Question

A sound wave that travels with a speed of 30 cm/s and a frequency of 2 kHz has its time period as

Answer 1

Answer:

Explanation:

Speed of sound wave v = νλ = 2000 × 0.35 = 700 m/s Distance d = 1.5 km = 1500 m Time t = dv = 1500700≈ 2 s. ... A sound wave has a frequency of 2 kHz and wavelength 35 cm.

Answer 2

Explanation:

Speed of sound wave v=νλ=2000×0.35=700 m/s

Distance d=1.5 km=1500 m

Time t= d/v= 700/1500 ≈ 2s

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