Arectangular pipe, running parallel to the z-axis (from -oo to +oo), has three grounded metal sides, at y = 0, y-a, and x-0. the fourth side, at x - b, is maintained at a specified potential vo(y)

this a false

explanation:

gets less

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be