In 3.0 seconds, a wave generator produces 15 pulses that spread over a distance of 45 centimeters. calculate the wave's frequency. hz 45 15 3.0 5.0

5 Hz

Formula: Frequency = Velocity/Wavelength

Workings

To calculate the velocity

Velocity = distance/time

= 45cm / 3sec

Velocity = 15 cm/sec

To calculate wavelength

Wavelength is defined as the distance traveled by a wave from one crest to another. 

Since we are told that 15 pulses travel a distance of total 45 cm,

⇒ Distance traveled by 1 pulse will be = 45 cm/15

Wavelength = 3 cm

To calculate Frequency

Frequency = Velocity/Wavelength

Velocity = 15 cm/sec

Wavelength = 3 cm

Frequency = 15/3 Hz
Frequency = 5 Hz

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