Warm-Up Exercise 38

Due 12:15 pm, Mon 26 Nov 2012

Physics 123, Fall 2012

Reading assignment: 39.4

Last class period we briefly discussed the famous "twin paradox". What is the seeming paradox, and how is it resolved?

What is the "rest length" of an object?

What is the "proper time" of a journey?

Was there anything from the reading assignment that you would like me to spend extra time on?

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