Jack pulls a sled across a level field by exerting a force of 110 n at an angle of 30 with the ground. what are the parallel and perpendicular components, respectively, of this force with respect to the ground?

Which energy transformation occurs in the core of a nuclear reactor? nuclear energy mechanical energy nuclear energy - thermal energy thermal energy -- nuclear energy mechanical energy - nuclear energy

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.

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?