[填空题]
When a gas is taken from a to c along the curo u7cah5-5jbb ved path in Fig. 15– um8;p6d7xh8u 7hu srp24, the work done by the gasph76u dur ms8p8;x uh7 is $W\,=\,-35\,J$ and the heat added to the gas is $Q\,=\,-63\,J$ Along path abc, the work done is $W\,=\,-48\,J$
(a) What is Q for path abc? $J$
(b) If $P_c\,=\,\frac{1}{2}P_b$ what is W for path cda? $J$
(c) What is Q for path cda? $J$
(d) What is $U_a-U_c$? $J$
(e) If $U_d-U_c\,=\,5J$ what is Q for path da? $J$
