D) The speed of a wave slows as it travels at different speed in different media.
Answer:
When the Earth and sun are perfectly lined up, then it will happen. They can tell when it's going to happen.
Explanation:
This is why it only happens in some places. Some days it's not sunny out, so it's not going to happen.
multiply grav pull by mass of astro maybe with a calculator
Construction, like building a home/building, digging, like in a mine, and opening a soda can, where the part to open is a lever.
Force of gravity. Hope this is correct good luck!!
