Question

4. Two charged spheres are on a friction-less horizontal surface. One has a charge of +3.0x 10-6 C Make the the other a +6.0x 10-6 C charge. Sketch the two spheres, showing all forces on them. length of your force arrows proportional to the strength of the forces Two positive charges of 6.0 x 10-6 C are separated by 0.50 m. Draw a force diagram for each of the charges, considering only electrostatic forces. the charges? Is this force repulsive or attractive? 5. What is the magnitude of the force between A negative charge of 2.0 x 10-4 C and a positive charge of 8.0 x 10-4 C are separated by 0.30 m. What is the magnitude of the force between the charges? Is this force repulsive or attractive? 6. 7. A young man accumulates a charge qi of +2.0 x 10-5 C while sliding out of the front seat of a car. His girlfriend, who had been waiting in the wind, has picked up some extra electrons and now has a charge q of -8.0x 10-5 c Draw a sketch of the situation. Estimate the magnitude of the electrical force that each person exerts on the other when separated by a distance of 6.0 m. Is the force attractive or repulsive? CModeling Workshop Project 2006 El-Chargo&Field ws) v3.0

Answer 1

Force will be Repulsive F = K q_1 q_2/r^2 F = 9 times 10^9 times 6 times 10^-6 times 6 times 10^-6/0.5^2 F = 1.296 N rightarrow Repulsive F = K q_1 q_2/r^2 F = 9 times 10^9 times 5 times 10^-4 times 8 times 10^-4/0.3^2 F = 16000 N rightarrow Attractive F = 9 times 10^9 times 2 times 10^-5 times 8 times 10^-5/(6)^2 F = 0.4 N rightarrow Attractive