What can we say about machines and engines? A. Friction increases fuel efficiency
B. There is no friction
C. the proccess of overcoming friction uses valuable fuels
D. friction is unlikely

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.

What 2 properties are used to classify radiation

If one object has a large redshift and another object has a small redshift, what can we conclude about these two objects?