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An electric motor rotating a workshop grinding wheel at a rate of 1.16 x 102 rpm is switched off. Suppose the wheel has a constant negative angular acceleration of magnitude 2.40 rad/s2.
(a) Find how long does it take for the grinding wheel to stop?
s
(b) Find through how many radians has the wheel turned during the interval found in (a)?
rad
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 301.0 Hz. The tuner hears 2.0 beats per second. What was the original frequency of the untuned string
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