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# quiz1 - Physics 2D Spring 2010 Quiz#1 Theory of Special...

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Physics 2D — Spring 2010 Quiz #1: Theory of Special Relativity Friday April 9 11:00am to 11:50am [Note: This is a closed-book exam. No additional note is allowed. The total score of this exam is 50 points. Points assigned to each problem is thus a guide to how much time you should spend working on it.] Possibly useful formulae: Binomial expansion: (1 + x ) n = 1 + n · x + n ( n - 1) 2 x 2 + ... for x ± 1 Lorentz Transformation: x 0 = γ ( v ) · ( x - vt ) y 0 = y t 0 = γ ( v ) · ± t - v c 2 x ² , γ ( v ) = 1 q 1 - v 2 c 2 . relativistic momentum: ~ p = m~u q 1 - u 2 c 2 relativistic energy: E = mc 2 q 1 - u 2 c 2 energy-momentum relation: E 2 = p 2 c 2 + m 2 c 4

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1. Short answers: (a) What did Maxwell attempt to address with the notion of ”ether”? What is wrong with it? [5 points] (b) State Einstein’s postulates which form the basis of the theory of special relativity. Why are they not compatible with Galilean Transformation? [5 points] (c) Given that nothing can travel faster than the speed of light, explain how, in principle,
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quiz1 - Physics 2D Spring 2010 Quiz#1 Theory of Special...

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