Unformatted text preview: acidic, and more than 7 (714) is alkaline with the greater the number the more alkaline.) Richter Scale : = P A R log where R is the Richter scale measurement, A is the amplitude measured in micrometers, and P is the period or the time of one oscillation in seconds on the surface of the earth. Decibel Voltage Gain: 20log o I E db E = where db is the decibel voltage gain, E is the output voltage of a device and I E is the input voltage. Decibel Level of Sound: 10log I D I = where D is the decibel level, I is the intensity level, and I is the threshold sound intensity (a very faint sound). Population Doubling Time: ln 2 t r = where t is the time for a population to double and r is the growth rate as a decimal....
View
Full Document
 Spring '08
 OwenDavis
 Formulas, pH, HalfLife, Decibel, Logarithm, Richter scale, 0 K

Click to edit the document details