Answer: 2*pi2*mu*f2*A2*sqrt(T/mu).
- A 2*pi2*f2*A2*sqrt(mu*T)
- B 2*pi2*f2*A2*T
- C pi2*f2*A2*sqrt(T/mu)
- D 2*pi2*mu*f2*A2*sqrt(T/mu)
Correct answer: D. 2*pi2*mu*f2*A2*sqrt(T/mu)
Explanation: Power = (1/2) mu omega2 A2 v = (1/2) mu (2pi f)2 A2 sqrt(T/mu) = 2*pi2*mu*f2*A2*sqrt(T/mu).
A standing wave forms from two identical waves travelling in opposite directions and interfering; nodes (always zero displacement) and antinodes (maximum displacement) stay fixed in place, unlike a travelling wave where the whole pattern moves.
Concept context
Wave types, superposition, standing waves, Doppler effect, and sound intensity.