Answer:
The change in internal energy of the engine is -1,571 Joules.
Explanation:
Change in internal energy (∆U) = energy output (U2) - energy generated (U1)
U1 is the energy generated = 2203 Joules
U2 is the energy output = 632 Joules
Change in internal energy (∆U) = 632 - 2203 = -1,571 Joules
Answer / Explanation
To properly solve this question, we recall the second law of thermodynamics which sates that processes that involve the change, transformation or conversion of hear or energy is irreversible.
Recalling the aforementioned and referencing the question asked, we then know that:
δQ = dU + δA
Where:
δQ = change in heat of a given system
δA = Work done on or by the system
dU = Change in the internal energy of the given system
Solving further, we have:
δQ = dU + δA
Inserting the values from the questions representing the variables, e then have:
δQ = dU + δA
Now making dU the subject of formula since that is what we are looking for:
We then have:
dU = δQ - δA
dU = 2203 - 632
dU = 1571 joules
Therefor, the internal energy of the engine is 1571 joules
