Energy Conversion (1 pt). For each of the following processes, describe what kin
ID: 1337460 • Letter: E
Question
Energy Conversion (1 pt). For each of the following processes, describe what kind of energy is being converted into what other kind(s). Valid forms of energy for the purpose of this question are “kinetic energy of (object),” “gravitational potential energy,” “elastic potential energy of (object),” or “internal energy of (object).” There may be more than one conversion involved, so your answer should be a kind of narration of the energy conversion(s).
For example, if the process is, “A girl skating on rollerblades skids to a halt,” then your answer should read something like:
The kinetic energy of the girl is converted into internal energy of the skates and of the road.
You drop a book, and it falls to the floor and lands with a thud.
You drop a rubber ball, which hits the floor and rebounds back up to your hand. (Hint: Think about what happens to the ball while it is in contact with the floor.)
You pour milk from a carton into a drinking glass.
You pick up a heavy box from the floor and lift it onto a table.
You stretch a rubber band between your thumb and forefinger and release the rubber
band. The rubber band shoots straight up into the air, falls back down, and lands motionless on the ground.
Explanation / Answer
1) You drop a book, and it falls to the floor and lands with a thud.
The gravtational potential energy of the book is converted to the kinetic energy when it hits the floor and this energy and later to internal energy of the book and the floor.
2) You drop a rubber ball, which hits the floor and rebounds back up to your hand.
The gravitational potential energy of the rubber ball is converted to the kinetic energy and after hitting the floor its converted to elastic potential energy.
3) You pour milk from a carton into a drinking glass.
The gravitational potential energy is converted to kinetic energy
4) You pick up a heavy box from the floor and lift it onto a table
The internal energy of the person is equal to the change in gravitational energy of hte box.
5) You stretch a rubber band between your thumb and forefinger and release the rubber band. The rubber band shoots straight up into the air, falls back down, and lands motionless on the ground.
The elastic potential energy is converted to the kinetic energy of the band plus the gravitational potential energy and finally internal energy of the band and the ground.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.