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An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 5.00 V. The RMS current delivered to the answering machine is 400 mA. If the primary (input) coil of the transformer has 600 turns, then how many turns are there on the secondary (output) coil?What is the power drawn from the electric outlet, if the transformer is assumed to be ideal?What is the power drawn by the transformer, if 10.5 percent of the input power is dissipated as heat in the coils and in the iron core of the
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V, What is the breakdown potential of this capacitor
On an essentially frictionless horizontal ice-skating rink, a skater moving at 2.6 m/s encounters a rough patch that reduces her speed by 48 % to a friction force that is 20 % of her weight
Water at 900 psi, 800ºF undergoes an adiabatic, reversible process until the pressure is 1 psi. Find the phase of the final state
When burned, 3.7 tons of coal releases the amount of energy that you use over the course of a year in the form of heat. How many tons of coal are required to provide you with your yearly energy use if you were to get that energy from a coal burnin..
A long cylindrical insulating shell has an inner radius of a = 1.42 m and an outer radius of b = 1.62 m, What is the magnitude of the electric field at a distance of r= 0.59 m from the axis
The total volume of the column of water in the neck is 0.200 m^3. Illustrate what is the magnitude of the force exerted by the water on the bottom of the container?
What average force did the block exert on the bullet if it took 0.07 s to stop the bullet?
A transparent oil with index of refraction 1.16 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
The power output of he Sun is 3.9 x 10^26 watts. Determine the intensity of the Sun's radiation on he planet Earth
A car travelling at 19 {rm m/s} runs out of gas while travelling up a 21^circ slope. How far would the car go up the hill before it runs out of gas.
A concave mirror has a focal length of 33.8 cm. The distance between an object and its image is 49.7 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
When you lift a bowling ball with a force of 98N , the ball accelerates upward with an acceleration a. Find the weight of the bowling ball
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