Recent content by nu_hash

Thanks that seems to make more sense now.

I have derived the weak form of the transient heat conduction equation (for FEM) and I am having trouble trying to assemble the mass matrix This is the PDE: \frac{\partial U}{\partial t} = \alpha \nabla^2U This is the equation for the mass matrix for an element: M^e = \int \Psi...

Homework Statement Show that an isothermal process can be regarded as a special case of a polytropic process and deduce what value of n applies in this case. Homework Equations P_{1}V_{1}^n = const The Attempt at a Solution P_{1}V_{1}^n = mRT_{1} P_{2}V_{2}^n = mRT_{1}...

Just a simple question of what the ideal torque/engine speed graph would like? Also, could anyone direct me to a good website or book that would help me understand the following things better: tyre slip/traction control gear ratios and how they affect acceleration

I see what I did wrong now, thanks for the help

This is what I have so far although it still seems wrong http://db.tt/5P6gHmnn

Sorry I fixed it now

Homework Statement https://docs.google.com/file/d/0B65UbG8T0LS9SEFRTHhHZmR2NDA/edit Question 2 Homework Equations The Attempt at a Solution Well I tried to draw a diagram but I don't really know where to start tbh, I also can't my head around how 1200N of force only provides 600N...

The title should be self explanatory, the only reason I ask this is because thermoelectric coolers are ridiculously cheap compared to a thermoelectric generator. Is there anything I need to check when using a cooler as a generator, I am expecting temperatures on the cold to be around 20C and...