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: Find the value of y. Did I do this problem correct?

  1. Feb 6, 2013 #1
    1. egwgfm.png

    2. Relevant equations

    3. The attempt at a solution

  2. jcsd
  3. Feb 6, 2013 #2
    What happened to all the units in line 2?
  4. Feb 6, 2013 #3
    After dividing x by a, you should have gotten rid of the units of mass so your final answer shouldn't have any.

    I converted everything to SI units and went on from there, it makes everything easier in my opinion. I'm not sure if I did it right and I probably shouldn't post my answer but I think you should have units of length^(9/2)*time^(9/2) at the end.
  5. Feb 6, 2013 #4
    I get
    length2 * time-2

    Did you raise each side to the power 3/2 instead of 2/3?
  6. Feb 6, 2013 #5
    Yes, you're right, my mistake. Now I'm getting m2/s2 with SI units.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook