In music, the note G above middle C has a frequency of about 392 Hz. If the speed of sound in the air is 340 m/s, what is the period of a wave made by a piano when the G is struck? (1 point)
A) 3.40 s
B) 0.0029 s
C) 0.0026 s
D) 3.92 s
To find the period of the wave, we use the formula:
frequency = 1 / period
Given that the frequency of the G above middle C is 392 Hz, we can rearrange the formula to solve for the period:
period = 1 / 392 Hz = 0.00255 seconds
Therefore, the closest answer choice is:
C) 0.0026 s