The distance of the earth to the sun is 1.5x10^11 m and one year is 365days if the distance to the sun increased six time the initial value how long it take the earth to orbit the sun?

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

Avalue that describes how heavy an object is and is related to the force of gravity is

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.