In which of the above devices, the equation 𝑑Q=𝑑U+Pdv is not applicable?
A. 2 and 3
B. 1 and 4
C. 3 and 4
D. 1 and 2
Answer:C
In which of the above devices, the equation 𝑑Q=𝑑U+Pdv is not applicable?
A. 2 and 3 B. 1 and 4 C. 3 and 4 D. 1 and 2