Please help y’all Potential for 3 charges

Referring to the diagram, Q1 = 7.00uc, Q2 = -7.00uC, Q3 = 7.00uC, y = 4.00cm and x = 5.00cm. What is the potential at
Q2, due to Q1 and Q3?

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s