The weight of an object varies inversely as the square of its distance from the center of the earth. the radius of the earth is approximately 4000 miles. if a person weighs 189 pounds on earth's surface, what would this person weigh 5000 miles above the surface of earth

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

What is the role of the ocular lens?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.