Hi I have done the following calculation for

1)For a sound wave that has a wavelength of 5 metres, what is the frequency of the sound? (Use 340m/sec as the speed of sound

and

2) For a frequency of 20Hz, what is the period ( T ) of the wave in seconds or milliseconds,andwhat is the wavelength in metres?

I have ....

1C) i.

If(V = W * F)then(F= V/W)

So...

(F=V/W)> plugin values for wavelength and velocity >(F = 340/5)

F = 68Hz

1C)ii.

Period (t) = (1/frequency)So...t = (1/20)

t = 0.05 seconds

Wavelength = (V/f) V= speed of sound (340 m/s)

Wavelenght = (340 * 20)

Wavelength = 6800

Am I correct??