4. Which of the following are examples of potential energy? * O A. a picture hanging on a wall and a parked car
O B. a clock hand moving and a leaf in a tree
O C. pushing a swing and vase on a table
D. None of the above

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

What is a carrier wave and how does it affect what you hear on the radio