Acharge of 7.2 × 10-5 c is placed in an electric field with a strength of 4.8 × 105. if the electric potential energy of the charge is 75 j, what is the distance between the charge and the source of the electric field? round your answer to the nearest tenth.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.