Recent content by sm09

Yes my mistake. Thanks for your help. Was slightly confused at first but now makes sense. Very much appreciated

So obviously r has to be less that 50cm. Can we say Q/r^2= 200v and Q/(r^2 - 50^2) = 40v? Then we can find Q and substitute it into one of the equations so find r?

Is the potential energy constant through the shell?

Q/r^2

But the question states that the potential inside the shell is 200v

A non conducting spherical shell is uniformly charged. The electrostatic potential at the centre is 200v and the electrostatic potential at the distance r=50cm from the centre is 40v. Find the radius of sphere a. I am not sure where go with this. I know that the potential difference is...

The grand partition function Z of a system is given by formula: Z = Ʃ exp ((-Ei/KbT) + (μni/KbT)) where , 1, 2... i E i= are permitted energy levels, μ is the chemical potential, , 1,2... i n i= are number of particles of different types. Taking into account that averaged internal...

what is it?