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1. A pulley of radius 0.3 m is rotating counter-clockwise and is pulling a weight upward. The weight slows the spinning pulley so that it comes to rest. The angular acceleration is -2.10 R/s^2
a. If the pulley's initial angular speed is 5.4 R/s, how many seconds does it take for the pulley to come to rest?
b. Through what angle in radians does the pulley turn during this time?
c. What was the initial upward speed in m/s of the weight?
2. A car engine is initially rotating at 200 rad/s. It is then turned off and takes 3.0 s to come to a complete stop. Assuming that the acceleration is constant, what is the angular acceleration of the engine in R/s^2
An air-filled spherical capacitor is constructed with inner and outer shell radii of 7.00cm and 14.0cm, respectively. Calculate the capacitance of the device
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A series ac circuit is shown. The inductor has a reactance of 80 Omega and an inductance of 200 mH. A 90- Omega resistor and a capacitor whose reactance is 130 Omega , are also in circuit. The rms current in the circuit is 1.3A. What is the phase ..
Suppose the gasoline in a car engine burns at 637 oC, while the exhaust temperature (the temperature of the cold reservoir) is 106 oC, Determine the ratio of the total work produced by both engines to that produced by the first engine alone
a horizontal desk surface measures 1.85 m x 1.48 m. if earths magnetic field has magnitude 0.436 mt and is directed
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