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The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 299 K. To deposit 14320 J of heat in the house, the heat pump requires 804 J of work. Determine the temperature of the well water. Give answer in K. Do not enter unit.
An ideal gas initially at 280 K undergoes an isobaric expansion at 2.50 kPa. The volume increases from 1.00 m3 to 3.00 m3 and 11.4 kJ is transferred to the gas by heat. What is the change in internal energy of the gas?
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
what advantage might there be in using two identical capacitors in parallel connected in series with another parallelpair, rather than using a single capacitor.
Two containers hold identical amounts of a monatomic gas at 20. Container A is rigid. What are the initial pressures in containers A and B
At a distance d (d > L) under the point of suspension there is an infinite plane conductor. Find the frequency of the pendulum, for small amplitudes. You can neglect gravity. What criterion determines that that is valid
An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 mabove the elevator floor works loose and falls. How long does it take for the bolt to fall to the elevator floor
When jumping straight down, you can be seriously injured if you land stiff-legged. When he bends his knees, he comes to a halt in 0.130 s. Find the magnitude of the average net force now
A 60 kg woman in an elevator is accelerating upward at 1.2 m/s^2. what is the normal force pushing upward on her feet
A refrigerator removes heat from the freezing equipment at the rate of 20kJ and ejects 24 kJ into a room per cycle. How much work is required for each cycle
A 20 kg piece of steel pipe that is 20 cm in diameter, 80 cm long, What is its angular velocity and its total kintetic energy
What's the advantage of launching space vehicles from high flying aircraft in place of from the ground.
A steel wire having a mass of 6.30 g and a length of 1.10 m is fixed at both ends and has a tension of 996 N. Find the speed of transverse waves on the wire
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