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WAEC - Physics (1990 - No. 26)
The diagram above represents part of a wave motion in air. If the wave travels with a speed of 300ms
-1
calculate the frequency of the wave.
360Hz
300Hz
250Hz
150Hz
100Hz
解释
2
1
/
2
λ = 3m; λ = 1.2m v= 300
f = v/x = 300/1.2 = 250Hz
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