Recent content by Dgeld

Yes about part (a). the lower case q should be uppercase, my mistake. The Q stands for the charge of the whole sphere. And yes i agree with that part, But i don't think i can fill in Q by what i have managed to get to find E or can i? Also, i suppose it doesn't ring a bell for me as i have no...

Well the full expression then would be Q = ∫r0 (q/πr4)r(4πr²dr) My apologies, i do not know how to put a combination of sub and super script on an integral, the 0 is supposed to be at the bottom.

Yes i know it's somthing to do with Gausses law, Φ = ∫ EdA which i can then change into Q = ρ EDV I can fill in ρ as the Q/ Volume of sphere and dV for a surface area. But than i am stuck with an integral i do not know how to solve.

Homework Statement A solid isolated sphere with radius R has a non uniform charge which is given by ρ= Ar², with A a constant and r<R measured from the centre of the sphereHomework Equations (a) Show that the electric field outside the sphere is equal to E = (AR5)/(5ε0r²) (b) Show that the...