One scientist is using an electromagnetic wave to map the dust between stars. The electromagnetic wave has shorter wavelength th
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Answer:
a) , b)
, c)
Explanation:
a) The net torque is:
Let assume a constant angular acceleration, which is:
The moment of inertia of the wheel is:
b) The deceleration of the wheel is due to the friction force. The deceleration is:
The magnitude of the torque due to friction:
c) The total angular displacement is:
The total number of revolutions of the wheel is: