I’m struggling to understand question 1.C
How do I incorporate Tw and later eliminate this?
2. Relevant equations
3. The attempt at a solution
For 1.a I used this equation: -k*A*((Tinside-Toutside)/thickness wall) I thought to put T inside first as they ask for the inward heat flow and that will be negative (heat loss)….
For 1.c I’m really stuck…