Answer:
W provides energy output, while Q provides energy input and They are equal in magnitude
Explanation:
ISOTHERMAL EXPANSION is thermodynamic process, where there is no change in the temperature the system.
"Q" means heat while "W" means work.
From the first law of thermodynamics,
dU = dQ – dW
Where
dW = pdV
FOR ISOTHERMAL process
dU = 0 ( there is no change internal energy and the system is loosing the internal energy due to work "W")
dQ – dW=0
dQ=dW
W=Q (for an ideal gas)
*Therefore both Q and W are equal in magnitude because the system needs more internal energy due to loss of energy during Work.
In conclusion "W" provides energy output, while Q provides energy input.
