Question

I am having trouble with some questions:

-A particle undergoes simple harmonic motion. In SI units, the maximum velocity is twice the maximum displacement. What's the frequency?

a.) 0.4

b.) 0.2

c.) 0.1

d.) 0.3

-A bat emits a sound at a frequency of 30 kHz as it approaches a wall. The bat perceives the frequency of the echo as 30.9 kHz. The speed of sound is 340. The speed of the bat is closest to?

a.) 50 m/s

b.) 5 m/s

c.) 1 m/s

d.) 0.5 m/s

e.) 10 m/s

Thank you

Answer 1