1 3 Unit Conversions And The Metric System General Phys Chad covers the unit conversions involving the metric system in this lesson including all the major metric prefixes from atto to exa. it is usually necessar. More lessons: mathandscience twitter: twitter jasongibsonmath in this lesson, we will introduce the metric system and the si syste.
The Metric System And Si Units In Physics 1 1 3 Youtube The conversion factors we need are 1 kg = 10 3 g 1 kg = 10 3 g and 1 cm = 10 −2 m. 1 cm = 10 −2 m. however, we are dealing with cubic centimeters (cm 3 = cm × cm × cm), (cm 3 = cm × cm × cm), so we have to use the second conversion factor three times (that is, we need to cube it). Yet the standard metric unit of length is the meter. so, the metric system includes many prefixes that can be attached to a unit. each prefix is based on factors of 10 (10, 100, 1,000, etc., as well as 0.1, 0.01, 0.001, etc.). table 1.2 gives the metric prefixes and symbols used to denote the different various factors of 10 in the metric system. 7. use your weight in pounds (while standing on the surface of the earth) to calculate your mass in kilograms and in grams. (1 kg weighs approx. 2.205 lb on the surface of the earth) this is a useful thing to know, since almost every other country in the world uses kilograms! 8. a. With the metric system there is no need to invent new units for particular applications. the term order of magnitude refers to the scale of a value expressed in the metric system. each power of 1 0 in the metric system represents a different order of magnitude. for example, 10 1, 10 2, 10 3, and so forth are all different orders of magnitude.
Cheat Sheet On How To Use The Metric System 7. use your weight in pounds (while standing on the surface of the earth) to calculate your mass in kilograms and in grams. (1 kg weighs approx. 2.205 lb on the surface of the earth) this is a useful thing to know, since almost every other country in the world uses kilograms! 8. a. With the metric system there is no need to invent new units for particular applications. the term order of magnitude refers to the scale of a value expressed in the metric system. each power of 1 0 in the metric system represents a different order of magnitude. for example, 10 1, 10 2, 10 3, and so forth are all different orders of magnitude. Now we can set up our unit conversion. we write the units we have and then multiply them by the conversion factor so the units cancel out, as shown: 80 m × 1 km 1000 m = 0.080 km. (1.4.1) (1.4.1) 80 m × 1 k m 1000 m = 0.080 k m. note that the unwanted meter unit cancels, leaving only the desired kilometer unit. 6. a. convert the speed 1.0000 m s [meter second] to mi h [miles hour], expressing your answer to 5 significant figures. (useful info: 1 mile = 5280 feet exactly, and 1 inch = 2.54 cm exactly.) b. perform the following unit conversions: (when converting from one prefix to another, convert to the base unit first.
Unit Conversions Dimensional Analysis Complete Guide With Examples Now we can set up our unit conversion. we write the units we have and then multiply them by the conversion factor so the units cancel out, as shown: 80 m × 1 km 1000 m = 0.080 km. (1.4.1) (1.4.1) 80 m × 1 k m 1000 m = 0.080 k m. note that the unwanted meter unit cancels, leaving only the desired kilometer unit. 6. a. convert the speed 1.0000 m s [meter second] to mi h [miles hour], expressing your answer to 5 significant figures. (useful info: 1 mile = 5280 feet exactly, and 1 inch = 2.54 cm exactly.) b. perform the following unit conversions: (when converting from one prefix to another, convert to the base unit first.
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