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A nuclear power plant has a maximum steam temperature (T_H) of 310 MW. It produces 410 T_C of electric power in the winter, when its is effectively -8 degree celsius . Find its maximum winter efficiency. If its summertime T_C is 33 degree celsius , what's its summertime electric power output, assuming nothing else changes?
A 500? resistor and a 240mH inductor are connected in series with an ac generator with an rms voltage of 17.0V, compute the rms current in this circuit
A 500g model rocket is on a cart that is rolling to the right at a speed of 3.0m/s. The rocket engine, At what horizontal distance left of the hoop should you launch
If you were to build a pipe organ with open-tube pipes spanning the range of human hearing (20 Hz to 20 kHz), what would be the range of the lengths of pipes required
A rod moving in the positive x direction is measured by a stationary observer to have a length of 10.0meters and to be oriented at an angle of 70.0 degrees with respect to the positive x axis
A 20.0kg crate slides down a 29° incline at constant speed. What is the force of friction between the crate and incline
The plates of a spherical capacitor have radii 36.0 mm and 44.0 mm. What must be the plate area of a parallel-plate capacitor with the same plate separation and capacitance
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. find the coefficient of kinetic friction between the sled and the trail
Three capacitors having capacitances of 8.3\mu F , 8.8\mu F , and 4.0\mu F are connected in series across a 38-{\rm V} potential difference. What is the total energy stored in all three capacitors
You have a cup containing 220 g of freshly brewed coffee which, at 75C, is too warm to drink. estimate how much the entropy of the universe increases
A rocket is launched vertically from rest; and it burns fuel at a constant rate of 136 kg/s. Exhaust gases are expelled with a speed of 5.25 x 10^3 m/s relative to the rocket. what is the magnitude of the thrust?
A comet with a mass of 7.75 1011 kg strikes Earth at a speed of 26 km/s. Find the kinetic energy of the comet in joules
A police investigator measures straight skid marks 29.0 m long in an accident investigation. Assuming a friction force and car mass the same as in the problem above, what was the minimum speed of the car when the brakes locked
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