Work, Power, And Energy Flashcards
How do you find Kinetic Energy?
1/2• mass• velocity squared = KE
How do you find Potential Energy?
Mass•gravity•height=PE
What does the law of conservation of energy state?
Energy cannot be created or destroyed, it can only be transformed from one form to another but the amount never changes
What does the work energy theorem state?
That work is congruent to the change in kinetic energy
How do you calculate work?
Work= force • distance • cos theta
Define potential energy
The stored energy in an object based on its position
How do you find gravitational potential energy?
PEgrav= mass • gravity • height
What is mechanical energy?
The energy an object has due to its mechanical position
How do you find mechanical energy?
PE + KE = ME
Define kinetic energy
The energy of motion measured in joules
Define power
The rate at which work is done
How do you calculate power?
P = Work / time
What is a caloriemeter?
Heat that cannot enter or escape and has a total energy that cannot change congruent to 0
What does the kinetic molecular theory state?
Molecules that make up matter are always in constant random action
When considering high and low temps, particles in which move faster?
High
Define thermal energy
The energy possessed by a substance due to the movement of its atoms or molecules
How do you calculate the change in energy in specific heat?
The change in energy = specific heat • mass • the change in temp
How do you find final temp?
Tf = Ti + the change in temp
How do you find the change in heat in a phase change?
Mass • latent heat= change in H
What are the three types of heat transfer?
Conduction, convection, and radiation
In a heat transfer, explain the process of radiation
Orange white color and its when warm objects lose energy by radiating
In a heat transfer, explain the process of conduction
Transfer of heat without moving only wiggling
In a heat transfer, explain the process of convection
Heat moves to cold areas
