Energy, Work, Power Flashcards
Work
physical effects of external force
Product of force and displacement
Work
Energy
ability of bodies to do job
Other units of Energy
Calorie
Frigorie
Kilowatt-hour
Erg
Foot-pound
What are the types of energy?
Thermal Energy
Electrical Energy
Mechanical Energy
Nuclear Energy
Chemical Energy
Radiant Energy
Conservation of energy
Energy cannot be created or destroyed
Conservation of Mechanical Energy
Sum of kinetic energy and potential energy remains constant
Conservation of Energy in Electric Circuits
Sum of the voltage differences in any loop or closed loop must be zero
Kinetic energy
The energy of a body in motion has
Potential energy
Stored energy of stationary objects
Formula for Potential Energy
Ep= m.g.h
Relationship between Energy and Work
The change in the kinetic energy of an object is equal to the net work done by the object
Power
Amount of work per unit of time
how fast job was performed
