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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
One component of a metal sculpture consists of a solid cube with an edge of length 0.277 m. Find the cube's mass
If a person radiates about 67 W of power at room temperature, how long does it take for a person to radiate away the energy acquired by consuming a 260 Calorie donut?
Two uniform, solid disks are rotating freely about the same axis. Then they are linked together without the aid of any external influences. Before being connected.
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.80 cm into the water. What is the weight of the truck
A 2.0 ð‘˜ð‘" package is released on a frictionless ramp inclined 53.1 ° above the horizontal, What is the speed of the package just as it reaches the spring
A pressurized water reactor produces hot water at 2000 psia and 600 deg F. This is supposed to produce saturated steam at 500 psia in the steam generator. Feed water to the steam generator is at 300 deg F.
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat and disrupting the flow of blood (and thus oxygen) to your brain. If that current persists for 2.90 min, how many conduction elec..
A positron (q = +e) moves at 3.2 multiply.gif 107 m/s in a magnetic field of magnitude 0.46 T. What is the angle between the velocity and the field
Explain how the process of "doping" a semi conductor can improve its overall efficiency. Why does "doping" require a clean room infrastructure
How much work must this force do to stop the wheel. An electron moving along the x axis has a position given by x = 11te-1t m, where t is in seconds. How far is an electron from the origin when it momentarily stops.
An electric current of 1 A flows through a 20 ? resistor which is kept at a constant temperature of 10° C by flowing water. In 1 s what is the entropy change of the resistor and the entropy change of the water?
A heater runs on an AC voltage of 120 V and draws a power of 25 W. how much current would flow through the heater
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