problem16_18

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

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16.18: (a) The sound level is dB. 57 or , log dB) (10 so , log dB) 10 ( 2 12 2 0 m W 10 m W 0.500 I I = = = - β β β μ b) First find v , the speed of sound at C, 0 . 20 ° from Table 16.1, s. m 344 = v The density of air at that temperature is . m kg 20 . 1 3 Using Equation (16.14), . m W 10 73 . 2
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Unformatted text preview: , s) m 344 )( m kg 20 . 1 ( 2 ) m N 150 . ( 2 2 5 3 2 2 2 max-× = = = I ρv p I Using this in Equation (16.15), dB. 74.4 or , m W 10 m W 10 2.73 log dB) 10 ( 2 12 2 5 = × =--β β...
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• Speed of sound, Decibel, sound level

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