A small glass bead has been charged to +7,067,195e . What is the magnitude of the electric field 6.02 cm from the center of the bead?

The figure below gives the magnitude of the electric field inside and outside a sphere with a uniformly distributed positive charge. What is the charge on the sphere? ______________C

Part a) A +6 nC charge is located 3.6 meters to the right of a +5 nC charge. Determine the magnitude of the electric field at the midpoint of the two charges. Express your answer as a positive number in N/C. Part b) A 10 nC charge generates an electric field within an isolated chamber. At a point a distance d  meters away from the charge, the electric field is measured to be 4 N/C. Determine d in meters. Use k=9 x109  for the electric constant.

1)Calculate the magnitude of the electric field at one corner of a square 1.22 mm on a side if the other three corners are occupied by 5.75×10−6 CC charges. 2)What is the direction of the electric field at the corner?