The voltage, v(t) and current i(t) input to a circuit is given by v(t) = 240 cos(2πt) and i(t) = v(t) 2 .What is the Power consumed by the circuit?. P = R T 0 v(t)i(t)dt, where T is the time period of the waveform v(t). (Steps would suce if you cannot quickly get the nal value).

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?