How much work per cycle is required to run the freezer

Assignment Help Physics
Reference no: EM13277550

To make ice, a freezer that is a reverse Carnot engine extracts 50 kJ as heat at -15°C during each cycle, with coefficient of performance 5.7. The room temperature is 30.6°C.

(a) How much energy per cycle is delivered as heat to the room?

kJ

(b) How much work per cycle is required to run the freezer?

kJ

Reference no: EM13277550

Questions Cloud

What is the change in the internal energy for the gas : The temperature of 3.00 mol of an ideal diatomic gas is increased by 47.0°C without the pressure of the gas changing. What is the change in the internal energy for the gas
What will be the available signal voltage across 50-ohm load : If a single stage amplifier is having an open loop voltage gain of 80, input resistance of 800 -ohm and output resistance of 200 -ohm, what will be the available signal voltage across a 50 -ohm load connected at the output
Review and analyze financial statements : How does one review and analyze financial statements in a for-profit company - how does this compare to how financial statements are analyzed for a nonprofit organization?
Determine the elongation of the cable : A high-speed lifting mechanism supports a 880-kg object with a steel cable that is 39.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
How much work per cycle is required to run the freezer : To make ice, a freezer that is a reverse Carnot engine extracts 50 kJ as heat at -15°C during each cycle, How much work per cycle is required to run the freezer
What would be the maximum frame rate that it can support : If an amplifier, having a bandwidth of 1.5 MHz is connected to a video camera that provides frames (pictures) of size 352?288 pixels, what would be the maximum frame rate (in frames/sec) that it can support
How much overhead was allocated to each of two models year : The cost-allocation system Holly has been using allocates 90% of overhead costs to the standard cello because 90% of direct labor hours were spent on the standard model - How much overhead was allocated to each of the two models last year?
Find the fraction of the original energy lost : A ball dropped from 50 cm rebounds to a height of 33cm. Find the fraction of the original energy lost
What is the current-voltage and energy of the element : the charge entering the positive terminal of an element is q(t) = -12e-2t mC. and the power delivered to the element is p(t) = 2.4e-3t W . what is the current , voltage and energy of the element in the time interval 0

Reviews

Write a Review

Physics Questions & Answers

  The magnitude of her centripetal acceleration

A sailboat is travelling east at 4.0 m/s. A sudden gust of wind gives the boat an acceleration a = (1.35 m/s2 30° north of east). What is the boat's speed 6.0 seconds later while the gust subsides.

  Find out the height of the compressed air

Water is pumped into the tank until the air pressure reaches 4.0 atm. The temperature is constant. Find out the height of the compressed air.

  How large is the diameter of the camera required

Photographic cameras on spy satellites supposedly can read the license plate of a car on the ground. How large is the diameter of the camera required for such a feat

  What force in piconewtons does the light exert on polarizer

A polarized light beam, with a 7.33-mm-diameter circular cross section, is perpendicularly incident on an ideal polarizer, What force in piconewtons does the light exert on the polarizer

  Determine the magnitude and direction of fourth displacement

A 3 kg object id released from rest at a height of a 5 meter curved frictionless ramp. At the foot of the ramp is a spring force constant of k= 400n/m the object slides down the ramp and onto the spring compressing it to the distance x before comi..

  Find the net flux through a spherical surface

Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m, respectively. If q = -40 pC and Q = +30 pC, define the net flux through a spherical surface (radius = 1.0 m) centered on the origin.

  Calculate the potential difference across each capacitor

Two capacitors are connected parallel to each other. Let C1 = 3.50 ?F, C2 = 5.50 ?F be their capacitances, Calculate the potential difference across each capacitor: V1 = and V2 =

  Find the average intensity

The magnetic field in an electromagnetic wave has a peak value given by B = 3.3uT. Find the peak intensity. Find average intensity

  Where do you actually feel the heaviest

Theoretically where on a rollercoaster should you feel the heaviest? Use the concept of inertia. Where do you actually feel the heaviest

  What is the energy of one photon of this light

A light ray travels through medium #1 and crosses a boundary into water at an indicent angle of 21.8 degrees. what is the energy of one photon of this light

  What is the height of the shell at this moment

An artillery shell is launched on a flat, horizontal field at an angle of ? = 37.8° with respect to the horizontal and with an initial speed of v0 = 277 m/s. What is the horizontal distance covered by the shell after 9.26 s of flight? What is the ..

  Find the value of accleration, retardation

A car starts from rest and accletation uniformly for 10s to a velocity of 8m/s. Find the value of accleration, retardation and total time taken

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