How much time needed for capacitor to gain one-half charge
The time constant of an RC circuit is 6.93s. How much time t is required for the capacitor(uncharged initially) to gain one-half of its full equilibrium charge?
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An athlete at the gym holds a 5.23 kg steel ball in his hand. His arm is 71.6 cm long and has a mass of 6.74 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
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