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qutention
An experiment is a simulation of complete or part of a real scenario in a controlled environment. We come to know of various outcomes of an experiment based on the values/degree of the variables in different quantity/quality. Unless the variables are controlled, experiment can go out of hand and sometimes become a real disaster.
Velocity is a vector quantity, which means it is made up of more than one numeric value. Velocity vectors must contain information on speed and direction.
The responding variable is the one variable that changes as a result of altering the manipulating variables. In an experiment, different conditions of the responding variable can be observed, such as quantity, quality, time, distance and height. Read more: What Does "Responding Variable" Mean? | eHow.com http://www.ehow.com/facts_7190954__responding-variable_-mean_.html#ixzz1Aa8rlLQT
derived quantity
Velocity is a vector.Its magnitude is called 'speed'.
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control
If you vary only one quantity in an experiment, then the results will be related to that quantity. If you vary two or more quantities, then the results will be ambiguous; you will not know what variation is responsible for the observed result.
Quantity of what? Needs more information.
A variable is assigned to represent an unknown quantity.
Robert Milliken
Ø In chemistry, algebra can be used to calculate the quantity of a substance required in an experiment. Also, it is used to calculate the quantity of various substances formed in an experiment. Problems of Mole concept are soved on this basis only.
weighted average is an average in which each quantity to be averaged is assigned a weight. These weightings determine the relative importance of each quantity on the average.
accurate values of the quantity that you wanna measure using certain properties of it.
VARIABLE. When this variable has a fixed number assigned to it and does not change, it is called a "fixed variable".
During the chemistry experiment we had to measure the quantity of the liquids careful by using a graduated cylinder.