A wave travelling with a speed of 35 m/s and a frequency of 4 kHz. Calculate the number of waves crossing a point in one second
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0
Answer:
= c / λ = wave speed c (m/s) / wavelength λ (m). The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles per second
Answered by
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Answer:
0.00875
Explanation:
v = f × λ
where:
v is the wave speed in metres per second, m/s
f is the frequency in hertz, Hz
λ (lambda) is the wavelength in metres, m
v = 35m/s
f = 4kHz = 4 x 1000 = 4000Hz
λ = ?
v = f × λ
35 = 4000 x λ
35/4000 = λ
7/800 = λ
0.00875 = λ
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