Under what conditions do shock waves occur? A) The frequency of the waves is the

Question

Under what conditions do shock waves occur?
A) The frequency of the waves is the resonant frequency of the system.
B) The amplitude of waves exceeds the critical shock value.
C) When two waves from dierent sources collide with each other.
D) The wave source is traveling at a speed greater than the wave speed.
E) The period of the waves matches the lifetime of the waves.

In order to produce ”beats” (temporal interference), the two sound waves should have
A) the same amplitude.
B) slightly dierent amplitudes.
C) the same frequency.
D) slightly dierent frequencies.

Explanation / Answer

B) The amplitude of waves exceeds the critical shock value, For shock large amplitude is required

D) slightly dierent frequencies. , the difference in frequency is the beat frequency

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