Please show the steps on how to solve the following:

16. ...A small glass bead has been charged to +20 nC. A tiny ball 1.0 cm above the bead feels a 0.018 N downward electric force. What is the charge on the ball? 19. What are the magnitude and direction of the electric force onon (a) charge A and (b) charge C in Figure P21.190? Specify the direction as "to the right" or "to the left." Figure P21.19 1.0 nC A+ -1.0 nC B 4.0 nC c+ 1.0 cm 1.0 cm 30...What are the strength and direction of an electric field that will balance the weight of a 1.0 g plastic sphere that has been charged to -3.0 nC? 34...What are the strength and direction of the electric field at the position indicated by the dot in Figure P21.340? Specify the direction as an angle above or below horizontal. Figure P21.34 +1.0 nC 5.0 cm 5.0 cm 5.0 cm -1.0 nC |