Question

A string of length 0.6 M is vibrating at 100 Hz and its second harmonic and producing sound that moves at 340 m/s. What is true about the frequent or wavelength of this sound?
A) The wavelength of the sound is 0.6 m.

B) The frequency of the sound is 100 Hz.

C) The frequency of the sound is 567 Hz.

D) The wavelength of the sound is 0.9 m.

Answer 1

Answer:

B) The frequency of the sound is 100 Hz.

Explanation:

Frequency of the sound is always equal to the frequency of the source

So here we know that

length of the string is

L =0.6 m

Speed of the sound is

v = 340 m/s

frequency of the sound

f = 100 Hz

now the wavelength of the sound is given as

$\lambda = \frac{v}{f}$

$\lambda = \frac{340}{100}$

$\lambda = 3.40 m$

Answer 2

Answer: the answer is B

Explanation: I just took the quiz :)