Heat Transfer - Chapter 1 - Example Problem 3 - Equating conduction and convection at a surface

[@tayewoldie2488]

You are delivering this problem out of rule?

[@interceptor847]

At 10:35 when writing the fourier law equation, is there a reason you swapped T2-T1 to T1-T2? It still seems to be on the same side.

[@undreamt_fish]

I think it's a mistake cause when you solve the equation as t2-t1, only then the reqd t2 value is reached

[@JEFFANIELICUEVAS]

What is the main source or like any reference for this problem Mr. Powell

[@seafoamsweater2138]

how you do that?

[@mohammadahmadalsheyab6245]

Is it possible to calculate the time when T2 will reach 18 C at the moment of applying T1(50 C) on the left surface

[@saamirjassim2108]

Thank you sir.

[@tayewoldie2488]

How can it be? The answer is -3.3 degrees centrigrade. But it is impossible to say this number in a scientific perspective.