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| Steps of the Scientific Method |
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Problem
Hypothesis
Experiment
Observations
Conclusion |
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| Information objectively perceived. (How much, long, many, big?) |
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Exclude trailing zeros without decimal
Exclude leading zeros
Addition/Subtraction:
least significant digit |
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1.Atoms experience a short ranged attraction that operates effectively over distances of only one or two atomic diameters. The attraction/bonding of atoms create water and other substances. It keeps our nose to our face
2.When atoms and molecules are far apart, they barely interact. Reason we can walk through air and pour liquid
3. When atoms and molecules get very close they repel powerfully. Allows you to stand on floor. Ordinary matter isn't dense
4. Atoms and molecules are always moving. Permeation |
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| Description of a relationship in Nature that manifests itself in reoccurring patterns or events |
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| explanation or phenomena in terms of more basic natural processes and relationships |
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| make up neutrons and protons, |
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| negative, made up of leptons |
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Fundamental Force
Gravitational |
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Definition
| keeps you in the atmosphere and seas fixed to surface of the planet. Wekeast of all forces, least selective and acts between all particles |
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Fundamental Force
Electromagnetic |
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Definition
gives rise to short-range interatomic attraction
generated from friction and drag, can be attractive or repulsive, keeps things from being crushed by gravity |
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binds quarks together to form neutrons and protons, binds together the form nuclei.
Extremely powerful exceedingly short-range force whose influence extends only a few times the diameter of a proton.
Prevents things from turning into dust |
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Definition
transforms one type of quark into another. Protons into neutrons
Responsible for the slow decay of some radioactive atoms |
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| quantity-of-matter, how much matter there is in a material object, fixed property |
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| downward force exerted on an object at the surface of the earth |
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Term
| How was the meter defined? |
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Definition
one ten-millionth of the distance from the North Pole to the Equator along the meridean line passing through Paris
Distance between two lines inscribed in a bar of platinum-iridium alloy
Distance a photon will travel in 1/2997924583 s |
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Term
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Definition
Length m
mass kg
Time s
Force N
Weight J
Current Amp
Temp K
Amount mol
Luminous Intensity col (candle) |
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| Inversely Proportional Graph |
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Definition
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| Directly Proportional Graph |
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Definition
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| Directly Proportional by square Graph |
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Definition
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| the describes motion with no concern of what is causing the motion |
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rate of change in position
v=d/t |
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rate of change of position and direction
V=s/t
s= displacement |
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Definition
Rate of change of velocity
m/s^2
a=v-vo/t |
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Definition
quantities that tell both magnitude and direction
Velocity |
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quantities that tell magnitude only
Speed |
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Definition
Slope = speed
flat line is not moving
diagonal is constant speed
curve up is accelerating
curve down to flat is decelerating |
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Definition
| total length traveled over entire trip from start |
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| distance from start point to end point |
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| total distance travled divided by total time |
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Definition
COMPONENTS
1. Draw original vector
2. Sketch components
3. Find Angle
4. Find components using sin and cos
5. Label drawing |
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Definition
change speed
change direction |
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Definition
different laws in heaven than on earth
motion on earth is linear
motion in heaven is curved
sun and planets move around the earth
motion can be natural or violent
body can only continue moving if a force is applied to it
force is proportionate to velocity
heavy objects fall faster than light objects |
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Definition
| proposed controversial heliocentric universe (sun is in the middle) |
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Supported heliocentric model
heavy and light objects fall at same rate if no air resistance is present
only when friction is present is a force needed to keep an object moving |
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Definition
| object at rest stend to stay at rest and an object in motion tends to stay in motion |
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Definition
Acceleration produced by Fnet on an object is...
Directly proportional to the magnitude of Fnet
In the same direction of Fnet
Inversely proportional to the mass of the object
F=ma |
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Definition
Forces occur in equal and opposite pairs
Punching someone |
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objects tendency to resist change in motion
More mass= more inertia |
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| resultant of all forces acting on an object |
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Definition
When net force acting on an object equals zero
Don;t change velocities
Sum of horizontal forces and sum of vertical forces both equal zero |
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force that opposes motion between surfaces that are touching
always opposite direction of motion
measured by mu |
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| slows down motion, always smaller than static |
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type of static friction
car tires have high kinetic friction but low rolling friction\at point of contact with ground, car tire isn't moving along the ground |
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Constant velocity when no force is applied
acceleration when force is increasing |
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