Question

Sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?

A.1503 Hz
B.0.002 Hz
C.500 Hz
D.4500 Hz

Answer 1

C.500 Hz

Step-by-step explanation:

the information we have about the sound wave:

speed:
`v=1500m/s`

wavelength:
`\lambda = 3m`

--------------

To find the frequency of the wave we need to use the following equation:

`v=f\lambda`

where
`v` is the velocity,
`f` is the frequency, and
`\lambda` is the wavelength.

clearing for the frequency:

`f=(v)/(\lambda) \\`

and susbtituting the values:

`f=(1500m/s)/(3m)\\ f=500s^(-1)`

and since the units of frequency in
`s^(-1)` are Hertz [Hz]

the frequency is:

`f=500Hz`

which is option C

Answer 2

Answer:500Hz

Step-by-step explanation:

Frequency=velocity/wavelength

Frequency=1500/3

Frequency=500Hz