Which statement accurately describes current electricity? A. Positively charged particles build up on an object's surface. B. Negatively charged particles build up on an object's surface. C. Positively charged particles move from one point to another. D. Negatively charged particles move from one point to another.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane