Mechanical energy is required cycle to operate refrigerator

Assignment Help Physics
Reference no: EM13538059

A refrigerator has a coefficient of performance of 2.10. Each cycle it absorbs 3.40 104 J 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?

Reference no: EM13538059

Questions Cloud

What is the change of entropy of the gas : Three moles of an ideal gas undergo a reversible isothermal compression at 21.5°C. During this compression, 1870 J of work is done on the gas. What is the change of entropy of the gas?
Calculate the entropy change of the water while it cools : You make tea with 0.375 kg of 94.6°C water and let it cool to room temperature (20.0°C) before drinking it. Calculate the entropy change of the water while it cools.
What is the work output of the engine during one cycle : A Carnot heat engine has a thermal efficiency of 0.615, and the temperature of its hot reservoir is 775 K. If 2375 J of heat is rejected to the cold reservoir in one cycle, what is the work output of the engine during one cycle?
What is the temperature of the low-temperature reservoir : A Carnot engine whose high-temperature reservoir is at 580 K takes in 520 J of heat at this temperature in each cycle and gives up 309 J to the low-temperature reservoir.
Mechanical energy is required cycle to operate refrigerator : A refrigerator has a coefficient of performance of 2.10. Each cycle it absorbs 3.40 104 J of heat from the cold reservoir. How much mechanical energy is required each cycle to operate the refrigerator?
What is the thermal efficiency of the engine : A diesel engine performs 2090 J of mechanical work and discards 4125 J of heat each cycle. What is the thermal efficiency of the engine?
Compute the expectation value in angstroms : Write down the wave function for the ground state of an electron in a hydrogen atom in spherical coordinates. What are n, l, and m? Compute the expectation value (r), in Angstroms.
Is the image upright or inverted : A concave cosmetic mirror has a focal length of 24 cm. A 5.0 cm -long mascara brush is held upright 12 cm from the mirror.
Large aquarium of height : A large aquarium of height 5.98 m is filled with fresh water to a depth of D = 2.40 m. One wall of the aquarium consists of thick plastic with horizontal length W = 7.10 m. By how much does the total force on that wall increase if the aquarium is nex..

Reviews

Write a Review

Physics Questions & Answers

  What is its speed when it moves infinitely far from origin

A charge of 2.50 is held fixed at the origin. A second charge of 2.50 is released from rest at the position (1.25 , 0.570 ). If the mass of the second charge is 2.75 , what is its speed when it moves infinitely far from the origin

  Calculate the velocity of the wind

A plane has a resultant velocity of 550 m/s N of E and airspeed 350 m/s east. Find the velocity of the wind

  How much does blood flow speed increase

The blood flow speed through an aorta with a radius of 1.00 cm is 0.365 m/s, If aorta constricts to a radius of 0.800 cm, how much does blood flow speed increase

  What is the final impact velocity of the boulder

A large boulder rests on a cliff 500 m above a small village in such a position that, if it should slide off, What is the final impact velocity of the boulder

  What is its maximum speed while it oscillates

a 0.40kg ball is suspended from a spring with spring constant 12 N/m. what is its maximum speed while it oscillates

  What is the rotation frequency of the golf ball

A golf ball with mass 45.90 g and diameter 42.60 mm is struck such that it is moving with a speed of 53.79 m/s and rotating. What is the rotation frequency of the golf ball

  How much force is needed to keep electron in circular orbit

An oversimpliefied model of the hydrogen atom has the electron orbiting the nucleus's proton at a distance of approximately 5.29x10^-11 m. how much force is needed to keep the electron in a circular orbit

  Where is the center of mass of the system

Three masses are placed at different points along a meter stick of negligible mass: 0.09 kg at 0.98 m, 0.04 kg at 0.55 m, Where's the center of mass of the system

  Compute the initial speed and direction of the proton

Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton

  Estimate the force on the wall

A 0.3 kg ball traveling at 5 m/s strikes a wall and rebounds elastically, the collision took 0.02 seconds. What is the Impulse? What is the force on the wall

  Q1 the current in a coil changes from 380 a to 190 a in the

q1. the current in a coil changes from 3.80 a to 1.90 a in the same direction in 0.510 s. if the average emf induced in

  What is the angular velocity of the stick

A hockey stick is swung with the average angular acceleration of 1.5 rad/s2. What is the angular velocity of the stick as it strikes the ball at the end of 0.8 second swing.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd