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# Thermodynamics Free Doubts and Solutions

## How much heat energy a petrol engine would require to do 20 kWh of work? Its adiabatic compression ratio is 9 and ?= 1.5.

Asked by sathish 12th January 2013, 11:39 PM

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## while v pump air into de cycle through air pump,v feel hotness in de air pump and de tube,,,,is that due 2 de friction created due 2 de piston or anything else. explain pls.

Asked by sathish 11th January 2013, 11:31 PM

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## Explain various part of carnot's engine? explain the working of carnot engine?

Asked by Kashif 8th January 2013, 8:13 PM

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## what is specific heat? how are cp and cv calculated?

Asked by Nitin Gupta 2nd January 2013, 11:05 AM

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## When 495 grams of boiling water is poured in a mug which weighs 0.15kg,then the temperature of water falls to 69.5degree Celsius if the specific heat capacity of the mug is 0.8*10^3 Calculate the amount of heat lost by water?

Asked by Manmohan Singh Rekhi 1st January 2013, 12:13 PM

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## sir, in the video you have to ask a question two moles of an ideal gas expands isothermally at 298k,from an initial volume of vi=0.025m3 to a final volume of vf=0.050m3? In the answer n=2.0 moles R=8.31J/(mol.k)can you tell me why the value of n=2.0moles R=8.31j(mol.k).

Asked by Pawan chhipa 16th December 2012, 9:29 AM

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## A refrigerator with its power on is kept in a closed room ,with its door open. What happens to the temperature of the room? why?

Asked by 11th December 2012, 11:09 AM

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## How does the internal energy of a given mass of gas depends upon Pressure, Volume, Temperature of gas, Process in achieving that state of mass of gas?

Asked by Divyansh 5th December 2012, 5:51 PM

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## What are Adiabatic Wall,Diathermic wall,Thermal wall,Diadiabatic wall?

Asked by Divyansh 5th December 2012, 5:46 PM

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## how does fuel like petrol etc convert itself in form of heat energy which indeed converts into mechanical energy in vehicles?

Asked by 2nd December 2012, 10:02 PM