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Consider a system with a damping force undergoing forced oscillations at an angular frequency W (omega).(a) What is the instantaneous kinetic energy of the system?(b) What is the instantaneous potential energy of the system?(c) What is the ratio of the average kinetic energy to the average potential energy? Express the answer in terms of the ration W/W(0).(d)For what values of W are the average kinetic energy and the average potential energy equal? What is the total energy of the system under these conditions?(e) How does the total energy of the system vary with time for an arbitrary value of W? For what values of W is the total energy constant in time?
A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 43 m/s at an angle of 30o above the horizontal. How high is the rise above the fairway
A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. What is the focal length of the borrowed glasses
The G string on a violin has a fundamental frequency of 196 Hz. It is 33.0 cm long and has a mass of 0.500 g. what is the effective length of her string
A photographer in a helicopter ascending vertically at a constant rate of 12.5 m/s accidentally drops a camera out the window, How long will it take the camera to reach the ground
A 45 g golf ball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force
The maximum induced emf in a generator rotating at 249 rpm is 44 V. How fast must the rotor of the generator rotate
An electric heater plugged into a 115-V AC outlet uses an average electric power of 1200 W. What are the rms current and the maximum instantaneous current through the heater
If 7.50 kg of ice at -5.00°C is added to 12.0 kg of water at 15°C, compute the final temperature. T = 0 C, How much ice remains, if any
For your final exam in electronics, you're asked to build an LC circuit that oscillates at 15kHz, What values of inductance and capacitance must you use
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
A swimmer, capable of swimming at a speed of 1.99 m/s in still water, How far downstream will the swimmer be upon reaching the other side of the river
On a horizontal, frictionless table, an open-topped 5.50kg box is attached to an ideal horizontal spring having force constant 390N/m. Find the period of the resulting motion of the box
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