Asked Jan 21, 2020

How an ice box or refrigerator keep things cold for a long time?


Expert Answer

Step 1

Refrigerator works based on the principle heat is taken from the source at a higher temperature and is given to the sink at a lower temperature. To transfer heat from a higher temperature to a lower temperature work must be done on the system.

Step 2

During this process of pumping heat, the internal energy of the system reduces and ...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in




Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Consider two charges, where one (+2.10 nC) is at the origin and the other (-4.41 nC) is at the posit...

A: Draw the following diagram to represent the position of charges.


Q: Calculate the molar kinetic energy of 1g of helium at NTP. What will be its energy at 100 degree C?

A: Formula for the molar kinetic energy of helium gas is:


Q: help to formulate the graph. How to also add 3 hours into the graph

A: Given,Data for truck traveling from Ogallala to Lincoln


Q: Three point charges are arranged on a line. Charge q3 = +5.00 nC and is at the origin. Charge q2 = -...

A: Net force on the charge q3is zero.


Q: What is ultrasonography?

A: Ultrasonography: Ultrasonography is a diagnostic medical procedure that uses sound waves to produce ...


Q: Differentiate between emission spectra and absorption spectra. Write five-five points of each spectr...

A: Emission SpectraAbsorption SpectraProduced when atoms release energyProduced when atoms absorb energ...


Q: If a number of little droplets of water of surface tension T , all of the same radius r, cobmine to ...

A: Given:Little water droplet have surface tension T and radius ‘r’.Radius of the bigger drop = R


Q: Thickness of ice on a lake is 5cm and the temperature of air -20 degree C. If the rate of cooling of...

A: Step 1It is given that thickness, temperature, rate of cooling and area are respectively


Q: Derive Mirror Formula.

A: Draw a ray diagram for the object placed beyond the focus of a concave mirror.