A weightless piston divides a thermally insulated cylinder into two parts of volume v and 3v
Answers
Answered by
0
Answer:
312.05 K
Explanation:
As the expansion is against zero pressure, so no work is done. Now, for given mass of gas,
PV = P1V1
= P1 x 4V
∴ P1 = P/4 is the pressure of gas after expansion.
In the second process, compression is adiabatic, so
Change in internal energy = work done in adiabatic compression.
= 8P1V = 2PV
= 2 * 2 * 105 * 10-3 = 400J
Further,
∴
= 12.05
∴ Final temperature = T1 + (T2 - T2)
= 300 + 12.05 = 312.05 K
Similar questions