What is the length of the same railroad track on a cold winter day when the temperature is 0°f

What is the kinetic energy of a 10-kg bicycle moving at 10 m/s

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.