Apiece of wood is floating in a tub of water. a second piece of wood rest on top of the first piece; it does not touch the water. if the second piece is removed from the first and placed in the water, what happens to the water level in the tub

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic