Which of the four fundamental forces holds the planets in their orbits around the sun?

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

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Agust of wind pushes a beach ball with a force of 9 newtons. the ball rolls 10 meters in 3 seconds. what is the power of the wind?