Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill? a kinetic energy decreases and potential energy increases. b kinetic energy increases and potential energy decreases. c both potential and kinetic energy decrease. d both potential and kinetic energy increase.

Why should seat belts not be mandatory quick plz

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.