Posted by **Hannah** on Friday, December 18, 2009 at 10:33pm.

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?

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