(14%) Problem 8: A solid sphere of insulating material with radius R = 5.72 cm has a uniform volume charge density given by where po = 451 nC/m. p(r) = = { Po for r R 50% Part (a) What is the magnitude, in newtons per coulomb, of the electric field at a distance r = 2.53 cm from the center of the sphere. E(2.53 cm)= N/C sin() cos() tan() ( ) 7 8 9 HOME cotan() asin() acos() atan() acotan() sinh() E4 * 5 6 1 2 3 cosh() tanh() cotanh() + - 0 END Degrees Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback. A 50% Part (b) What is the magnitude, in newtons per coulomb, of the electric field at a distance r = 13.9 cm from the center of the sphere. R