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Unformatted text preview: Physics 2D Quiz #1 Department of Physics, UCSD Summer Session II - 2009 Prof. Pathria 7 August 2009 Some Useful Data Speed of light, c = 3 10 8 m/s. Lorentz Transformations: x = ( x- vt ) t = ( t- vx c 2 ) x = ( x + vt ) t = ( t + vx c 2 ) = 1 q 1- v 2 c 2 Relative Velocity: u = u- v 1- uv c 2 Law of Addition of Velocities: u = u + v 1+ u v c 2 Doppler effect (for light from a receding source): f = f q 1- v c 1+ v c Instructions Please write your answers in your blue book, and make sure your secret code number is written on all pages in indelible ink. 1 1. Consider two systems of reference S and S such that, relative to S , S is in uniform motion with velocity v . Two events E 1 and E 2 are observed in both systems. In S the events occur at the same place but are separated by a time interval of 4 s. In S they occur at different places and are separated by a time interval of 6 s....
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