What is the difference between work done by the gravitational force on descending and ascending objects?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

The results of huy's eye exam show that he is nearsighted. which explanation should huy expect to hear? "you need convex lenses to shorten the distance that light takes to focus in your eyes." "you need concave lenses to shorten the distance that light takes to focus in your eyes." "you need convex lenses to lengthen the distance that light takes to focus in your eyes." "you need concave lenses to lengthen the distance that light takes to focus in your eyes."