Question

a sound wave had frequency 1000 Hz and wavelength 33 cm how long will it take to move through 1 km

Answer 1

Answer:

3.03 sec

Explanation:

v=wavelength×frequency

v=0.33×1000

v= 330m/s

time=distance÷speed

therefore t=1000÷330

t=3.03sec

Answer 2

Answer:3.03 s

Explanation:

Frequency is the number of complete vibrational cycles of a medium in one second.

In one cycle it travels a distance equal to its wavelength.

λ=cT where T is the time period which is related to the frequency as T= 1/v

The longer the wavelength, the lower the frequency, and vice versa. The speed at which a wave propagates is equal to the product of its frequency and its wavelength, which justifies the link between the two parameters.

V = λf

where,

V is the wave speed,

f is the wave frequency,

λ is the wavelength.

A wave is defined as a disturbance in a material that transfers energy without causing particle motion. They travel in a periodic, repetitive motion, transferring energy from source to destination. Its unit of measurement is the hertz. Its dimensional formula is $[M^{0} L^{0} T^{-1} ].$

v = wavelength × frequency

v=0.33×1000

v= 330 m/s

time=distance÷speed

so t=1000÷330

t = 3.03 sec

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