4. [-/10 Points] DETAILS SERCP11 15.3.P.030. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Three point charges are located on a circular arc as shown in the figure below. (Let r = 3.92 cm. Assume that the +x-axis is to the right and the +y-axis is up along the page.) +3.00 nC -2.00 nC 30.0 30.00 +3.00 nC (a) What is the total electric field at P, the center of the arc? magnitude N/C direction -Select- (b) Find the electric force that would be exerted on a -5.47 nc point charge placed at P. magnitude direction -Select-- Need Help? Read it 5. [-/10 Points] DETAILS SERCP11 15.8.P.045.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An electric field of intensity 3.20 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.700 m long if the following conditions are true. (a) The plane is parallel to the yz-plane. N . m /c (b) The plane is parallel to the xy-plane. N . m /C c) The plane contains the y-axis, and its normal makes an angle of 30.0 with the x-axis. N . m /c Need Help? Read it Master It 6. [-/10 Points] DETAILS SERCP11 15.8.P.051. MY NOTES ASK YOUR TEACHER A point charge q is located at the center of a spherical shell of radius a that has a charge -q uniformly distributed on its surface. Find the electric field for the following points: (a) for all points outside the spherical shell O E = q/4xr O E = Kq/r2 OE = Kq2/12 none of these OE = 0 b) for a point inside the shell a distance r from the center O E = k q/r2 none of these OE= Kq2/12 O E = q/4xr2 OE= 0