A refrigerator does 26.0 k) of work while moving 117 kJ of thermal energy from inside the refrigerator. (a) Calculate the refrigerator's coefficient of performance. (b) Calculate the energy it transfers to its environment. kJ

A refrigerator does 26.0 k) of work while moving 117 kJ of thermal energy from inside the refrigerator. (a) Calculate the refrigerator's coefficient of performance. (b) Calculate the energy it transfers to its environment. kJ

Name: A refrigerator does 26.0 k) of work while moving 117 kJ of thermal en
Uploaded: 2022-11-23T13:49:29.000Z
Channel: Bartleby
Description: A refrigerator does 26.0 k) of work while moving 117 kJ of thermal energy from inside the refrigerator.(a) Calculate the refrigerator's coefficient of performance.(b) Calculate the energy it transfers to its environment.kJ

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A diesel engine has efficiency 0.180. (a) In order for this engine to do 1.24 * 10^4 J of work, how many joules of heat must it take in? (b) How many joules of this heat is discarded?
Heat engines take input energy in the form of heat, use some of that energy to do work, and exhaust the remainder. Similarly, a person can be viewed as a heat engine that takes an input of internal energy, uses some of it to do work, and gives off the rest as heat. Suppose a trained athlete can function as a heat engine with an efficiency of 0.16. (a) What is the magnitude of the internal energy that the athlete uses in order to do 1.7x104 J of work? (b) Determine the magnitude of the heat the athlete gives off.
Energy as heat is input into a steam turbine to convert 13.5 kg of liquid water at 25.0°C to water vapor at 100.0°C every hour. The efficiency of this heat engine is 21.6%. (2.A) What is the power output of the heat engine, in watts?(2.B) The temperature of the heat engine's boiler is 100.0°C, while the exhaust reservoir is maintained at 8.00°C. What is the difference between the theoretical maximum efficiency if the engine, and its actual efficiency? Please express your answer as a percentage.
An engine does 3250 J of work and discards 5750 J of heat. Find the efficiency of this engine. Show the solution. Answer: E = 36.1% Max efficiency = 36.1% Actual efficiency = 37%
A heat pump has a coefficient of performance equal to 4.85 and requires a power of 1.76 kW to operate. (a) How much energy does the heat pump add to a home in one hour? (b) If the heat pump is reversed so that it acts as an air conditioner in the summer, what would be its coefficient of performance?
A heat pump has a coefficient of performance of 4.6 . If the heat pump absorbs 30 J of heat from the cold outdoors in each cycle, the heat expelled (in J) to the warm indoors is
A heat engine operates between a hot reservoir at 500°C and a cold reservoir at 25°C. It has an efficiency of 40%. Calculate the amount of heat absorbed from the hot reservoir when the engine expels 1500 J of heat to the cold reservoir.
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 715 W. (a) How much energy does it deliver into a home during 2 h of continuous operation? (b) How much energy does it extract from the outside air in 2 h? Need Help? Read It
A certain refrigerator has a coefficient of performance of 1.8. If this refrigerator absorbs 2.5x10^4 J of heat from the cold reservoir during each cyle, how much mechanical work is needed to run this refrigerator for each cyle? how much heat does the refrigerator dump into the hot reservoir during each cycle?
A certain heat engine does 9.5 kJ of work and 8.00 kJ heat transfer occurs to the environment in a cyclical process. (a) What was the heat transfer (in kJ) into this engine? kJ (b) What was the engine's efficiency (in percent)? %
9) A heat pump is used to move heat from 10°C air outside, to a 22 °C air inside. The practical coefficient of performance of this pump is 4.1, and it uses 12000 J of electric energy. a) Find the energy this system adds to the house. b) Find the theoretical (maximum) coefficient of performance for this system. 5
A freezer has a coefficient of performance of 6.30. It is advertised as using 436 kWh/yr. Note: One kilowatt-hour (kWh) is an amount of energy equal to running a 1-kW appliance for one hour. Energy used in a single day - 4360000 J Energy removed from fridge in a single day - 27468000 (c) What maximum mass of water at 22.5°C could the freezer freeze in a single day (in kg)? (The latent heat of fusion of water is 3.33 105 J/kg, and its specific heat is 4186 J/kg · °C.)