Why does end correction (acoustics) depend on the radius of the pipe?

if the pipe is too small the noise is too high...if the pipe is too big the noise is too low

iron would move it is magnetic there is a mag field around the current in the wire

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.