How can we find acceleration if object is moving over verticall frictional less pulley​

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

Andra has a family history of osteoporosis. her doctor advises her to eat foods rich in calcium. which foods should she add to her diet? a. fruits, especially grapes and berries b. unsaturated fats like olive and soybean oil c. beet greens, broccoli, and cheese

When it comes to our health and the treatment of diseases, technology has had a effect. a. very negative b. neutral c. positive d. negative