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**1. Homework Statement**

A Cyclic proces of three parts for a monoatomic idealgas:

1-2:

Isochor, where:

p2 = 2*p1

v2 = v1

2-3:

Adiabatic, from v2 = v3, where:

v3 > v2

p3 = p1

3-1:

unknow proces, where

v4 = v1

p4 = p1

My problem is to determine

Q1, Q2, Q3 and W1, W2, W3 and dU1, dU2, dU3

I can't find U3, W3

**2. Homework Equations**

dU1 + dU2 + dU3 = 0

W1 = 0, dU = Q (isochor)

Q2 = 0, dU = -W (adiabatic)

**3. The Attempt at a Solution**

I'm really lost on the part finding Q3, W3

:(