Lengths



Physiology 1

Exponents, Scientific Notation, and Metric System

Exponents

1,000 = 103 (thousand)

1,000,000 = 106 (million)

1,000,000,000 = 109 (billion)

1,000,000,000,000 = 1012 (trillion)

0.001 = 10-3 (one-thousandth)

0.000001 = 10-6 (one-millionth)

0.000000001 = 10-9 (one-billionth)

0.000000000001 = 10-12 (one-trillionth)

Scientific Notation

5,100 = 5.1 x 103

0.0051 = 5.1 x 10-3

2,500,000 = 2.5 x 106

0.0000025 = 2.5 x 10-6

Dimensions and Distances

one meter (m) = 39.370 inches

one inch (in) = 0.0254 meters

one centimeter (cm) = 0.3937 inches

one inch = 2.540 centimeters

centimeters = meters x 10-2

meters = centimeters x 102

millimeters (mm) = meters x 10-3

meters = millimeters x 103

millimeters = centimeters x 10-1

centimeters = millimeters x 101

microns (µm) = meters x 10-6

meters = microns x 106

nanometers (nm) = meters x 10-9

meters = nanometers x 109

angstroms (Ǻ) = meters x 10-10

meters = angstroms x 1010

Weights

one pound (lb) = 16 ounces

ounces (oz) = pounds / 16

kilogram (kg) = 2.205 pounds

one pound = 0.4536 kilograms

grams (g) = kilograms x 10-3

kilograms = grams x 103

milligrams (mg) = grams x 10-3

grams = milligrams x 103

micrograms (µg) = grams x 10-6

grams = micrograms x 106

nanograms (ng) = grams x 10-9

grams = nanograms x 109

picograms (pg) = grams x 10-12

grams = picograms x 1012

Volumes

one gallon (gal) = 4 quarts (qt) = 8 pints (p) = 16 cups (c)

one cup =16 tablespoons (tbsp) = 48 teaspoons (tsp)

one gallon = 8.336 pounds of water

one quart = 2.084 pounds of water

one liter (l) = 0.2642 gallons

one gallon = 3.785 liters

one liter = 1.057 quarts

one quart = 0.9464 liters

milliliters (ml) = liters x 10-3

liters = milliliters x 103

microliters (µl) = liters x 10-6

liters = microliters x 106

Temperatures

oF = degrees Fahrenheit; oC = degrees Celsius; oK = degrees Kelvin

oF = (oC x 1.8) + 32

oC = (oF - 32) x 5/9

oK = oC + 273.15

oC = oK - 273.15

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