Hey, am nevoie de ajutor la problema 7.
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Răspuns:
a) 10^5/16 Pa
b) U=0
c) L=Q=560 J
Explicație:
a) 1-2 transf izoterma => p1V1=p2V2
p2=(p1V1)/V2
p2= 2×10^5/16×2
p2= 10^5/16 Pa
b) U=U2-U1=nCv(T2-T1)
T2=T1
=> U=0
c)U=0 => L=Q
L= nRT1lnV2/V1
L=p1V1ln16
L=10^5×2×10^-3×4ln2
L=200×4×0.7
L=560 J