80 points will give !

a sound wave has a frequency of 250 hz and a wavelength of 0.35 m?

1: write out the equation
2: list out your known variables
3: plug the numbers into the equations
4: solve
5: write your solution statement that includes the answer with the units

Explanation:

The expression for the speed of the sound in terms of frequency and the wavelength is as follows;

Here, v is the speed,  is the frequency of the wave and  is the wavelength of the wave.

It is given in the problem that a sound wave has a frequency of 250 Hz and a wavelength of 0.35 m.

Calculate the speed of the sound wave.

Put  and .

v= 87.5 m/s

Therefore, the speed of the sound wave is 87.5 m/s.

b) 10 minutes

girls stopped for 10 minutes.