a-chamber-with-a-piston-and-electrical-heater-was-filled-gas-300-j-of-energy-was

Question

A chamber with a piston was filled with gas. The chamber was heated using a hot plate which supplied 300 J of energy

A. If the piston was fixed, what are the signs of q and w?

B. If the piston was allowed to move, what are the signs of q and w?

Accepted Answer

(A) w = 0, +q (B) -w, +q

Answer

(A) -w, -q (B) w = 0, -q

Answer

(A) -w, +q (B) w = 0, +q

Answer

(A) w = 0, -q (B) -w, -q

Answer

(A) -w, -q (B) +w, -q

Answer

(A) -w, +q (B) +w, +q