While attempting to tune the note C at 523 Hz, a piano tuner hears 2.00 beats/s between a reference oscillator and the string. (a) What are the possible frequencies of the string

525 Hz and 521 Hz

Explanation:

The possible frequencies of the string can be found by

Where B is beats/sec and f0 = 523 Hz is the fundamental frequency and f1 is to be found

Hence the possible frequencies of the string are 525 Hz and 521 Hz

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

heats surface water up