Q1. It is 140 cm from your eyes to your toes. You're standing 186 cm in front of a tall mirror. How far is it from your eyes to the image of the toes?
Q2. Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropped in the similar way from the same height. This time the ball fell for 0.650 before landing. What is the electric potential at a height of 1.20 above the ground on this planet, given that the electric potential at ground level is zero? (Air resistance can be ignored.)