Abook, that has a mass of 0.5 grams, is pushed across a table with a force of 20 newtons. what is the acceleration of the book?

Why don't you see your reflection in water with waves or repples

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

In science and physics what is the standard unit of measure for speed?