Question

5. A pendulum oscillates 40 times in 4 seconds. It's time period is_______and frequency is _________
(a) 0.1 seconds, 10 hertz.
(b) 0.2 seconds, 10 hertz.
(b) 4 seconds, 20 hertz.
(d) 10 seconds, 10 hertz.​

Answer 1

Answer:

d. 10 seconds , 10 Hertz

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Answer 2

Answer:

it's a 0.1 second 10 hertz