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An ac power generator produces 50 A (rms) at 3600 V. The voltage is stepped up to 100 000 V by an ideal transformer and the energy is transmitted through a long distance power line which has a resistance of 100 ohms. What percentage of the power delivered by the generator is dissipated as heat in the long-distance power line?
A marble is thrown horizontally with a speed of 19 m/s from the top of a building. From what height above the ground was the marble thrown
A large storage tank, open to the atmosphere at the top and filled with water, Determine the speed at which the water leaves the hole
How many electrons should be removed from an initially uncharged spherical conductor of radius 0.100 m to produce a potential of 8.50 kV at the surface
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. What is its resistance
A woman can read the large print in a newspaper only when it is at a distance of 66 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
Glider A with mass 0.400 kg, gliding with a velocity of magnitude 0.50 m/s on a frictionless, horizontal air track, makes a perfectly elastic head-on collision with a glider B with mass, Find the mass of the glider B
Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume that your house is the only one using electric power. At a substation the primary coil of a step-down tran..
An insulated vertical piston cylinder device initialy contains 10kg of water, 6 kg of which is in the vapor phase. Determine the final temperature inside the cylinder
A certain thin, uniform rod has a mass of 2 kg and length 3 m. To what shorter length must you trim it (discarding the smaller part) so that the remaining length has half the original moment of inertia about its end.
A bicycle tire pump has a piston with area 0.44 in. If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump.
A 200 kg bucket of cement is accelerated upward by a force of 2200 N. the acceleration continues for 5 s. the power needed at the end of this period is
A 2100-? resistor and a 1.4-µF capacitor are connected in series across a generator (60.0 Hz, 120 V rms). Determine the average power delivered to the circuit
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