A 7.0 kg mass is lifted 4.0 m above the ground. Find the change in gravitational energy.

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

Does anyone have the answers to online physics course plato course physics, semester a v3.0