Physics - corrections

I'm not sure if these are correct. Can anyone correct these for me?

- Calculate the frequency and period of a bee that beats its wings 3000 times in 30s.

f = 3000/30 = 100Hz
T = 1/100 = 0.01 s.

- An acoustic guitar contains a sound box that increases the loudness of the sounds the strings make. This is due to the property called -
a) amplification
b) refraction
c) Reflection
d) Resonance
e) Interference

I picked b.

  1. 👍
  2. 👎
  3. 👁
  1. I think I might have picked d) resonance

    1. 👍
    2. 👎

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