(a) A unit of time sometimes used in microscopic physics is the shake. One shake equals 10-8...
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(a) A unit of time sometimes used in microscopic physics is the shake. One shake equals 10-8 s. Are there more shakes in a second than there are seconds in a year?
(b) Humans have existed for about 106 years, whereas the universe is about 1010 years old. If the age of the universe is defined as 1 "universe day," where a universe day consists of "universe seconds" as a normal day consists of normal seconds, how many universe seconds have humans existed?
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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