Mahin678 Its not letting me talk to you, it says I have to log in but I amsorry if your busy

Don't be sorry, be happy that you can't talk to him.

I just confronted him, because he tried talking to another underage girl on this website, and he threatened to stick his middle finger in my...well...you figure it out. (hint: I'm female.)  I'm not really fazed by it, but he's a child predator, none the less.

He is nothing but a creep that most likely lives in his mother's basement with his guy-who-stays-in-the-gas-station-parking-lot looking #ss.

Have a nice day, and please, stay safe ^^

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.