# Wave length/frequency/speed of sound & EM waves

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(See attached file for full problem description)

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20.25

Part A : At 20 degree C, what is the frequency of a sound wave in air with a wavelength of 17.0 cm ?

Part B : What is the frequency of an electromagnetic wave with a wavelength of 17.0 cm ?

Part C : What would be the wavelength of a sound wave in water that has the same frequency as the electromagnetic wave of part B?

20.42

This is a snapshot graph at of a 5.0 Hz wave traveling to the left (refer attachment)

Part A : What is the wave speed?

Part B : What is the phase constant of the wave?

Â© BrainMass Inc. brainmass.com December 24, 2021, 5:38 pm ad1c9bdddfhttps://brainmass.com/physics/em-waves/wave-length-frequency-speed-of-sound-em-waves-60176

#### Solution Summary

Problem 20.25 has been solved to compare frequencies of sound wave and EM wave for a given wave length. In problem 20.42 speed and phase of a given wave form are determined

$2.49