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Wave length if sound wave having frequency 2khz is 35cm how much time will it take a distance 1500m |
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Answer» Explanation:2kHz = 20,000Hz 35CM = 0.35mv=fλ (wavespeed = frequency x wavelength): V = 20000 x 0.35 = 7000 ms^1s=d/t (SPEED = distance/time) rearranges to give t=d/s: 7000/1500 = 4.67s (3 s.f) |
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