String 1 18. The figure above represents two guitar strings of different materia

Question

String 1 18. The figure above represents two guitar strings of different materials and lengths, which are on two guitars f different sizes. String 1 is plucked so it vibrates in the pattern shown. Very soon after string I is plucked, string 2, which is a short distance away, vibrates in the pattern shown. The guitars are placed in a sealed chamber and then the air is pumped out of the chamber. String 1 is again plucked and vibrates in the pattern shown. Does string 2 again vibrate in the pattern shown, and why or why not? (A) Yes, because waves again carry some of the energy produced by string 1 to string 2 (B) Yes, because the strings share the same fundamental frequency (C) No, because the amplitude of the vibration of string 1 becomes zero too quickly for string 2 to start vibrating (D) No, because almost no energy associated with the vibration of string 1 reaches string 2

Explanation / Answer

Air is pumped out of the chamber. And the sound waves cannot travel in the vacuum.

Hence the answer is

D) No, because almost no energy associated with the vibration of string 1 reaches string 2.

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