PH 253 Midterm: PH253_ex1_practice
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General comments: there will be at least one problem that rewards those with mathematical uency. I. e. , the concept will be straightforward, the mathematics will not be: there will be at least one problem that rewards those with good physical intuition. I. e. , the mathematics will be straightforward, the concept may not be: it is extremely unlikely that any exam problems will involve plugging numbers into a single formula. Compare the electromagnetic energy radiated during the deceleration with the electron"s initial kinetic energy. Express the ratio in terms of two lengths, the distance mec2 . Recall the larmor light travels in time t and the classical electron radius, re = formula, which gives the total power radiated from an accelerating charge (v c): 3c3 (1: an atomic clock aboard a spaceship runs slow compared to an earth-based atomic clock at a rate of 1. 0 second per day.
