PLEASE HELP!!

Physics

1 answer:

astraxan [27]3 years ago

3 0

Answer:

Explanation:

$\lambda\\$ = v/f

^That is the formula we are going to use.

Now, we were given the speed (v), which is 20.

Now we need to find frequency, in order to solve for the wavelength.

Frequency is the amount of waves in a fixed unit of one second, meaning our F value is the value of 5 divided by 4.

5/4 = 1.25

Therefore our F is 1.25

Now lets plug it in

$\lambda\\$ = v/f

$\lambda\\$ = 20/1.25

$\lambda\\$ = 16

Conversion:

$\lambda\\$ = 8

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