Physics question!
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Question

anonymous · Answer

Period is the time something takes to complete a full cycle: for example the amount of time it takes for you to run a lap around a field, or the elapsed time between two peaks of a wave. 

Frequency is the number of times a cycle can happen in a given amount of time. The standard unit for frequency is Hz which is just 1/s. That means it measures how many times a cycle happens per second.

The two are related by the nice and simple 
T = 1/f 
or
f = 1/T

anonymous · Answer

You may find this image helpful: http://www.calctool.org/CALC/other/converters/freq.png

korosh23 · Answer

OK for the picture, there is something confusing me!

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