Suppose you are looking at a scene that has mountains near the ocean. where do u think the crust should be the thickest?

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.

The dominant wavelength of energy emitted by the sun is

How many astronauts have walked on the moon?