Answered

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What is the period of a water wave if 4.0
complete waves pass a fixed point in 10. seconds?
(1) 0.25 s (3) 2.5 s
(2) 0.40 s (4) 4.0 s

Sagot :

sbcardinals
Period = 10 seconds / 4 waves

Period = 2.5 seconds
skyluke89

We are told that 4.0 complete waves pass a fixed point in 10 seconds. Using these data, we can find the frequency of the wave, which is given by the number of complete cycles per second:

[tex] f=\frac{N}{t}=\frac{4}{10 s}=0.4 Hz [/tex]


Now we can find the period of the wave, which is the reciprocal of the frequency:

[tex] T=\frac{1}{f}=\frac{1}{0.4 s}=2.5 Hz [/tex]


So, the correct answer is (3) 2.5 s.

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