1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Logarithmic Functions

  1. Jul 15, 2007 #1
    How many times more intense is the ground movement of an earthquake of magnitude 5 as compared with a magnitude of 3? Using M = log A.

  2. jcsd
  3. Jul 15, 2007 #2
    M2= 5*m1 => A2 =10^5*a1
  4. Jul 15, 2007 #3


    User Avatar
    Science Advisor

    huyen vyvy should not have answered this question since grant369 did not even attempt to do it himself. Fortunately, the answer huyen vyvy gives is wrong!

    grant369, at least TRY! As huyen vyvy did, call the the intensity of the first earhquake A1. Your formula says log A1= 5. What is A1? Call the intensity of the second earthquake A2. You formula says log A2= 3. What is A2? A1 is how many times larger than A2?
  5. Jul 15, 2007 #4
    oops my bad, i didn't read the question carefully enough.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook