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24 votes
24 votes
A 1.2 m long wave travels 11.2 m to a wall and back again in 4.0 s. What is

the FREQUENCY of the wave*

User Sheepgobeep
by
2.8k points

1 Answer

10 votes
10 votes

Answer:

f = 4.67 Hz

Step-by-step explanation:

We can approximate the wave as a traveling wave, therefore the speed of the wave is constant

v = d / t

the total distance remember, in going to the wall and back is

d = 2 11.2 = 22.4 me

we substitute

v = 22.4 / 4.0

v = 5.6 m / s

now we can use the relationship between the speed of the wave, its wavelength and u frequency

v =λ f

f = v /λ

f = 5.6 / 1.2

f = 4.67 Hz

User Guneli
by
3.0k points