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Unformatted text preview: δ = p 8 . 3 2 + (2 . 26 + 2 . 11) 2-p 8 . 3 2 + (2 . 26-2 . 11) 2 (7). Correct answer is A The period of time between intensity maxima is just 1/(beat frequency). Here the beat frequency is just the diﬀerence of the two frequencies, i.e. 38/min = 38/60 Hz (8). Correct answer is D The tension is just F= μv 2 , where μ is the mass per unit length. This can determined from the density by multiplying with the cross sectional area; hence F = 2700 * π * (2 . 3 × 10-3 ) 2 * (30) 2 ’ 40 N 2 (9). Correct answer is D Energy transport is always proportional to the square of the amplitude (10). Correct answer is D The fact that sound intensity goes down from he source is a direct consequence of conservation of energy...
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This note was uploaded on 12/13/2011 for the course PHYS 2C PHYS 2C taught by Professor Groisman during the Spring '11 term at UCSD.
- Spring '11