In: Physics
A spherical cloud of negatively charged particles carries a charge density that is modeled by: ρ=ρ0(1−r/R)
Where ρ0 is the central density (which is 1.2 nC·m-3), R is the radius of the cloud (which is 2.9 m) and r is the distance from the centre of the cloud.
a) Determine the electric field at 1.2 m from the centre of the cloud: __________ N·C-1
b) Determine the electric field at 4.1 m from the centre of the cloud: __________ N·C-1