Q. A rifle is aimed horizontally at a target 47 m away. The bullet hits a target 2.00 cm below the aim point. What is the bullets flight time? What is the bullets speed as it left the barrel?
Q. The potential at the center of a uniformly charged ring is 52 kV, and 15 cm along the ring axis the potential is 41 kV. Find the ring's radius and its total charge.