5.55 A person swings a small stone in a sling shot attached to a string over their head in a horizontal,
circular path. The piece of string is 2 meters long and the stone makes 5 revolutions per second.
What is the stone's centripetal acceleration?

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

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