4. [-/1 Points] DETAILS SERPSE10 22.1.OP.001. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 7.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 1.00 mC. How many electrons are added for every 109 electrons already present? Need Help? Read It Watch It Submit Answer 5. [-/1 Points] DETAILS SERPSE10 22.3.OP.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Two protons in a molecule are 4.50 x 10-10 m apart. Find the electric force exerted by one proton on the other. magnitude N direction ---Select--- (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. Fe Fa (c) What must be a particle's charge-to-mass ratio if the magnitude of the gravitational force between two of these particles is equal to the magnitude of electric force between them? C/kg Need Help? Read It Watch It Submit Answer 6. [-/1 Points] DETAILS SERPSE10 22.3.OP.007.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Three point charges are arranged as shown in the figure below. Find the magnitude and direction of the electric force on the particle q = 4.78 nC at the origin. (Let 1, = 0.250 m.) magnitude N direction . counterclockwise from the +x axis 6.00 nC 0.100 m -3.00 nC Need Help? Read It Master It Submit Answer7. [-/1 Points] DETAILS SERPSE10 22.3.P.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two small beads having positive charges q, = 20q and q2 = q are fixed at the opposite ends of a horizontal insulating rod of length d = 1.50 m. The bead with charge q, is at the origin. As shown in the figure below, a third small, charged bead is free to slide on the rod. (a) At what position x is the third bead in equilibrium? x = m (b) Can the equilibrium be stable? O Yes, if the third bead has a positive charge. O Yes, if the third bead has a negative charge. O No Need Help? Read It Watch It Submit Answer 8. [-/1 Points] DETAILS SERPSE10 22.3.OP.008.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Three charged particles are located at the corners of an equilateral triangle as shown in the figure below (let q = 1.60 JC, and L = 0.570 m). Calculate the total electric force on the 7.00-UC charge. magnitude N direction (counterclockwise from the +x axis) 7.00 ALC 60.09 -4.00 HC Need Help? Read It Master It Submit Answer 9. [-/1 Points] DETAILS SERPSE10 22.3.OP.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Two identical conducting small spheres are placed with their centers 0.285 m apart. One is given a charge of -12.0 nC and the other a charge of 16.0 nC. (a) Find the electric force exerted by one sphere on the other. magnitude direction ---Select--. (b) The spheres are connected by a conducting wire. Find the electric force each exerts on the other after they have come to equilibrium. magnitude direction ---Select- Need Help? Read It Watch It Submit