Corey is riding his bike from Walmart, which is 650 meters from the school, to the movie theater, which is 450 m from the school. If this ride takes Corey 900 seconds, what was his average velocity in meters per second? The school is the reference
point. 

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

What is the role of lenses in microscopy?

What is the major limitation to the light microscope?