It is a scalar quantity, which is used to measure the quantity of two dimensional geometric plane figures where length and breadth is taken into consideration.Since area is the two-dimensional plane, the basic unit used to measure is \(" mm^2" (Length \times Length)\). The rule of conversion is " multiplication is done for converting higher units to smaller units ,similarly when converting smaller units to higher units division is carried out " Conversion Table For Measurement Of Length The above table gives the information about the basic unit 'METER' and its prefixes and how they are converted to smaller and larger units depending on the measurement of specimen to be measured Further, according to the length of the specimen units like millimeter, centimeter, decimeter, dekameter, hecto meter and kilometer are respectively used. The basic unit of measuring length in the International system of units is "METER". Here is a number line with the two prefixes in problem sixteen marked:Ĭompute the absolute, exponential distance between two given prefixes:It is a one dimensional scalar quantity used to measure a line segment. Repeat: you will use the proper exponential value (like 10 5) in a solution to a problem you will NEVER use just the exponent (the 5) in a solution. The 5 is only used in descriptions about how to determine the distance. In other words, 10 5 is used in the solution to the problem the 5 by itself will never be used. In the problems to follow, the exponential form will be the one used. Done as an exponent, the absolute exponential distance between kilo- and centi- is 10 5. The absolute exponential distance between 3 and -2 is 5, not 1. ![]() For example, someone might mentally do the distance between kilo and centi by comparing the exponents of positive 3 and negative 2 and getting one. What you should do is compare the two exponents as if they were placed on a number line made of exponents and the compute the absolute exponential distance between them. The distance between kilo and centi is 10 5. For example, the absolute distance between milli and centi is 10 1. The skill I'm talking about is figuring out the absolute, exponential distance between two prefixes. It is an important skill that goes somewhat untaught, so I've decided to address it. It seems that everybody just assumes students pick it up somewhere in a math class. The reason is that this particular skill isn't really mentioned by chemistry (or physics) teachers. This next set of problems deserves some comment. Problems concerning the exponential distance between two prefixes This makes it a prime target for teachers to test. Given either the name or the symbol of the prefix, give the other:Ī word to the wise: deca- (symbol = da) is a little used unit prefix. Here are only some possible problems (of many): Problems could give any one and ask for one or both of the others. ![]() There are three items - name, symbol, and size - that must be known. Notice anything? And, no, I did not copy them. For example, centigram means we are count in steps of one one-hundredth of a gram, μg means we count by millionths of a gram.įor another presentation of these prefixes, please go here. ![]() These skills will be necessary in order to correctly convert one metric unit to another.Ī metric prefix is a modifier on the root word and it tells us the unit of measure. Note for the future: you will need to determine which of two prefixes represents a bigger amount AND you will also need to determine the exponential "distance" between two prefixes. There is even someone selling an e-book for metric prefix flashcards. Here is a search for metric prefix flashcards. In order to properly convert from one metric unit to another, you must have the prefixes memorized. A brief discussion of the basic metric units.
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