Question

when the c4 key on a piano keyboard is pressed, a string inside the piano is struck by a hammer and begins vibrating back and forth at approximately 260 cycles per second. what is the frequency in hertz of the sound wave

Answer 1

The correct answer is f= 260 Hz

Answer 2

260 Hz

Step-by-step explanation:

The frequency of a sound wave is defined as the number of oscillation which is given in cycles per time. Frequency (f) is given by the formula ;

`f = (1)/(T)` and it is measured in Hertz(Hz)

Given that;

a vibration is caused by a struck string in piano at 260 cycles and Time (T) = 1 seconds

Frequency (f) can be determined as; 260 cycles × 1 seconds

= 260 Hertz (Hz)

Hence, the frequency of the sound wave is 260 Hertz (Hz).