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Use the heat diagram provided above to answer the following questions. Suppose Tc = 5.0C, Th = 22C, Qc = 30 kJ, W = 17 kJ. The desired heat transfer is Qc.
1. Classify the diagram as describing a heat engine, heat pump, or refrigerator.
2. Calculate the eciency or Coecient of Performance of the device.
3. Calculate the maximum eciency or maximum COP for the device.
4. Calculate Qh.
A 50 kg ice-skater is moving toward the east across a frictionless frozen lake with a constant velocity when the constant force from a sudden wind pushes on the skater toward the west.
Calculate the total angular momentum of our Moon relative to the center of the Earth. You may assume that the Moon is a uniform sphere
Distance between 2 slits is .0500 mm and distance to screen is 2.50m. Find spacing between first-order and second-order bright fringes
In a game of pool, the cue ball is rolling at 2 m/s in a direction 30° north of east when it collides with the eight ball (initially at rest). What are the final speeds of each ball after the collision
A person pushes horizontally with a force of 210 N on a 53 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.30. What is the magnitude of the frictional force
The electric potential at a position located a distance of 19.5 mm from a positive point charge of 7.70×10-9C, Calculate the value of the second charge
Jack and Jill ran up the hill at 3.4 . The horizontal component of Jill's velocity vector was 2.5. What was the vertical component of Jill's velocity
A charge of +5.00 nC is placed at the origin, What is the electric potential at 5 cm south of origin
The sun's mass is 1.99 x 10^30 kg, the earth's mass is 5.98 x 10^24 kg, and the moon's mass is 7.36 x 10^22 kg. The average distance between the moon and the earth is 3.82 x 10^8 m, and the average distance between the earth and the sun is 1.50 x ..
An electromagnetic plane wave is traveling through a vacuum along the positive z-axis. At a particular point in space at one instant in time the electric field vector is E=i(6V/m) + j(6 V/m).
You are working the night shift at a warehouse. You want to push a 77.7-kg crate across the floor. The static and kinetic coefficients of friction are 0.6 and 0.55, respectively. Once you got it moving, what is the magnitude of the force you need ..
a 50db sound wave strikes an eardrum whose area is 5.6 x 10-5 m2. how much energy is absorbed by the eardrum per
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