Mrs garcia traveled 15 km in 1 hour. what was her average velocity in km/s?

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?