Question

A sound wave is moving with a frequency of 700 Hz. What is the period of this sound wave?

700 s
1/700 s
1/700 Hz
70 s

Answer 1

1/700s

Step-by-step explanation:

took test

Answer 2

The period T of a wave is the reciprocal of the frequency f:

`T= (1)/(f)`
The frequency of the wave in the problem is
`f=700 Hz`, so the period is (keeping in mind that
`1 Hz=1s^(-1)`)

`T= (1)/(700 Hz)= (1)/(700 s^(-1) )= (1)/(700) s`