thus, not... Sat, 15 Mar 2008 15:02:13 -0700 http://www.answerbag.com/a_view/2499152 Answer to Electrical can you give me an explanation why a back EMF is developed across a coil when an alternating potential differance is applied across it? http://www.answerbag.com/a_view/2499094 Electrical can you give me an explanation why a back EMF is developed across a coil when an alternating potential differance is applied across it?<br /><br />It&#039;s because of Faraday&#039;s induction law. A current through a coil will induce a magnetic field. The magnetic field will attempt to resist the initial flow of current (due to conservation of energy). This causes the back EMF. Sat, 15 Mar 2008 14:52:25 -0700 http://www.answerbag.com/a_view/2499094 Answer to I am trying to take a 15vdc (max) signal and reduce it to be +-10vdc signal. Is this possible and how would i go about doing it? http://www.answerbag.com/a_view/2499074 I am trying to take a 15vdc (max) signal and reduce it to be +-10vdc signal. Is this possible and how would i go about doing it?<br /><br />You could get +10V easily, using a 10V voltage regulator, such as a Fairchild LM7810 (Datasheet http://www.fairchildsemi.com/ds/LM/LM7810.pdf). Don&#039;t know how you would get -10V though. I don&#039;t think it&#039;s possible, given a +15V input. Sat, 15 Mar 2008 14:49:22 -0700 http://www.answerbag.com/a_view/2499074 Answer to A ballast tank 15.25m long, 10.5m wide and 1.5m deep and the tank is filled with fresh water. Calculate the head of water if the load on the short side is 197 Tonnes http://www.answerbag.com/a_view/2499046 A ballast tank 15.25m long, 10.5m wide and 1.5m deep and the tank is filled with fresh water. Calculate the head of water if the load on the short side is 197 Tonnes<br /><br />This isn&#039;t homework help. You won&#039;t learn anything if you don&#039;t do it yourself. Sat, 15 Mar 2008 14:43:02 -0700 http://www.answerbag.com/a_view/2499046 Answer to When is Starcraft 2 coming out? http://www.answerbag.com/a_view/934433 When is Starcraft 2 coming out?<br /><br />Not soon enough!!!! Sun, 03 Jun 2007 13:34:50 -0700 http://www.answerbag.com/a_view/934433 Answer to Why dont they have body armor for your legs or shoulders or arms or anything? http://www.answerbag.com/a_view/934349 Why dont they have body armor for your legs or shoulders or arms or anything?<br /><br />I agree with OldSchool. It&#039;s all about compromise. Remember the saying that the best defence is a good offense. Although not to be taken very literally, it is still somewhat true. Yes, soldiers need to be protected by armour. However, even the thickest armour can be penetrated. Shooting the... Sun, 03 Jun 2007 13:01:25 -0700 http://www.answerbag.com/a_view/934349 Answer to Where is the worlds longest covered bridge? http://www.answerbag.com/a_view/934340 Where is the worlds longest covered bridge?<br /><br />It&#039;s in Canada, where I live :) Sun, 03 Jun 2007 12:56:46 -0700 http://www.answerbag.com/a_view/934340 Answer to My soda and beer can come in plastic or glass bottles or cans. At the register I can put those in paper or plastic bags. In terms of recycling and manufacturing which choice is the least bad for the environment? http://www.answerbag.com/a_view/934338 My soda and beer can come in plastic or glass bottles or cans. At the register I can put those in paper or plastic bags. In terms of recycling and manufacturing which choice is the least bad for the environment?<br /><br />I believe plastics are easier to recycle because most do not require as high a temperature (but I guess this depends on the type of plastic). Sun, 03 Jun 2007 12:53:31 -0700 http://www.answerbag.com/a_view/934338 Answer to Where could one find small capacitors to build a small demonstrational railgun? http://www.answerbag.com/a_view/934325 Where could one find small capacitors to build a small demonstrational railgun?<br /><br />Many small electronics parts stores exist. The Internet or Yellow Pages is your best resource for finding one. Sun, 03 Jun 2007 12:47:47 -0700 http://www.answerbag.com/a_view/934325 Answer to Can I use a window air conditioner indoors without utilizing the window set-up? If not, why not? http://www.answerbag.com/a_view/934320 Can I use a window air conditioner indoors without utilizing the window set-up? If not, why not?<br /><br />Additionally, AC&#039;s are not 100% efficient. Thus, putting such an AC indoors would actually heat it up. Sun, 03 Jun 2007 12:46:30 -0700 http://www.answerbag.com/a_view/934320 Answer to Hypothetically, could a "Federation Cube" be built and if so how useful would it be? http://www.answerbag.com/a_view/564245 Hypothetically, could a "Federation Cube" be built and if so how useful would it be?<br /><br />The Borg have an assimilator cube because it is their job to assimilate other planets. They need the large firepower of a Cube. The Federation is aimed at peace, and so having a Federation Cube would contradict their morals. Thu, 22 Mar 2007 18:48:27 -0700 http://www.answerbag.com/a_view/564245 Answer to Would sick bay become obsolete with the use of the transporter technology? http://www.answerbag.com/a_view/564238 Would sick bay become obsolete with the use of the transporter technology?<br /><br />No. The problem with transporters is that they have a maximum range of 40,000km. On long journeys, there may not be a hospital within that range. Thus, sick bay is always a necessity. Thu, 22 Mar 2007 18:45:58 -0700 http://www.answerbag.com/a_view/564238 Answer to What technology from Star Trek (any one) would you like to have? http://www.answerbag.com/a_view/564196 What technology from Star Trek (any one) would you like to have?<br /><br />If people could make a miniature version of the impulse drive, this would revolutionalize travel and benefit everyone. Thu, 22 Mar 2007 18:38:26 -0700 http://www.answerbag.com/a_view/564196 Answer to I'm building a model cable bridge for a tournament - will braiding dental floss to make cables make it stronger then just twisting the floss strands together? http://www.answerbag.com/a_view/532448 I'm building a model cable bridge for a tournament - will braiding dental floss to make cables make it stronger then just twisting the floss strands together?<br /><br />I suggest just twisting. With dental floss, whether you braid or simply twist will not make any difference at all in terms of performance. The twisting of the floss will not produce any torsion effects as suggested by qualhiveldorf (current cable stayed bridged use twisted cables). Also, braiding... Sat, 17 Mar 2007 10:28:09 -0700 http://www.answerbag.com/a_view/532448 Answer to What is reverse engineering? http://www.answerbag.com/a_view/509234 What is reverse engineering?<br /><br />Reverse engineering is where you take the finished product, and try to come up with the criteria that the designer was using. Mon, 12 Mar 2007 18:15:16 -0700 http://www.answerbag.com/a_view/509234 Answer to Are the robots in "Star Wars" impractical? http://www.answerbag.com/a_view/509216 Are the robots in "Star Wars" impractical?<br /><br />Which robots are you referring to--the ones that kill people, or the ones that serve people? Mon, 12 Mar 2007 18:12:07 -0700 http://www.answerbag.com/a_view/509216 Answer to What is 0 to the power of 0? http://www.answerbag.com/a_view/482630 What is 0 to the power of 0?<br /><br />0^0 is defined as 1. Wed, 07 Mar 2007 19:25:34 -0800 http://www.answerbag.com/a_view/482630 Answer to What's the difference between an engine and a motor? http://www.answerbag.com/a_view/482607 What's the difference between an engine and a motor?<br /><br />If you look at definitions, there is actually no difference. However, most people associate an engine with something that produces power within, while a motor is something that requires outside energy such as electricity. Wed, 07 Mar 2007 19:21:57 -0800 http://www.answerbag.com/a_view/482607 Answer to Do you know how to figure out how much energy per square foot a house will use? http://www.answerbag.com/a_view/465142 Do you know how to figure out how much energy per square foot a house will use?<br /><br />find out how much electricity and/or natural gas you use. convert that into Watts, and divide by the area of your house. By area, I&#039;m also talking about the total area of the floors. Sun, 04 Mar 2007 15:04:37 -0800 http://www.answerbag.com/a_view/465142 Answer to I wiggle the bass volume button and bass pops in and out http://www.answerbag.com/a_view/465127 I wiggle the bass volume button and bass pops in and out<br /><br />I had the same problem with my volume control. The problem I had was a loose connection/broken potentiometer connected to the knob. What i did was just open up my speakers, remove the potentiometer, buy a new one, and solder it in. My speakers now work fine. Sun, 04 Mar 2007 15:01:30 -0800 http://www.answerbag.com/a_view/465127 Answer to My speakers bass cuts in and out what can i do http://www.answerbag.com/a_view/465111 My speakers bass cuts in and out what can i do<br /><br />There is likely a loose connection somewhere in the wiring/soldering. If they are cheap speaker&#039;s, I&#039;d just open them up and find out where the loose connection is using a multimeter. Otherwise, you can always find a repair shop. Sun, 04 Mar 2007 14:58:59 -0800 http://www.answerbag.com/a_view/465111 Answer to What 9 letter word/s contain these letters rnl fod euw? {note: must contain all these letters ONCE and no other letters} http://www.answerbag.com/a_view/465096 What 9 letter word/s contain these letters rnl fod euw? {note: must contain all these letters ONCE and no other letters}<br /><br />wonderful Sun, 04 Mar 2007 14:55:46 -0800 http://www.answerbag.com/a_view/465096 Answer to Have you ever been to New York? http://www.answerbag.com/a_view/465073 Have you ever been to New York?<br /><br />Yes, on a grad trip. It was awesome. Sun, 04 Mar 2007 14:51:55 -0800 http://www.answerbag.com/a_view/465073 Answer to What safety measures are in place to prevent elevator cars from falling down their shafts? http://www.answerbag.com/a_view/461945 What safety measures are in place to prevent elevator cars from falling down their shafts?<br /><br />I believe elevators also have a backup cable. Sat, 03 Mar 2007 18:40:05 -0800 http://www.answerbag.com/a_view/461945 Answer to If the entrance door to a golf dome where to break, would the bubble collapse because of the pressure difference? http://www.answerbag.com/a_view/461907 If the entrance door to a golf dome where to break, would the bubble collapse because of the pressure difference?<br /><br />I agree with ImAlec&#039;s point about the dome not collapsing. However, I disagree with his statement that the pressure difference is low. The pressure holding the up the dome is actually quite large--consider the weight of the huge dome. It is so large, in fact, that door frames to the dome... Sat, 03 Mar 2007 18:29:05 -0800 http://www.answerbag.com/a_view/461907 Answer to What/Which is the biggest satellite in space? http://www.answerbag.com/a_view/461886 What/Which is the biggest satellite in space?<br /><br />If you are talking about a man-made satellite, it would be the international space station. Sat, 03 Mar 2007 18:22:07 -0800 http://www.answerbag.com/a_view/461886 Answer to If a tunnel was dug through the middle of the Earth from top to bottom and a person was to jump in the hole what would happen to that person? http://www.answerbag.com/a_view/461882 If a tunnel was dug through the middle of the Earth from top to bottom and a person was to jump in the hole what would happen to that person?<br /><br />There is one interesting fact about this proposition. The time of the trip from one end of the tunnel to the other end is the same, no matter where the two ends of the tunner are located on the earth&#039;s surface. If one end was on the equator, and the other end was at the north pole, the... Sat, 03 Mar 2007 18:20:19 -0800 http://www.answerbag.com/a_view/461882 Answer to Why is the destruction of an old building or structure referred to as an "implosion"? It is clearly not an implosion, but a series of syncronized explosions. http://www.answerbag.com/a_view/461856 Why is the destruction of an old building or structure referred to as an "implosion"? It is clearly not an implosion, but a series of syncronized explosions.<br /><br />The explosives are set such that the walls of the building fall inward. Thus, it looks like the building is imploding. Sat, 03 Mar 2007 18:08:50 -0800 http://www.answerbag.com/a_view/461856 Answer to Why can't humans drill to the center of the Earth? http://www.answerbag.com/a_view/461849 Why can't humans drill to the center of the Earth?<br /><br />In case you are thinking of the movie &quot;The Core&quot;, we are nowhere near that level of technology. Those &quot;inventions&quot; that the movie showed are fiction. Sat, 03 Mar 2007 18:06:46 -0800 http://www.answerbag.com/a_view/461849 Answer to Is it possible to generate electricity using the heat produced in an automobile? http://www.answerbag.com/a_view/461840 Is it possible to generate electricity using the heat produced in an automobile?<br /><br />In fact, it is already done in the new electric and hybrid cars. Some have &quot;regenerative braking.&quot; A lot of heat is created when you apply the brakes. Instead of letting that head dissipate, the heat is converted into electricity and stored back in the battery. Sat, 03 Mar 2007 18:03:51 -0800 http://www.answerbag.com/a_view/461840 Answer to Why are there laws in various cities limiting the height of new skyscrapers? http://www.answerbag.com/a_view/461831 Why are there laws in various cities limiting the height of new skyscrapers?<br /><br />In Manhattan, New York, there is what is known as &quot;air space&quot;. That is, there are all kinds of regulations about how high the buildings can go. The reason for this is that city planners don&#039;t want massive buildings blocking out all the sunlight. Air space can also be transferred.... Sat, 03 Mar 2007 18:00:41 -0800 http://www.answerbag.com/a_view/461831 Answer to Are you bothered by people who use umm, uhh, ok, like, yea, and other such phrases often in their speech? http://www.answerbag.com/a_view/453811 Are you bothered by people who use umm, uhh, ok, like, yea, and other such phrases often in their speech?<br /><br />Yes. Once, I had a prof which used OK on average five times a minute. It was EXTREMELY annoying. Every time she said OK I&#039;d look up. Thu, 01 Mar 2007 18:13:05 -0800 http://www.answerbag.com/a_view/453811 Answer to Why does an airplane wing get less lift in hot weather? (Also, is this an accurate assertion?) http://www.answerbag.com/a_view/447476 Why does an airplane wing get less lift in hot weather? (Also, is this an accurate assertion?)<br /><br />abercrombe: &quot;I remember once learning that lift results from the pressure differential induced by the shape of the wing.&quot; This is only half of the story. This is what is taught in all schools, but it does NOT explain how a wing works. In fact, I believe that this theory alone would... Tue, 27 Feb 2007 19:12:39 -0800 http://www.answerbag.com/a_view/447476 Answer to Is it possible to build bridges and other structures out of composite materials. (like plastic?) http://www.answerbag.com/a_view/447453 Is it possible to build bridges and other structures out of composite materials. (like plastic?)<br /><br />To add to the other great answers: Some materials behave very differently under compression compared to under tension. The easiest example is concrete. It is excellent under compression, which is why it is used in the towers of a suspension bridge, but it is terrible in tension, which is why it... Tue, 27 Feb 2007 19:07:38 -0800 http://www.answerbag.com/a_view/447453 Answer to How many buildings are now taller than the once tallest structure in the world, Empire State Building? http://www.answerbag.com/a_view/447429 How many buildings are now taller than the once tallest structure in the world, Empire State Building?<br /><br />The CN Tower in Toronto, Canada is the tallest structure in the world. Whether it is a building or not is debatable. Tue, 27 Feb 2007 19:02:44 -0800 http://www.answerbag.com/a_view/447429 Answer to What are the grooves (not breaks) every few feet in sidewalks? http://www.answerbag.com/a_view/447422 What are the grooves (not breaks) every few feet in sidewalks?<br /><br />To add to retroglide: In the summer, concrete expands. In the winter, it shrinks. To prevent the sidewalk from cracking, the grooves--actually spaces between tiles--are left there on purpose, to allow the sidewalk to expand or contract. Tue, 27 Feb 2007 19:01:25 -0800 http://www.answerbag.com/a_view/447422 Answer to What material has the best strength to weight ratio? http://www.answerbag.com/a_view/447415 What material has the best strength to weight ratio?<br /><br />The problem with your question is that you need to define &quot;strength&quot;. There are a lot of different ways to measure &quot;strength&quot;. Ie what quirkie suggested. Other ways are: -how long can you stretch it before it breaks -how much weight you can put on it before it stretches a... Tue, 27 Feb 2007 18:59:08 -0800 http://www.answerbag.com/a_view/447415 Answer to Does the shape and mass of the magnet play a major role when creating an electromagnetic field? http://www.answerbag.com/a_view/447382 Does the shape and mass of the magnet play a major role when creating an electromagnetic field?<br /><br />To add to ChaiCustard: The *magnetic* field created mostly depends on the type of magnets. Your average fridge magnet it very weak, compared to the really strong rare-earth magnets. If you have the same type of magnet, then obviously the larger it is, the larger of a field it creates. In case... Tue, 27 Feb 2007 18:52:05 -0800 http://www.answerbag.com/a_view/447382 Answer to Can nitrogen, contained in a cylinder be considered an ideal gas at -143 celcius and 42 atm pressure? http://www.answerbag.com/a_view/447314 Can nitrogen, contained in a cylinder be considered an ideal gas at -143 celcius and 42 atm pressure?<br /><br />NO! In fact, it is the exact opposite of what could be considered an ideal gas. The ideal gas approximation is best used on &quot;hot vacuums&quot;. High temperature and low pressure. You have very low temperature and very high pressure. The ideal gas approximation will be nowhere near the real... Tue, 27 Feb 2007 18:35:55 -0800 http://www.answerbag.com/a_view/447314 Answer to Could commercial airplanes such as the Boeing 747 or A380 refuel in midair? http://www.answerbag.com/a_view/447297 Could commercial airplanes such as the Boeing 747 or A380 refuel in midair?<br /><br />They could, but there are several problems: 1. They need an aerial refuelling system 2. It is expensive (now you need a tanker as well, which requires its own fuel, maintenance costs, crew, etc) 3. Many large airplanes fly overseas. This means the tanker would have to follow the 747 all the... Tue, 27 Feb 2007 18:32:05 -0800 http://www.answerbag.com/a_view/447297 Answer to How does the angled wingtips of the Boeing 747 increase its range by 3%? http://www.answerbag.com/a_view/447281 How does the angled wingtips of the Boeing 747 increase its range by 3%?<br /><br />It creates additional lift, without the drag effects of a longer wingspan. For a much more detailed version, see Wikipedia. I&#039;m not going to copy the whole article here. http://en.wikipedia.org/wiki/Wingtip_device Tue, 27 Feb 2007 18:28:19 -0800 http://www.answerbag.com/a_view/447281 Answer to If Socrates was still walking around town and harassing people, would you talk to him? http://www.answerbag.com/a_view/447253 If Socrates was still walking around town and harassing people, would you talk to him?<br /><br />I have a Socrates joke: In ancient Greece (469 - 399 BC), Socrates was well known for his wisdom. One day the great philosopher came upon an acquaintance who said excitedly, &quot;Socrates, do you know what I just heard about one of our students?&quot; &quot;Wait a moment,&quot; Socrates... Tue, 27 Feb 2007 18:23:41 -0800 http://www.answerbag.com/a_view/447253 Answer to It is 100% official: Iraq had nothing to do with the 9/11 attacks. But, a lot of people, some polls say almost 30% believe that there is a connection between 9/11 and Iraq. Is that the product of successful Government propaganda or just plain ignorance? http://www.answerbag.com/a_view/447231 It is 100% official: Iraq had nothing to do with the 9/11 attacks. But, a lot of people, some polls say almost 30% believe that there is a connection between 9/11 and Iraq. Is that the product of successful Government propaganda or just plain ignorance?<br /><br />It&#039;s because the war in Iraq recieves so much more media attention than the war in Afghanistan. Some people think that Iraq and 9/11 are connected. Tue, 27 Feb 2007 18:19:29 -0800 http://www.answerbag.com/a_view/447231 Answer to My computer has a ms/sd/mmc card reader and when i put my card in it, it does't work my brother has disconnect it. Can somebody tell me how to reinstall it? http://www.answerbag.com/a_view/443439 My computer has a ms/sd/mmc card reader and when i put my card in it, it does't work my brother has disconnect it. Can somebody tell me how to reinstall it?<br /><br />right click the &quot;my computer&quot; icon and select &quot;manage&quot;. in the tree, select &quot;device manager&quot;. In my computer it says &quot;Secure Digital host controllers&quot;. Yours is probably something similar. If it is disabled (there is an &quot;X&quot; through the icon) then... Mon, 26 Feb 2007 19:10:03 -0800 http://www.answerbag.com/a_view/443439 Answer to How do you take a question you've asked down once you're satisfied with the answers you've received? http://www.answerbag.com/a_view/443403 How do you take a question you've asked down once you're satisfied with the answers you've received?<br /><br />why would you do that? leave the answers up so other people can learn from the answers as well, or so that other people don&#039;t have to ask the same question again. Mon, 26 Feb 2007 19:02:42 -0800 http://www.answerbag.com/a_view/443403 Answer to What words would you use if you wanted to sound smart? http://www.answerbag.com/a_view/443390 What words would you use if you wanted to sound smart?<br /><br />I&#039;d rather be smart than sound smart. A smart person is someone who can explain complicated ideas using simple language. Mon, 26 Feb 2007 18:59:46 -0800 http://www.answerbag.com/a_view/443390 Answer to I need some serious help getting to sleep I have tried many times now and Its 6:30 am I need advice? http://www.answerbag.com/a_view/443378 I need some serious help getting to sleep I have tried many times now and Its 6:30 am I need advice?<br /><br />Is this a habit that you sleep really late and wake up really late? If so, then its simply a matter of sleeping earlier. Mon, 26 Feb 2007 18:55:57 -0800 http://www.answerbag.com/a_view/443378 Answer to Uncle Bob carved the word "IRONY" into a block of ferrous metal. Is that ironic or just amusing? http://www.answerbag.com/a_view/443371 Uncle Bob carved the word "IRONY" into a block of ferrous metal. Is that ironic or just amusing?<br /><br />Ha ha ha. I just saw an episode of Black Adder (with Rowan Atkinson aka Mr. Bean). In it, Rowan Atkinson asks his idiot sidekick Baldrick &quot;Do you know what irony is.&quot; And Baldrick responded, &quot;Yea, its like goldy and bronzy, but made of iron.&quot; Mon, 26 Feb 2007 18:54:23 -0800 http://www.answerbag.com/a_view/443371 Answer to Do you think anyone will ever get to level 100? What would it be called? http://www.answerbag.com/a_view/443357 Do you think anyone will ever get to level 100? What would it be called?<br /><br />Impossible. Mon, 26 Feb 2007 18:49:23 -0800 http://www.answerbag.com/a_view/443357 Answer to If a camera flash is essentially a capacitor, how is it able to discharge so quickly, when it takes so long to charge? Aren't the charge and discharge transients symmetrical? http://www.answerbag.com/a_view/443348 If a camera flash is essentially a capacitor, how is it able to discharge so quickly, when it takes so long to charge? Aren't the charge and discharge transients symmetrical?<br /><br />My friend said that it is due to the internal resistance of the battery, which causes the battery to have a maximum output current. This makes sense, but if that were the answer, then battery manufacturers would be marketing their batteries by max current output: &quot;Will charge your flash... Mon, 26 Feb 2007 18:45:20 -0800 http://www.answerbag.com/a_view/443348 Answer to If it were possible to take ALL weapons out of existence, would you? http://www.answerbag.com/a_view/392593 If it were possible to take ALL weapons out of existence, would you?<br /><br />define weapon Wed, 14 Feb 2007 15:47:39 -0800 http://www.answerbag.com/a_view/392593 Answer to Does the US Air Force still fly the Valkyrie jet? http://www.answerbag.com/a_view/388609 Does the US Air Force still fly the Valkyrie jet?<br /><br />I must say, the XB 70 is the nicest looking airplane ever! Tue, 13 Feb 2007 18:11:23 -0800 http://www.answerbag.com/a_view/388609 Answer to Since the F-14 Tomcat is retired, would the F-18 Hornet or Super Hornet be sufficient enough to take over its job at the Naval Fighter Weapons School aka TOP GUN? http://www.answerbag.com/a_view/388597 Since the F-14 Tomcat is retired, would the F-18 Hornet or Super Hornet be sufficient enough to take over its job at the Naval Fighter Weapons School aka TOP GUN?<br /><br />Yes. The F18 Hornet and Super Hornet were actually designed to replace the aging Tomcats, mostly on aircraft carriers. Tue, 13 Feb 2007 18:08:10 -0800 http://www.answerbag.com/a_view/388597 Answer to Is it considered dangerous to catch the 1st wire (closest to the rear of the ship) when landing on an aircraft carrier? Do the LSOs give you a bad grade for that? http://www.answerbag.com/a_view/388590 Is it considered dangerous to catch the 1st wire (closest to the rear of the ship) when landing on an aircraft carrier? Do the LSOs give you a bad grade for that?<br /><br />From Wikipedia: There are four parallel arresting wires, spaced about 50 feet (15 meters) apart, to expand the target area for the pilot. Pilots are aiming for the third wire, as it&#039;s the safest and most effective target. They never shoot for the first wire because it&#039;s dangerously... Tue, 13 Feb 2007 18:06:30 -0800 http://www.answerbag.com/a_view/388590 Answer to What is your favorite fighter aircraft? http://www.answerbag.com/a_view/388549 What is your favorite fighter aircraft?<br /><br />I must say its the tried and true F15 eagle. However, everyone should check out the XB-70 Valkyrie bomber. Probably faster than any fighter aircraft available (its rated for mach 3), and its just beautiful. Tue, 13 Feb 2007 17:58:03 -0800 http://www.answerbag.com/a_view/388549 Answer to When you by tuna from a can,is it already cooked? http://www.answerbag.com/a_view/341077 When you by tuna from a can,is it already cooked?<br /><br />I hope so, because I eat it straight out of the can! Wed, 31 Jan 2007 17:04:13 -0800 http://www.answerbag.com/a_view/341077 Answer to In an electric power grid, what happens to unused current? http://www.answerbag.com/a_view/341068 In an electric power grid, what happens to unused current?<br /><br />To expand on the other excellent answers. Consider Ohm&#039;s law: V=IR where: V=voltage I=current R=resistance The power station provides a constant voltage (120 V in North America). All the appliances and devices plugged into a socket make up the combined resistance (R). The current (I)... Wed, 31 Jan 2007 17:00:51 -0800 http://www.answerbag.com/a_view/341068 Answer to Why do musicians have crappy stereos and auto mechanics drive clunker cars? http://www.answerbag.com/a_view/336573 Why do musicians have crappy stereos and auto mechanics drive clunker cars?<br /><br />because musicians make better music than the stereo and auto mechanics know how to keep clunker cars working. Tue, 30 Jan 2007 17:49:49 -0800 http://www.answerbag.com/a_view/336573 Answer to If you don't have a date for the prom, and no close frineds to go with, is it still worth the risk to go alone, or will you most likely be stuck having a miserable lonely night? http://www.answerbag.com/a_view/336560 If you don't have a date for the prom, and no close frineds to go with, is it still worth the risk to go alone, or will you most likely be stuck having a miserable lonely night?<br /><br />if you have no good friends to go with, then other people will probably make you miserable by asking you countless times why you are there alone. Tue, 30 Jan 2007 17:47:33 -0800 http://www.answerbag.com/a_view/336560 Answer to How long has answer bag been around? http://www.answerbag.com/a_view/336550 How long has answer bag been around?<br /><br />it was founded in July 2003 by Joel Downs source: answers.com Tue, 30 Jan 2007 17:45:33 -0800 http://www.answerbag.com/a_view/336550 Answer to Why do American families arrange their furniture around their TV? http://www.answerbag.com/a_view/336538 Why do American families arrange their furniture around their TV?<br /><br />there&#039;s nothing else to arrange furniture around. Tue, 30 Jan 2007 17:43:19 -0800 http://www.answerbag.com/a_view/336538 Answer to White round scored pill. In the quadrants are the letters Z Q O 2. It is about 1/4" in diameter. What is this pill? http://www.answerbag.com/a_view/336533 White round scored pill. In the quadrants are the letters Z Q O 2. It is about 1/4" in diameter. What is this pill?<br /><br />fertilizer? Tue, 30 Jan 2007 17:42:13 -0800 http://www.answerbag.com/a_view/336533 Answer to How do you build a house of cards? http://www.answerbag.com/a_view/331437 How do you build a house of cards?<br /><br />with lots of patience Mon, 29 Jan 2007 15:19:26 -0800 http://www.answerbag.com/a_view/331437 Answer to Do you sleep with open mouth? http://www.answerbag.com/a_view/303967 Do you sleep with open mouth?<br /><br />yes of course Mon, 22 Jan 2007 17:01:19 -0800 http://www.answerbag.com/a_view/303967 Answer to What country are you from? http://www.answerbag.com/a_view/303964 What country are you from?<br /><br />canada Mon, 22 Jan 2007 17:00:53 -0800 http://www.answerbag.com/a_view/303964 Answer to Is humility a thing of the past? http://www.answerbag.com/a_view/271744 Is humility a thing of the past?<br /><br />Humility? What&#039;s that? Sun, 14 Jan 2007 07:29:21 -0800 http://www.answerbag.com/a_view/271744 Answer to Where are you from? http://www.answerbag.com/a_view/271742 Where are you from?<br /><br />Canada....I know it&#039;s cold! Sun, 14 Jan 2007 07:28:27 -0800 http://www.answerbag.com/a_view/271742 Answer to On the weekends after you wake up do you linger in bed or jump right up and start the day? http://www.answerbag.com/a_view/271740 On the weekends after you wake up do you linger in bed or jump right up and start the day?<br /><br />Definitely linger in bed, for as long as I can. Until my mom makes me get up. LOL. Sun, 14 Jan 2007 07:27:46 -0800 http://www.answerbag.com/a_view/271740 Answer to How can you know if somebody is hacking in Counter-strike? http://www.answerbag.com/a_view/269183 How can you know if somebody is hacking in Counter-strike?<br /><br />If one person is getting really easy shots (ie shooting through walls) Sat, 13 Jan 2007 14:15:06 -0800 http://www.answerbag.com/a_view/269183 Answer to What are some tips or strategies that would be useful to a beginner? http://www.answerbag.com/a_view/269175 What are some tips or strategies that would be useful to a beginner?<br /><br />There are many CS guides available on the internet. I suggest you read one of them. Here is a summary: 1: learn to burst fire (hold down fire for no more than 1 second at a time) unless the enemy is close 2: learn to strafe while firing 3: learn the guns and the equipment 4: learn the map 5:... Sat, 13 Jan 2007 14:13:44 -0800 http://www.answerbag.com/a_view/269175 Answer to Can I play Halo on a PC with an Ati Radeon 9250 256 MB graphics card? http://www.answerbag.com/a_view/269154 Can I play Halo on a PC with an Ati Radeon 9250 256 MB graphics card?<br /><br />You can play Halo with any graphics card (ie my laptop has an Intel GMA, and it works fine). An ATI Radeon is more than enough, unless your standards are very high. More important would be your processor speed and memory. Sat, 13 Jan 2007 14:07:38 -0800 http://www.answerbag.com/a_view/269154 Answer to SWEARING....Do you agree with it? Why? http://www.answerbag.com/a_view/269120 SWEARING....Do you agree with it? Why?<br /><br />As long as its used appropriately, and only rarely. Sat, 13 Jan 2007 13:58:13 -0800 http://www.answerbag.com/a_view/269120 Answer to Why did they film episodes 4, 5 and 6 before episodes 1, 2, and 3? http://www.answerbag.com/a_view/269092 Why did they film episodes 4, 5 and 6 before episodes 1, 2, and 3?<br /><br />One of the reasons was that episodes 4, 5, and 6 had easier scenes to film. Most importantly, they had less CGI scenes. This was important because CGI was not that advanced when they were doing 4, 5, and 6. When CGI became way better, they were able to make episodes 1, 2, and 3. One example of... Sat, 13 Jan 2007 13:53:32 -0800 http://www.answerbag.com/a_view/269092 Answer to What made you decide to answer this question? http://www.answerbag.com/a_view/268773 What made you decide to answer this question?<br /><br />I didn&#039;t have to think too hard. Sat, 13 Jan 2007 12:43:54 -0800 http://www.answerbag.com/a_view/268773 Answer to How long's a piece of string? http://www.answerbag.com/a_view/268756 How long's a piece of string?<br /><br />Never long enough. Sat, 13 Jan 2007 12:40:51 -0800 http://www.answerbag.com/a_view/268756 Answer to What was the first video game system you ever played? What game did you play on it? http://www.answerbag.com/a_view/268751 What was the first video game system you ever played? What game did you play on it?<br /><br />N64. Super smash bros. Sat, 13 Jan 2007 12:39:45 -0800 http://www.answerbag.com/a_view/268751 Answer to What country are you from? http://www.answerbag.com/a_view/268736 What country are you from?<br /><br />Canada. Yay, first one! Sat, 13 Jan 2007 12:37:12 -0800 http://www.answerbag.com/a_view/268736 Answer to If you were a Star Wars Character, who would you be? http://www.answerbag.com/a_view/268722 If you were a Star Wars Character, who would you be?<br /><br />Chewbacca&#039;s cool too. Sat, 13 Jan 2007 12:34:06 -0800 http://www.answerbag.com/a_view/268722 Answer to If you were a Star Wars Character, who would you be? http://www.answerbag.com/a_view/268706 If you were a Star Wars Character, who would you be?<br /><br />Yoda!!! Sat, 13 Jan 2007 12:31:37 -0800 http://www.answerbag.com/a_view/268706 Answer to Can you define "between" without using that word? http://www.answerbag.com/a_view/268700 Can you define "between" without using that word?<br /><br />what 2 is to 1 and 3 Sat, 13 Jan 2007 12:29:58 -0800 http://www.answerbag.com/a_view/268700 Answer to What are some good schools for Chemical or Nuclear Engineering in or near the State of Pennsylvania? http://www.answerbag.com/a_view/268186 What are some good schools for Chemical or Nuclear Engineering in or near the State of Pennsylvania?<br /><br />Penn State? Sat, 13 Jan 2007 09:10:05 -0800 http://www.answerbag.com/a_view/268186 Answer to What sort of things would you do to amuse yourself during a car journey? http://www.answerbag.com/a_view/268090 What sort of things would you do to amuse yourself during a car journey?<br /><br />Watch movies on a laptop. Sat, 13 Jan 2007 08:34:05 -0800 http://www.answerbag.com/a_view/268090 Answer to Are the dancing bears in the Charmin toilet paper animated or real? http://www.answerbag.com/a_view/267996 Are the dancing bears in the Charmin toilet paper animated or real?<br /><br />ROFL. I hope they&#039;re animated. I think the TV crew hopes they&#039;re animated as well. Sat, 13 Jan 2007 07:41:53 -0800 http://www.answerbag.com/a_view/267996