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Physical Science Chp 3
Important Terms and Ideas of Physcial Science Chp 3
22
Science
Undergraduate 1
09/17/2012

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Term
Work
Definition
change force causes,
Term
Joule
Definition
SI unit for work
Term
Power
Definition
rate which work is being done
Term
Watt (W)
Definition
SI unit for Power
Term
Energy
Definition
ability of something to do work
Term
Kinetic Energy
Definition
energy of motion
Term
Potential Energy
Definition
energy of position
Term
Rest Energy
Definition
mass times the speed of light squared
Term
Conservatoin of Energy
Definition
cannot be created or destroyed, but can be changed from one form to another
Term
Law of Conservatoin of Energy
Definition
cannot be created or destroyed, but can change from one form to another
Term
Linear Momentum
Definition
object moving to continue moving in a strait line
Term
Angular Momentum
Definition
rotating to continue spinning about the same axis
Term
Conserved Momentum
Definition
remain moving until another force acts upon it...
Term
Special Theory of Relativity
Definition
lenths are shorter than when at rest, time intercals are longer, and kinetic ernergies are greater
Term
General Theory of Relativity
Definition
relates gravitation to the structure of space and time, correctly predicts that light should be subject to gravity
Term
Work Done Against Gravity
Definition
Work equals Mass times gravity times height
Term
Energy Transformations
Definition
Changing forms, body temp, exchange from Potential to Kenetic, moving, burn gas to move car, plants get it from the sun
Term
By what factor does the Kinetic energy of a car change when its speed is cut in half?
Definition
1/4
Term
Gravitational Potential Energy
Definition
mass gravity height
Term
The Nature of Heat
Definition
form of energy(transfers of energy due to a different temp)
Term
Rockets
Definition
Conservation of momentum. Mass thrown down makes rocket go up
Term
Consequences of Special Relativity
Definition
Speed of light is same for all observers
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