A copper cannot be changed into magnet

12. a body is a particular amount of matter. it can be a solid, liquid or gas. it can be described as existing in a. size and shape. b. motion and force c. time and space. d. location and movement.

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?