Answer:
to locate places on earth
When a light wave strikes an object, it can be absorbed, reflected, or refracted by the object. All objects have a degree of reflection and absorption. ... In the natural world, light can also be transmitted by an object. That is, light can pass through an object with no effect (an x-ray, for example).
PE = mass * height * 9.81
PE = 142 * 25 * 9.81
PE = 34825.5 J
