# Determining wave frequency from a graphPage 1

Slide 1

## Determining wave frequency from a graph

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f

Frequency = #of cycles/time

Measured in Hertz (Hz)

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1 cycle = 1 full wave to repeat itself

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Time in seconds

3 cycles

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from 0 to 12 seconds

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Time in seconds

0

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f=3 /12 s = ¼ Hz

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Time in seconds

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Or determine the time for 1 full wave cycle

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1 cycle in 4 seconds= ¼ Hz

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Time in seconds

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Period symbol T

The time for 1 cycle

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The period for 1 wave is 4 seconds T=4

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Time in seconds

Slide 11

What is the frequency?

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Time in seconds

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24

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?

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Time in seconds

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3 cycles

0 to 24 seconds

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Time in seconds

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3 cycles

0 to 24 seconds

3/24 s= 1/8 Hz

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OR

Frequency – 1 cycle in x seconds

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f=1 cycle in 8 seconds= 1/8 Hz

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Time in seconds

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