Suppose you sound a 1056-hertz tuning fork at the same time you strike a note on the piano and hear 2 beats/second. You tighten the piano string very slightly and now hear 3 beats/second. What is the frequency of the piano string?
A) 1053 hertz
B) 1059 hertz
C) 1056 hertz
D) 1054 hertz
E) 1058 hertz

Question

Quizplus · Accepted Answer

The frequency of the piano string is 1059 hertz. This is because the piano string is tightened, which increases its frequency. The difference between the frequency of the tuning fork and the frequency of the piano string is 3 beats/second, which means that the frequency of the piano string is 1059 hertz.

Suppose You Sound a 1056-Hertz Tuning Fork at the Same