summarize the progression of the thought about motion from the time of the ancient greeks to modern times.

What are similarities and differences between refraction, reflection, diffraction and absorption?

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

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)