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Flashcards on Work, Energy, and Power
Click on the flashcard to see the answer
What is the formula to calculate work?
Work = Force x Distance
What is the SI unit of work?
Joule
Define energy.
The ability to do work or cause a change.
What is the formula for gravitational potential energy?
Gravitational Potential Energy = mass x gravity x height
What is the SI unit of energy?
Joule
What is power?
The rate at which work is done or energy is transferred.
What is the formula for power?
Power = Work / Time
What is the SI unit of power?
Watt
State the law of conservation of energy.
Energy cannot be created or destroyed, only transferred from one form to another.
What is the formula for kinetic energy?
Kinetic Energy = 0.5 x mass x velocity^2
What is potential energy?
The energy possessed by an object due to its position or condition.
What is the formula for elastic potential energy?
Elastic Potential Energy = 0.5 x spring constant x extension^2
Define work.
A measure of the energy transferred by a force acting through a distance.
What is the formula for efficiency?
Efficiency = (Useful output energy / Input energy) x 100%
State the work-energy theorem.
The work done on an object is equal to the change in its kinetic energy.
What is the formula to calculate work?
Work = Force x Distance
What is the SI unit of work?
Joule
Define energy.
The ability to do work or cause a change.
What is the formula for gravitational potential energy?
Gravitational Potential Energy = mass x gravity x height
What is the SI unit of energy?
Joule
What is power?
The rate at which work is done or energy is transferred.
What is the formula for power?
Power = Work / Time
What is the SI unit of power?
Watt
State the law of conservation of energy.
Energy cannot be created or destroyed, only transferred from one form to another.
What is the formula for kinetic energy?
Kinetic Energy = 0.5 x mass x velocity^2
What is potential energy?
The energy possessed by an object due to its position or condition.
What is the formula for elastic potential energy?
Elastic Potential Energy = 0.5 x spring constant x extension^2
Define work.
A measure of the energy transferred by a force acting through a distance.
What is the formula for efficiency?
Efficiency = (Useful output energy / Input energy) x 100%
State the work-energy theorem.
The work done on an object is equal to the change in its kinetic energy.
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