You may want lo review (Pages 613 - tb) Express your answer to two signiticant figures and include the appropriate units: Part 8 What is the direction of the net electric force on charge A ? A smart phono charger doivers charge to the phone, in the form of electrons, at a rate of 0.75C/s. How many electrons are delivered to the phone during 44min of charging? You have a lightweight spring whose unstretched length is 4.0 cm. First, you attach one end of the spring to the ceiling and hang a 3.0g mass from it. This stretches the spring to a length of 5.0cm. You then attach two small plastic beads to the opposite ends of the spring. lay the spring on a frictionless table, and give each plastic bead the same charge. This stretches the spring to a length of 4.7cm