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35 Cards in this Set
- Front
- Back
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RELATIVE MOTION |
Two objects moving at different speeds or in different directions |
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GALILEAN RELATIVITY |
Straightforward, intuitive, balls on trains |
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THE PRINCIPLE OF RELATIVITY |
Every non accelerated observer observes the same laws of nature. |
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THE CONSTANCY OF THE SPEED OF LIGHT |
The speed of light in an empty space is the same for all nonaccelerated observers |
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Relativity of Time |
Speed is intimately tied to space and time, constancy suggests GALILEAN can't work |
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LIGHT CLOCK |
Reflection of beam of light between two mirrors that takes one second |
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TIME TRAVEL |
Can travel in time by going .999c the speed of light (200/22.4) |
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RELATIVITY OF SPACE |
Since time is relative, space must also be relative |
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RELATIVITY OF MASS |
An objects mass increases with its speed due to inertia |
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REST MASS |
The mass of an object when in a frame of reference at rest |
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CHANGE IN MASS = |
Change in energy ÷ square of light speed |
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SPEED OF LIGHT |
C= 3x10^8 m/s |
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ELECTRIC CHARGE |
An electrified object |
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ELECTRIC FORCE |
Stronger than gravity, acts between opposing or similair charged objects |
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ELECTRIC CURRENTS |
The force moving between two charged objects |
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ELECTRIC FORCE = |
((Charge of first)x (charge of second))÷square of the distance (Q1xQ2)÷d^2 |
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PLANETARY ATOMIC # |
Number of protons in the atom |
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PLANETARY NUCLEUS |
Center, surrounded by electrons made up of protons and neutrons |
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ION |
Atom with excess or deficiency of electrons |
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VOLTAGE |
Measure of amount of energy it gives to each electron |
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RESISTANCE |
When the flow of current is reduced |
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OHMS LAW |
Voltage= current x resistance V=IR |
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MAGNETIC FORCE LAW |
Charged objects exert/feel extra force aside from electric when at rest |
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FARADAY LAW |
A changing magnetic field creates an electric field |
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WAVE |
Disturbance that travels through a medium, energy travels but not matter |
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WAVELENGTH |
The distance from any point along the wave to a similair point |
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FREQUENCY |
Number of vibrations per second |
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WAVESPEED |
Speed at which the disturbance moves |
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AMPLITUDE |
Maximum height or depth |
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CONSTRUCTIVE INTERFERENCE |
Two equal waves of the same orientation interfere and reinforce |
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DESTRUCTIVE INTERFERENCE |
Two equal waves of different orientation interfere and cancel out |
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DOUBLE SLIT EXPERIMENT |
Light is a wave |
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ELECTROMAGNETIC SPECTRUM |
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SOLAR RADIATION |
Visible, infrared, and ultraviolet spectrum |
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OZONE DEPLETION |
Caused by cholorofluorocarbons |
