Question

The frequency of the lowest standing-wave mode on a 1.0-m-long string is 20 Hz. What is the wave speed on the string?

Answer 1

Answer:

Wave speed on the spring is 40 m/s

Explanation:

Frequency for standing wave mode of  an open- open tube is given by

$f_{} =\frac{v}{2L}$

where v is the velocity, L =1 m is the length

wave speed on the spring is

$v =2fL\\v=2\times 20\times 1\\v=40 m/s$