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{| class="wikitable"
| style="height:20px; width:300px; text-align:center;" |Calculate the [[frequency]] of a [[wave]] with a [[period]] of 0.04 seconds.
| style="height:20px; width:300px; text-align:center;" |A giant pendulum takes 16 seconds to make one complete [[oscillation]]. Calculate the [[frequency]] of the [[pendulum]].
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| style="height:20px; width:300px; text-align:left;" |'''1. State the known quantities'''
====Finding Frequency from the number of waves and time taken====
{| class="wikitable"
| style="height:20px; width:300px; text-align:center;" |A scientist wants to determine the [[frequency]] of a [[pendulum]]. They count that the [[pendulum]] [[oscillate]]s 15 times over 20 seconds. Calculate the [[frequency]] of the [[pendulum]].
| style="height:20px; width:300px; text-align:center;" |A sailor notices a buoy bounce up and down 24 times over a minute. Calculate the [[frequency]] of the [[wave]]s.
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