Question

尼

哈囉，拜託誰能救一下

One mole of an ideal monatomic gas is taken around
the reversible cycle shown in Figure.1 (on the right).
What is the efficiency of this "heat engine"?
(A) 4/21; (B) 5/14; (C) 6/11; (D) 7/34; (E) None.
3Po
Por
4
a
Q4
d
Vo
est
C
Q2
2%