Question

For each of the cases below determine if the heat engine satisfies the first law (energy equation) and if it violates the second law.

Answer 1

| | 1st. law | 2nd law |
| a. | Yes | Yes (possible) |
| b. | Yes | No, impossible Kelvin - Planck |
| c. | No | Yes, but energy not conserved |
| d. | yes | Yes (Irreversible Q over ΔT) |