# Shared Flashcard Set

## Details

Physics Final
Review
50
Physics
01/24/2012

Term
 Steps of the Scientific Method
Definition
 Problem Hypothesis Experiment Observations Conclusion
Term
 Data
Definition
 Information objectively perceived. (How much, long, many, big?)
Term
 Facts
Definition
Term
 Sig Fig Rules
Definition
 Exclude trailing zeros without decimal Exclude leading zeros   Addition/Subtraction: least significant digit
Term
 Atomic Theory
Definition
 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
Term
 Law
Definition
 Description of a relationship in Nature that manifests itself in reoccurring patterns or events
Term
 Theory
Definition
 explanation or phenomena in terms of more basic natural processes and relationships
Term
 Hypothesis
Definition
 Idea of what might be
Term
 Quark
Definition
 make up neutrons and protons,
Term
 Electron
Definition
Term
 Fundamental ForceGravitational
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
Term
 Fundamental ForceElectromagnetic
Definition
 gives rise to short-range interatomic attractiongenerated from friction and drag, can be attractive or repulsive, keeps things from being crushed by gravity
Term
 Fundamental Force
Definition
Term
 Fundamental ForceStrong
Definition
 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
Term
 Fundamental ForceWeak
Definition
 transforms one type of quark into another. Protons into neutronsResponsible for the slow decay of some radioactive atoms
Term
 Mass
Definition
 quantity-of-matter, how much matter there is in a material object, fixed property
Term
 Weight
Definition
 downward force exerted on an object at the surface of the earth
Term
 How was the meter defined?
Definition
 one ten-millionth of the distance from the North Pole to the Equator along the meridean line passing through ParisDistance between two lines inscribed in a bar of platinum-iridium alloyDistance a photon will travel in 1/2997924583 s
Term
 SI Units
Definition
 Length mmass kgTime sForce NWeight JCurrent AmpTemp KAmount molLuminous Intensity col (candle)
Term
 Inversely Proportional Graph
Definition
 [image] XY=k
Term
 Directly Proportional Graph
Definition
 [image] Xx+Yx=y
Term
 Directly Proportional by square Graph
Definition

Parabola

###### X+x=Y+x^3
Term
 Kinematics
Definition
 the describes motion with no concern of what is causing the motion
Term
 Speed
Definition
 rate of change in position v=d/t
Term
 velocity
Definition
 rate of change of position and directionV=s/ts= displacement
Term
 Acceleration
Definition
 Rate of change of velocitym/s^2a=v-vo/t
Term
 Vector
Definition
 quantities that tell both magnitude and directionVelocity
Term
 Scalar
Definition
 quantities that tell magnitude onlySpeed
Term
 Distance time graph
Definition
 Slope = speedflat line is not movingdiagonal is constant speedcurve up is acceleratingcurve down to flat is decelerating
Term
 Distance
Definition
 total length traveled over entire trip from start
Term
 Displacement
Definition
 distance from start point to end point
Term
 average Speed
Definition
 total distance travled divided by total time
Term
 instantaneoud speed
Definition
 speed at that instant
Term
 Vector Resolution
Definition
 COMPONENTS1. Draw original vector2. Sketch components3. Find Angle4. Find components using sin and cos5. Label drawing
Term
 Ways to accelerate
Definition
 change speedchange direction
Term
 Aristotle
Definition
 different laws in heaven than on earthmotion on earth is linearmotion in heaven is curvedsun and planets move around the earthmotion can be natural or violentbody can only continue moving if a force is applied to itforce is proportionate to velocityheavy objects fall faster than light objects
Term
 Copernicus
Definition
 proposed controversial heliocentric universe (sun is in the middle)
Term
 Galileo
Definition
 Supported heliocentric modelheavy and light objects fall at same rate if no air resistance is presentonly when friction is present is a force needed to keep an object moving
Term
 Newton's 1st law
Definition
 object at rest stend to stay at rest and an object in motion tends to stay in motion
Term
 Newton's 2nd Law
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
Term
 Newton's 3rd Law
Definition
 Forces occur in equal and opposite pairsPunching someone
Term
 Inertia
Definition
 objects tendency to resist change in motionMore mass= more inertia
Term
 Net force
Definition
 resultant of all forces acting on an object
Term
 Equillibrium
Definition
 When net force acting on an object equals zeroDon;t change velocitiesSum of horizontal forces and sum of vertical forces both equal zero
Term
 Friction
Definition
 force that opposes motion between surfaces that are touchingalways opposite direction of motionmeasured by mu
Term
 Static friction
Definition
 prevents motion
Term
 Kinetic friction
Definition
 slows down motion, always smaller than static
Term
 Rolling friction
Definition
 type of static frictioncar tires have high kinetic friction but low rolling friction\at point of contact with ground, car tire isn't moving along the ground
Term
 How to calculate mu
Definition
 Ffric=mu*fnorm
Term
 Force Time Graph
Definition
 Constant velocity when no force is appliedacceleration when force is increasing
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