(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 5 X 109 kg and its center of mass is 28.0 m above the surrounding ground? J (b) What is the ratio of this energy to the daily food intake of a person (1.2 X 107 J)?

(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 5 X 109 kg and its center of mass is 28.0 m above the surrounding ground? J (b) What is the ratio of this energy to the daily food intake of a person (1.2 X 107 J)?