transfer Definition and 6 Threads

The equation for heat transfer rate, q=-kA (delta T/ delta x). Given that plastic with the same dimension as a metal has a low conductivity than the metal and the heat transfer rate in the materials would be different. Why was the coefficient 'k' thermal conductivity of a material added to the...

Hi, I have some trouble understanding the charge transfer process in photodetectors that are built from two different semiconductors, creating depletion region. To my knowledge, to make an effective detector, there needs to be effective charge separation, in order to avoid recombination...

Hello! If I have a 2 level system with the energy difference between the levels ##\omega## and a photon source, producing ##n## photons per second, with a frequency ##\omega/3##. What is the probability of having a 3 photon excitation and how can I derive it?

Hi, I'm doing a project on heat transfer using hot air piccolo tubes as an anti-ice system on the inside of an airplane wing. I've been reading as much info as possible using research papers from modern times and all the way back to when NASA was still NACA haha. I am planning to do a 3D...

As I'm studying for my PE and taking practice exams, I came across several problems where the solution assumes that a steam turbine is isentropic. I am now all confused and questioning my knowledge up to this point. It says in the problem statement that the turbine is "80% efficient". If that is...

What do i need to do for transfer characteristics for the first problem (B)? I plotted the ##V_1## and ##V_2## plot on the same graph: Is it correct? For the second problem , i guess the capacitor ##C_1## is just there to ensure AC flow . But really unsure how to approach this .