1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Accuracy & Error

  1. Nov 22, 2007 #1
    [SOLVED] Accuracy & Error

    Hi Everyone,

    Just a quick question regarding Accuracy & Error.

    We have been doing this for a little while (University) and I'm slightly confused with one of the problems.

    I am able to do something like this and achieve the working and answer:

    Code (Text):
    (7.3 ± 0.4) x (1.2 ± 0.6)    /     (5.4 ± 1.3)

    ie: 1.3 * 5.4 = 7.02

    0.6/1.3 = 0.46
    1.3/5.4 = 0.24

    Square root of: 0.46^2 + 0.24^2 = 0.52

    = 0.52 * 7.02 = 3.65 to take it out of fractional error form

    = (7 ± 3.6) / (5.4 ± 1.3)

    = 7/5.4 = 1.29

    3.6/7 = 0.51

    1.3/5.4 = 0.24

    = square root of: 0.51^2 + 0.24^2 = 0.56

    = 0.56 * 1.29= 0.7 (to take it out of fractional error form)

    ans = (1.3 ± 0.7) * 10^4 etc
     
    However, when presented with this, I am not sure how to approach it:

    1. The problem statement, all variables and given/known data
    Code (Text):
    (102 ± 32)^5
    2. The attempt at a solution
    I'm just not sure what to do to it... The answer is:
    Code (Text):
     (1.1 ± 0.8) * 10^10
    Just not sure how to get there, any help?


    EDIT: SOLVED - Was being silly!
    Thanks
     
    Last edited: Nov 22, 2007
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?