Question 7 (4 points) Two charged spheres, (3.5x10^-2) m apart, repel each other with a force of (1.200x10^-8) N. Determine the magnitude and sign of the charge on each if one has twice the charge of the other. Note: For this question, please include all of your work on your written solution. The answer box only looks for the lesser of the two charges. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units Add attachments to support your work Question 8 (4 points) A small body of unknown charge, travelling at (8.30x10^5) m/s, enters a (2.800x10^-1) T magnetic field at an angle of (2.0x10^1) to the magnetic field. Determine the magnitude of the charge if it experiences a force of (2.10x10*-4) N. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units Add attachments to support your work Question 9 (6 points) Compare and contrast the gravitational force, the electrostatic force and the magnetic force on a moving charge