Calculate the frequency in hertz, for the following cyclical events.
(a) 120 oscillations in 2.0 s

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Solution

Step 1: Given data:
No. of oscillations = 120
Time = 2.0 seconds
Step 2: Formulas Required:
Frequency is the number of oscillations per unit time.
Frequency (f) = $\frac{n o . o f o s c i l l a t i o n s}{t i m e}$ .
Step 3: Calculation:
Here the total number of oscillations = 120
Total time = 2.0 seconds
Frequency (f) = $\frac{n o . o f o s c i l l a t i o n s}{t i m e}$
f = $\frac{120}{2}$
f = $60 H e r t z$
Step 4: Conclusion:
Hence, the frequency for 120 oscillations in 2.0 seconds in a cyclic event is $60 H e r t z$ .

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