Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m
A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 1.00 m parallel to the wall, she experiences destructive interference for the first time. What is the frequency of the sound? The speed of sound in air is 343 m/s.
A) 211 Hz B) 422 Hz C) 674 Hz D) 512 Hz E) 256 Hz
B
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Fill in the blank(s) with correct word
If you thrust a magnet into a closed loop of wire, the loop will
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Nellie whirls a tether ball in a horizontal circular path over her head. If the action force is Nellie pulling on the string, the reaction force is
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A particle moving along the x axis has a position given by x = (24t – 2.0t3) m, where t is measured in s. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?
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