A- For a function y = (5.832cm) cos((4.872/s) * t), please determine the period

Question

A- For a function y = (5.832cm) cos((4.872/s) * t), please determine the period (in units of seconds) of the wave.

..........

B- Frequency and angular frequency are two connected but different quantities. Given the frequency 82.6 Hz, what is the angular frequency (Hz)?

..........

C- When striking the tuning forks they will produce two distinct sounds, a high-pitched ringing and a low-pitched humming. In order to get a smooth curve you must start recording after which sound fades away?

..... Ringing

..... Humming

..... We should record both.

..... Ringing

..... Humming

..... We should record both.

Explanation / Answer

A

comparing with y=Acos(wt)

angular frequency=w=4.872

time period=2pi/w=1.2896 sec

B.angular frequency=w=2pi*frequency=518.99 rad/sec

C.Ringing

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