Consider the gravitional interactions among earth, the sun, and the moon.Does this constitute system? If so, what are its boundaries? Does it open or closed? What forms of energy involved?
Yes, the gravitational interactions among earth, the sun, and the moon constitute a system. The boundaries of this system would encompass the entire solar system, as the gravitational interactions between these bodies extend throughout the system.
This system is considered open because energy and matter can be exchanged with other systems, such as through solar radiation or meteorites and comets entering the system.
The forms of energy involved in the gravitational interactions among earth, the sun, and the moon include gravitational potential energy, kinetic energy, and electromagnetic energy (such as light and heat from the sun). These forms of energy play a crucial role in maintaining the stable orbits of the earth and the other celestial bodies in the solar system.