Question

a longitudinal standing wave, in second harmonic mode, is established in a tube open at only one end. the frequency of standing wave is 660 Hz and speed of sound in air is 343m/s. What is length of tube?
a)twice as fast
b)half as fast
c)four times as fast
d)the same​

Answer 1

Answer:

Twice as fast

I think so I'm not sure

Answer 2

Answer:

d

Explanation:

length of the tube is same