prob set 1

prob set 1 - PHYS 271: Problem Set 1 Due Fri., Jan. 16,...

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Unformatted text preview: PHYS 271: Problem Set 1 Due Fri., Jan. 16, 2009 at the start of class. Late assignments will not be graded. Problem sets are to be done individually. Be sure to put your name and student number on your assignment; problem sets without a name will not be graded . For all problems, be sure to fully explain what you are doing using words. 1. Some completely classical (non-quantum) probability. Consider a particle stuck between two walls in one dimension. The particle is forever bouncing back and forth between the two walls (which are located at x = 0 and x = L ). Its momentum is + p when it is moving to the right, and- p when it is moving to the left. (a) Imagine we look to see where the particle is at some completely random time. What is the probability we find it between between x = x and x = x + a (where both x and x + a are between and L )? Clearly explain your reasoning in words. (Hint: How long does the particle take to complete one round trip from the left wall, to the right wall, then back to the left wall? During this round trip, howround trip from the left wall, to the right wall, then back to the left wall?...
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This note was uploaded on 01/10/2011 for the course PHYS 271 taught by Professor Aashishclark during the Winter '10 term at McGill.

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prob set 1 - PHYS 271: Problem Set 1 Due Fri., Jan. 16,...

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