Recent content by katehovey

Thanks Mindscape - I will use symbols in future and I'm sorry HallsofIvy, I handed the work in this morning and no longer have it.

I'm sorry. I was in rush and didn't know how to put the symbols etc I was using on here.

I think that's what I did...:frown:

The answer I got was y(x) = e-x(5cosx +5sinx) Is that correct?

Sorry I think I've worked out how to do it. I use Euler's formula?

Find the particleur equation for the given initial conditions:- 1/2y'' + y' + 13y = 0 ; y(0) = 5, y'(0) = 0 The only method I know how to solve these doesn't seem to work. Any help is much appreciated.

No sorry Watts per meter per Kelvin. But it's ok - I've finished the question now.

I'm stuck with the final part of this question. A heat exchanger consists of a bundle of steel tubes each of 25.4mm outside diameter and with a wall thickness of 3mm. Cooling water flows through the tubes with a Reynolds number of 10,000 and a mean temperature of 40'C. Scale deposited on the...

I have a question about heat tranfer across single and double glazing but have come stuck. The question is: A window, 3m wide by 1.5m high, originally contained a single pane of glass 6mm thick. It is proposed to install double glazing consisting of two sheets of glass (each 6mm thick)...