1. The problem statement, all variables and given/known data Consider a spherical shell with radius R and surface charge density σ = σ0 cosθ (a) What is the total charge carried by the shell? (b) Please evaluate the charge carried by the upper hemisphere, in terms of σ0. 2. Relevant equations Q=∫σ0 cosθ da 3. The attempt at a solution For a), is zero correct? For b), I don't know how to do the integation.