The Mathematical Description of a Wave Video Lessons

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Problem: 1. A wave with a period of 0.008 second has a frequency of A. 80 Hz. B. 12.5 Hz. C. 800 Hz. D. 125 Hz. 2. If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is A. 90 degrees. B. 80 degrees.C. 0 degrees. D. 40 degrees. 

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1.

Frequency, f = 1/T

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Problem Details

1. A wave with a period of 0.008 second has a frequency of 

A. 80 Hz. 

B. 12.5 Hz. 

C. 800 Hz. 

D. 125 Hz. 


2. If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is 

A. 90 degrees. 

B. 80 degrees.

C. 0 degrees. 

D. 40 degrees. 

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