problem08_42

University Physics with Modern Physics with Mastering Physics (11th Edition)

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8.42: a) Using Eq. . ), 24 . 8 ( 3 1 u 2 u 1 u 2 u 1 = = + - V v A b) The kinetic energy is proportional to the square of the speed, so 9 1 = K K A c) The magnitude of the speed is reduced by a factor of 3 1 after each collision, so after N collisions, the speed is ( 29 N 3 1 of its original value. To find
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Unformatted text preview: N , consider . 10 ) 3 ln( ) 000 , 59 ln( ) 000 , 59 ln( ) 3 ln( 000 , 59 3 or 000 , 59 1 3 1 = = = = = N N N N to the nearest integer. Of course, using the logarithm in any base gives the same result....
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