Chapter 13 Flashcards
Energy
The ability to do work or cause change
Equation for power
Energy transferred over time
Power
The rate at which work is done
What are the two kind ls of energy?
Kinetic and potential
Kinetic energy
The energy an object has due to its motion
Equation for kinetic energy
One half times mass times velocity squared
Potential energy
Stored energy resulting from the position or shape of the object
Gravitational potential energy
Potential energy related to a objects height
Equation for gravitational potential energy
Weight times height
Equation for work
Force times distance
Elastic potential energy
The potential energy associated with objects that can be stretched or compressed
Mechanical energy
The energy associated with the position and motion of the object
Equation for mechanical energy
Potential energy plus kinetic energy
What are the five types of energy associated with particles of objects
Thermal energy Electrical energy Chemical energy Nuclear energy Electromagnetic energy
Thermal energy
The total potential and kinetic energies of the particles of an object
Electrical energy
The energy of electric charges
Chemical energy
Potential energy stored in chemical bonds
Nuclear energy
A type of potential energy stored in the nucleus of an atom
Electromagnetic energy
Energy that travels in waves
Energy transformation
A change from one force of energy to another
There are single and multiple transformations
What is the most common energy transformation
The transformation between potential energy and kinetic energy
Law of conservation of energy
When one form of energy is transformed to another no energy is created or destroyed
The total amount of energy is the same before and after any transformation
What happens when a moving object experiences friction?
Some of its kinetic energy is transformed into thermal energy
Matter
Anything that has mass and takes up space
