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

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.