A spherical cavity is excised from the inside of the sphere. The cavity has radius a4 and is centered at position h⃗ , where |h⃗ |<34a, so that the entire cavity is contained within the larger sphere. Find the electric field inside the cavity. Express your answer as a vector in terms of any or all of rho (Greek letter rho), ϵ0, r⃗ , and h⃗ .