problem14_72

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

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14.72: a) The average density of a filled barrel is , m kg 875 m kg 750 3 m 0.120 kg 0 . 15 3 oil 3 = + = + V m ρ which is less than the density of seawater, so the barrel floats. b) The fraction that floats (see Problem 14.23) is %. 0 . 15 150 . 0 m kg 1030 m kg 875 1 1 3 3 water ave = = - = - ρ ρ c) The average density is 3 3
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Unformatted text preview: kg . 32 m kg 1172 910 = + which means the barrel sinks. In order to lift it, a tension N 173 ) 80 . 9 )( m 120 . )( 1030 ( ) 80 . 9 )( m 120 . )( 1177 ( 2 3 2 s m 3 m kg s m 3 m kg =-= 3 T is required....
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