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Significgant Figues Essay

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Below is an essay on "Significgant Figues" from Anti Essays, your source for research papers, essays, and term paper examples.

sigfig

Rules for counting sig figs
  1. All non-zero integers are always significant.
  2. zeros:
  * Leading zeros: Zeros that precede all the non-zero digits.   These are not significant   They are simply space fillers to indicate the position of the decimal point.
                                      * examples:   0.0025 (2) 0.00011 (2)
                                      * 0.000378 (3) 0.00000008 (1)
                                      *
  * In-between zeros:   Zeros which are between two non-zero digits.   These are always significant, because they are just as important as the non-zero digits.

exp:   1.008 (4) 2,037.6 (5)
10,091 (5) 900,004 (6)

  * trailing zeros:   Zeros at the right end of a number.   These zeros are significant only if the number contains a decimal point.

exp:       100   (1) 100.   (3)
340   (2) 560.0 (4)

exp: how many sig figs do each of the following numbers have?
  * 3.007 (4) 0.0089 (2)
  * 10,030 (4) 0.00430 (3)

calculations and sig figs:
addition and subtraction -
the answer is limited by the value with the most uncertainty
(the number with the smallest number of decimal places)
(what measurement was taken with the lousiest ruler?)
137.24 cm
+10.3   cm <---- this measurement was taken with the lousiest ruler
147.54cm   = 147.5cm

1002.4609 g
+     6.339   g <---- least precision means greater uncertainty
1008.7999 g = 1008.800 g  

multiplication and division
The number of sig figs in the result is the same as that in the measurement with the smallest number of sig figs.
  * plug this into your calculator:   103.0/20.5   =   5.0243902
  * did your calculator suddenly make this measurement more precise?   NO!
  * you must round off to the correct # of sig figs.

rounding:
  * if last # is >5, round up
  * if last # is <5, round down
  * previous problem: 103.0/20.5   = 5.02

exp:  
  * 3.420 x 0.0069 = .023598 = 0.024
  *...

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"Significgant Figues". Anti Essays. 12 Dec. 2018

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Significgant Figues. Anti Essays. Retrieved December 12, 2018, from the World Wide Web: http://parimatchstavki7.com/free-essays/Significgant-Figues-508354.html