5 waves pass in 20 seconds. What is the frequency of the waves a) 4 Hz
Ob) 15 Hz
c).125 Hz
d) 2 Hz
e) .25 Hz

e) .25 Hz

Explanation:

Time period for one way = 20/5 = 4

The formula for frequency is = 1 / T

                                                = 1/4

                                                =0.25

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answer: i don't know the answer good luck

explanation:

like poles repel so keep pushing north to north and repels funny to see this