Understanding Energy: Types, Efficiency, and Calculations
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18 Terms
Energy
The capacity to do work or produce change.
Types of Energy
Ten distinct forms including kinetic and potential.
Energy Efficiency
Ratio of useful energy output to input.
Friction
Resistance causing energy loss in systems.
Air Resistance
Force opposing motion through air, causing energy waste.
Law of Conservation of Energy
Energy cannot be created or destroyed, only transformed.
Dissipate
To disperse energy, often as heat.
Work
Energy transferred when a force moves an object.
Power
Rate of doing work, measured in watts.
Calculating Work
Work = Force × Distance × cos(θ).
Calculating Power
Power = Work done / Time taken.
Input and Output of Energy
Energy entering and leaving a system, including waste.
Mechanical Energy
Sum of potential and kinetic energy in an object.
Potential Energy
Stored energy based on position or configuration.
Kinetic Energy
Energy of an object due to its motion.
spring constant
Measure of the stiffness of a spring
hookes law
the amount an object stretches(or compresses) is directly proportional to the amount of force put on the object
deformation
Change in shape or size of an object
Note 
Flashcards (23)