betty67 betty67

25-04-2021
Physics

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A ruler vibrates 70 times in 20 seconds.what is the frequency of its vibration

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linguesreziel0 linguesreziel0

25-04-2021

Answer:

we know that that frequency= n/t

= 70/20

= 3.5 Hertz

Explanation:

i think that the answer

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