When a gas expands adiabatically; it does work on its surroundings.
But if there is no heat input to the gas, where does the energy come from to do the work?
Mark Kevin Aguilar
4 years, 5 months ago
It's the internal energy of the gas that it uses to do work in an adiabatic process.
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yeah that's right.......and that's why the temperature of the gas drops after adiabatic expansion as temperature is directly proportional to internal energy of the gas.........
u r correct but at inversion temp the opp happens
You are back!!. Was the pendulum (changing value of g) question correct?
yeah that's it.............
It is due to intramolecular force existing between molecules by 'String Theory' or 'Harmonic Oscillator'!!
from internal energy as dQ=dU+dW and dQ is 0
If gas expands adiabatically and if it is a free expansion no work is done by the gas....free expansion means into vaccum..since question is not that clear, will answer another question also...if it expands against a piston, definitely it has to do some work and it reduces its temperature hence uses itS internal energy...
Internal pressure of gas is more than external pressure , so gas expands without any heat input.