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### 56 Cards in this Set

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 movement of an object relative to another object considered to be at rest motion time rate of displacement speed speed in a particular direction velocity rate of change of velocity acceleration has only magnitude scalar quantity has both magnitude and direction vector quantity solved with addition and subtraction colinear vectors directly measured with an instrument fundamental units based from two or more fundamental units in a formule derived amount of matter present, measured with balance mass measure of the pull of gravity on an object, measured with scale, changes in location weight exists between two quantities that increase and decrease together direct proportion exists between two quantities where one increases as the other decreases inverse proportion Newton's first law of motion is also called law of intertia newton's second law of motion shows that acceleration is directly proportional to force acceleration is inversely proportional to mass unbalanced focres result in the ? of an object acceleration the period of a pendulum is directly proportional to its length "normal" means t force that has the same effect as two or more component forces acting together resultant product of a force and the lenght of a torgue arm torque when the net force on an object is zero equilibrium sum of potential and kinetic energy in a system is always constant product of mass times velocity momentum force times displacement work rate of doing work power ratio of output work to the input work efficiency temp. at which liquid changes to solid midpoint when a solid directly changes to a vapor sublimation force of attraction between molecules cohesion ability to be drawn into thin wires ductility spreading of a wave at the edge of a barrier diffraction change in direction of a wave at a boundary as it enters a new medium refraction bouncing of a wave off a barrier reflection what kind of interference occurs at the junction of two crests constructive angle of incidence equals the angle of reflection horizontal distance btween two points on a wave that is in phase wavelength number of vibrations per second frequency maximum distance of a wave from the rest position amplitude amplitude indicates a wave's: energy type of wave with crests and troughs transverse type of waves with refractions and compressions logitudinal an object that produces its own light is luminous an object that reflects light is illuminated sounds is an example of a longitudinal wave a detected change in frequency due to the motion of the source or the motion of the listener doppler effect characteristic of sound related to frequency piton because there are no wave particles for the sound waves to vibrate, sound will not travel through what? a vacuum causing an object to vibrate at its natural frequency without touching it ressonance when a ray travels at an angle from a medium of higher optical density to a medium of lower optical density, it will bend ____ from the normal away instrument used to detect a static charge electroscope materials that do not transfer electrons easilty becasue they have few free electrons to give up insulators rapid release of static charge spark discharge has two conducting plates and is used to store an electric charge capacitator a current that flows in two directions and is produced by a generator attrenity production of an electric current in the presence of light is the miloelectric effect