# Shared Flashcard Set

## Details

Chapter One Vocab
Quiz
29
Physics
09/20/2009

## Additional Physics Flashcards

Term
 absolute erros
Definition
 the diference between an experimental value and the accepted value of a measured quantity
Term
 accepted value
Definition
 the most probable value for a measured quantity, which is usually published in reference books
Term
 accurate
Definition
 describes a measurement that is the same or very close to the accepted value
Term
 constant prportion
Definition
 the relationship that exists between two quantities when an increase in one causes no change in the other
Term
 dependent variable
Definition
 thw quantity that changes in an experiment as a result of changes made by the experimenter
Term
 derived unit
Definition
 a combination of two or more fundamental units used to simplify notation
Term
 direct squared proportion
Definition
 the relationship that exists between two quantities in which an increase in one quantity causes an increase in the other or a decrease in one quantity causes a decrease in the other
Term
 experimental value
Definition
 measurement made duiring laboratory work which may stand alone or be incorporated into one or more formulas to yield a value for a physical quantity
Term
 extrapolation
Definition
 the estension of a graphed line beyond the region in which data was taken
Term
 force
Definition
 a push or pull on mas; a vector quantity
Term
 fundamental unit
Definition
 one of a set of units in wchi all quantities measured by physicists can be expressed
Term
 independent variable
Definition
 the quantity that the experimenter changes in an experiment
Term
 indirect squared proportion
Definition
 the relationship that exists between two quantities in which an increase in one causes a squared decrease in the other
Term
 inversely proportional
Definition
 applies to the relationship between two quantities in which an increase in one quantity causes a decrease in the other or a decrease in one quantity causes an increase in the other
Term
 line of best fit
Definition
 a straight or curved line on a graph which approximates the relationship among a set of data points
Term
 mass
Definition
 the amount of matter contained in an object
Term
 mean
Definition
 the average of X a set of N measurements, where Xi is the individual measurement and Fi is the frecuency of measurement   X= m            Σ XiFi i=1           __________           Σ Fi
Term
 percent error
Definition
 a measure of the reliability of an experimental result calculated by dividing the absolute error by the accepted value and multiplying the quotient by 100
Term
 precise
Definition
 describes several measurements taken of the same event that are nearly identical
Term
 range
Definition
 the horizontal distance traveled by a projectile
Term
 scalar
Definition
 a quantity that has magnitude only, with no direction specified
Term
 scientific notation
Definition
 a way of expressing quantities which consists of a number equal to or greater than one and less than ten followed by a multiplication sign and the base ten raised to some integral power
Term
 SI system
Definition
 (Système International) provides standardized units for scientifict notations
Term
 significant figures
Definition
 the digits in a measured quantity that are known with certainty plus the one digit whos value has been estimated
Term
 slope
Definition
 the inclination of a graphed line, determined as the ratio Δy/Δx for any two points on the line
Term
 standard deviation
Definition
 the square root of the variance of the set of data
Term
 unit
Definition
 a standard quantity with which other similar quantities can be compared
Term
 variance
Definition
 the sum of the squares of the difference of the measurements in a set of data from the mean of the set, divided by the number of measurments
Term
 vector
Definition
 a quantity that has both magnitude and direction, often shown graphically as an arrow with definite length and direction
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