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Consider a heat engine that operates between thermal reservoirs at 510 K and 242 K. Suppose the engine does 4900 J of work while it expels 103 J of energy to the cold reservoir. Is this engine possible in the real world? Hint: Violations of the second law of thermodynamics do not occur in the real world. Yes, or no? Why?
A heat engine operates in a Carnot cycle between 84.0°C and 345°C. It absorbs 20,800 J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
a force of 40.0 n is required to start a 5.0-kg. box moving across a horizontal concrete floor.a what is the
The upward normal force exerted by the floor is 610 N on an elevator passenger who weighs 660 N. What is the reaction force to weight of the passenger
A crane drops a 1.0 kg steel ball onto a steel plate. The balls speed just before impact is 2.0m/s. what is the bounce back speed right after the impact
A blue car with mass mc = 459.0 kg is moving east with a speed of vc = 19.0 m/s and collides with a purple truck with mass mt = 1245.0 kg that is moving south with a speed of vt = 10.0 m/s. obtain the magnitude of the initial momentum of the truck
A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm. compute the self-inductance of this solenoid
A 1.35 block is attached to a spring with spring constant 14. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50. What are The block's speed at the point where = 0.750 A.
Coulomb's Law describes the force between two charged objects, What is the magnitude and direction of the electrical force on object 2 due to Object 1
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
A 24.0 kg gold bar at 27.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature
An asteroid in an elliptical orbit about the sun travels at 1.3 106 m/s at perihelion (the point of closest approach) at a distance of 2.2 108 km from the sun
A spherical object with a radius of 40.0 cm has a net charge of 37.7uC distributed uniformly throughout its volume, Using Gauss's Law, calculate the electric field 71.5 cm from the center of the sphere
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