Details Title: Chapter One Vocab Description: Quiz Total Flash Cards: 29 Created: 09/20/2009 12:07:23		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: 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