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a wave has a wavelength of 20 mm and a frequency of 5 hertz. what is its speed?
A. 100 mm/s
B. 100 hertz/s
C. 4 mm/s
D. 25 mm/s

Respuesta :

Speed = Wavelength * Frequency 

S = 20 mm * 5 /s

S = 100 mm/s

In short, Your Answer would be: Option A

Hope this helps!
24taty
your answer is A. 100 mm/s

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