Someone is listening to a singer who is standing on a stage. The singer uses a set of speakers to broadcast her voice in all directions. The person listening cannot hear her very well, so he decides to walk closer to the podium. If his final distance to the podium is only half of his initial distance, what will be the final intensity of the singer's voice that the person hears compared to the initial intensity that he hears

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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.