# Physics

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1) A child on a playground swing makes a complete to-and-fro swing each 2 seconds. The period is:

0.5 Seconds
2 Seconds

I think the answer is 2. Am I correct?

2) The period of a 440 Hertz sound wave is ___ seconds.

1/440
440

I think the answer is 440. Am I correct?

• Physics -

1) You are correct

2) No. 440 Hz means 440 cycles per second. Each cycle lasts 1/440 second.

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