Question

A trumpet creates a sound wave that has a wave speed of 350m/s and a wavelength of 0.8 m . What is the frequency of the sound wave

Answer 1

The frequency of sound wave created by trumpet is 437.5Hz

Step-by-step explanation:

Given

the speed of sound wave = 350 m

the wavelength of sound wave = 0.8 m

the frequency of sound wave = ?

All the waves have same relationship among wavelength, frequency and speed, which is given by the equation:

v = fλ, where

v is speed of the wave

f is frequency of the wave

λ is wavelength of the wave

therefore frequency of sound wave is given by

f = v/λ

= 350m/0.8m

= 437.5

= 437.5Hz (since 1 = 1 Hz (Hertz)

Hence the frequency of sound wave created by trumpet is 437.5Hz

Answer 2

The frequency of sound wave created by trumpet is 437.5Hz

Step-by-step explanation:

Given

the speed of sound wave = 350 m
`s^(-1)`

the wavelength of sound wave = 0.8 m

the frequency of sound wave = ?

All the waves have same relationship among wavelength, frequency and speed, which is given by the equation:

v = fλ, where

v is speed of the wave

f is frequency of the wave

λ is wavelength of the wave

therefore frequency of sound wave is given by

f = v/λ

= 350m
`s^(-1)`/0.8m

= 437.5
`s^(-1)`

= 437.5Hz (since 1
`s^(-1)` = 1 Hz (Hertz)

Hence the frequency of sound wave created by trumpet is 437.5Hz