Question

As a sound source approaches someone, the frequency of the sound wave

increases.

decreases.

decreases, then increases.

remains constant.

Answer 1

Is this increases??

Answer 2

you need to look up the Doppler Effect

Answer 3

Yeah I have. But is it increases or remains constant?

Answer 4

what does the doppler equation predict?

Answer 5

I got this question right. I put in increases. :)

Answer 6

great!