ASAP!!! What is the purpose of a heavy stream appliance?

provides breathable air from attached air tanks

focuses the fluid flow into a heavier stream

moves or removes smoke and gases from buildings and passageways

removes citizens from burning or hazardous structures

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.