God dame

Look at this physics question:

Consider a thin disc of radius a with charge density 'sigma'. Show that the electric field at a distance x along the axis that passes through the centre of the disc (perpendicularly) is given by

I did it, but man, these questions take fucking ages...

I've done 2 in about 4 hours and I have 8 more to do. And that's only Physics. I've got Maths (Lagrange Multipliers, anyone?), Materials (Mmm, entropy and enthalpy!) and Evolution & Behaviour work to do as well, all for Tuesday, except the essay for E&B which is due in on Thursday.