4 items are filed under this topic.
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e = m c^2 |
2009-12-09 |
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From Jim:
Please explain the following formula:
E=MC2 (squared)
Answered by Robert Dawson. |
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How far from Earth is Neptune? |
2006-03-21 |
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From Scott:
A laser beam travelling at the speed of light bounces off the planet Neptune and returns to Earth in 29 960.72 s. The speed of light is 299 792.5 km/s. How far from Earth is Neptune?
Answered by Penny. |
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Accelerating to the speed of light |
2004-09-30 |
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From Lars:
How long time would it take to accelerate up to the speed of light with an acceleration speed similar to 0-100 seconds in 5 seconds?
Answered by Penny Nom. |
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The speed of light |
2000-06-19 |
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From Benny Lau:
I have a personal questions. In physics,if a person is running on a train, his relative speed on the ground will be the addition of the speed of train and the person. If u have a train inside another train and inside another train, so on...... can u reach the speed of light? It would need a very long distance. But if we make all the train travel in circles. Then we don't need that much distance. So can we achieve the speed of Light?
Answered by Robert Coleman and Harley Weston. |
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