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What is the best way to find the centre of a circle, using only the simplest tools? Draw a tangent to the circle(you can do it by a scale, a pencil and simple observation) at any point on it. Draw a normal to this tangent. The normal to any tangent of a circle passes through the centre of the circle. So it is the diameter and it's centre gives the centre of the circle

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Who is the smartest man on earth? Yes, Stephen Hawking is the smartest person on the planet. He was effected by ALS(amyotrophic lateral sclerosis) at the age of 20. The disease confined him to a wheel chair and forced him to use a computer generated voice synthesizer. He still continued his research and provided the mathematical support for the big bang theory. He is regarded as living Einstein, but he is undoubtedly a...

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How do you create a website? Does it cost money? http://www.buildfree.org/ gives you information about the websites where you can build your website for free.In http://www.bravenet.com/ ,you can build your own website for free.You have to chose a name for your website.(If you chose user,your website address will be user.bravenet.com).Similarly in http://geocities.yahoo.com/ you can build two websites with a single yahoo id(for example...

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If the square root of -1 is i, then what is the square root of -2? Square root of the product of two numbers a and b is equal to the product of the square roots of the numbers provided atleast one of the numbers is a positive real number. Since -2 can be written as the product of 2 and -1 where 2 is a positive real number, the square root of -2 is the square root of 2 multiplied by the square root of -1. Hence the square root of -2 is twice the value of i. In...

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Negating the impracticality of the scenario, what would happen if an unstoppable force collided with an immovable object? The force would reverse it's direction without changing it's magnitude and the immovable object remains as it is. Thom64:Okay, I'll compare it with a light ray. When a light ray is incident on a perfectly reflecting surface, it reflects itself without changing it's magnitude(of velocity). It may not be a force, but it is a good example that there are some things in this...

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Which religion is "right"? If the question is about the moral teachings of a prophet or a religion,all religions are right. But here I speak about the religions as taught by those prophets,but not the religions that have been manipulated for centuries. If the question about God, no religion is right,because as I wrote before, even the teachings of the prophets about God are manipulated by humans.

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How fast was the fastest recorded serve? The fastest serve in tennis is 155 mph by American player Andy Roddick against Vladimir Voltchkov of Belarus in a Davis Cup semifinal match(9-24-2004,Charleston,SC,USA).

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How do rainbows form? The formation of a rainbow is based on the phenomenon of dispersion of light. When white light passes through a prism,it gets dispersed into seven colours (Violet, Indigo, Blue, Green, Yellow, Orange, Red). In the case of a rainbow,the sun light is the light ray,the rain drop acts as a prism (May not be geometrically a prism,but causes a change in the medium) and the sky acts as screen. So...

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The bowler bowls a ball which directly goes above the batsman's waist without a bounce, but hits the stump. Would the batsman be given out? Or should it be called a no-ball and hence not out? Yes the batsman will be declared as out.

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Is there a god, and either way, how do we know? You can find Him in yourself. You can become God. God is a MAN with great character and helping nature along with courage. He should be unselfish. EDIT: I answered this long ago when I was a ignorant about HIM. I have different ideas now.

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What is meant by "absolute zero"? Has it ever been this cold? As the temperature decreases, the pressure of a gas also decreases. When a graph is drawn with temperature in celcius scale on x-axis and pressure of the gas on y-axis,it will be a straight line which when extended touches the temperature axis at -273.16 celcius which is called ABSOLUTE TEMPERATURE. Here,the graph is drawn for limited number of temperatures and extended to give the absolute...

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Do men have feelings? If you think that expressing feelings means weeping in front of others,men don't have feelings.If you think that feelings are emotions,yes we do have feelings.But we don't express them.

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What is calculus useful for? Calculus is the controversial concept provided by Newton way back in 17th century.It has unlimited number of uses.If you once look at physics you will find many uses of calculus in deriving expressions and formulas. It is also used in finding the areas of curves and volumes and areas of surfaces.

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What is centrifugal force? Centrifugal force is a pseudo force.A pseudo force is an imaginary force which we can just experience but cannot caliculate directly.So centrifugal force is an imaginary force acting on a body in circular or rotatory motion which drives that body away from its circular path.

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Absolute zero (-273 degrees Celsius) is the lower limit on temperature. Is there an upper limit? Absolute zero is the temperature where the pressure of a gas becomes zero (minimum), so it is the lower limit. As there is no maximum limit of the pressure, there is no upper limit for temperature.

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What is 0 to the power of 0? Anything to the power of zero is 1 and zero to the power of anything is zero. As 0 to the power of zero takes both of these cases it is not mathematically defined

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