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प्रश्न
Did joule converted mechanical energy to heat energy? Explain.
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उत्तर
Joule essentially converted mechanical energy to internal energy. In his experiment potential energy is converted to the rotational kinetic energy of paddle wheel and this rotational kinetic energy is converted to the internal energy of water.
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संबंधित प्रश्न
Define the internal energy of the system.
Define one calorie.
Define the quasi-static process.
Give the expression for work done by the gas.
Derive the expression for the work done in a volume change in a thermodynamic system.
An ideal gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 bar from an initial volume of 2.50 dm3 to a final volume of 4.50 dm3. The change in internal energy (∆U) of the gas will be ______.
An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from the surrounding. What is the change in the internal energy of the system?
(Given: 1 atm-litre = 101.3 J)
A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 Bar from an initial volume of 2.5L to a final volume of 4.5L The change in internal energy, ΔU of the gas will be ______.
The value of Δ U is ______ when 2 kJ of heat is released and 6 kJ of work is done on the system.
Calculate the change in internal energy of a gas if a gas is compressed adiabatically from 25 dm³ to 15 dm³ at constant external pressure of 4 bar.
