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A refrigerator has a coefficient of performance of 2.15. Each cycle it absorbs 3.30×104 of heat from the cold reservoir.
a. How much mechanical energy is required each cycle to operate the refrigerator?
b. During each cycle, how much heat is discarded to the high-temperature reservoir?
A charge = 5.00 is placed at the origin of an xy-coordinate system, and a charge = -3.00is placed on the positive axis at 4.00, Find the direction of this force
A square wire loop 11.0 cm on each side carries a clockwise current of 16.0 A. Find the direction of this magnetic field
What is the muzzle velocity
A car initially travelling at 25.90 m/s undergoes a constant negative acceleration of magnitude 1.60 m/s2 after it brakes are applied. How many revolutions does each tire make before the car comes to a stop, assume the car does not skid and the ti..
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 block of mass 2.50 kg is pushed 2.00 m along a frictionless horizontal table by a constant 16.0 N force directed 25.0° below the horizontal, Determine the work done by the force of gravity
Does the force that your hand exerts on the bag's handle do any work? Define. Does this force do any work while you are riding up an escalator at a constant velocity.
A place kicker must kick the football from a point 30.2 m from the goal and clear a bar 3.00 m above the ground. what is the vertical component of the ball's velocity
A thief was trying to pull a 20 kg coffer (a coffer is a box usually used to hold valuables) along an essentially frictionless horizontal surface. What was the work done on the coffer by the rope
Consider a conical pendulum with a bob of mass m = 68.0 kg on a string of length L = 10.0 m that makes an angle of ? = 7.00° with the vertical. Determine the radial acceleration of the bob
An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 21.5 m/s, What is the velocity of the end of the train as it leaves
Compute the ground state energy and wavefunction
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