Two charges of + 4.0μC and + 9.0μC are 30 cm apart. Where on the line joining the charges is the electric field zero?
Answer to relevant QuestionsWhat is the electric field at the center of the triangle in Fig. 15.26? Two square, oppositely charged conducting plates measure 20 cm on each side. The plates are close together and parallel to each other. They each have a total charge of +4.0nC and – 4.0nC, respectively. (a) What is the ...A flat, triangular piece of metal with rounded corners has a net positive charge on it. Sketch the charge distribution on the surface and the electric field lines near the surface of the metal (including their direction). A rubber rod rubbed with fur acquires a charge of – 4.8 x 10-9 C. (a) Is the charge on the fur (1) positive, (2) zero, or (3) negative? Why? (b) What is the charge on the fur, and how much mass is transferred to or from ...An electron that is a certain distance from a proton is acted on by an electrical force. (a) If the electron were moved twice that distance away from the proton, would the electrical force be (1) 2, (2) 1/2, (3) 4, or (4) ...
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