12. a 0.5 kg ball traveling at 6.2 m/s collides head-on with a 1.0 kg ball traveling in the
opposite direction at a speed of 12.0 m/s. after the collision, the 0.5 kg ball rebounds at
a speed of -14.0 m/s. what is the final speed of the 1.0 kg ball?

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”