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: Ap Chem: dimensional Analysis

  1. May 28, 2010 #1
    1. The problem statement, all variables and given/known data[
    Average speed of helium at 25C is 1255m/s. Convert this speed to mph

    2. Relevant equations

    3. The attempt at a solution
    umm i tried to use this: 1255m/s (1mph/.477 m/s)
    thats all i have and i don;t know if I did this correct
  2. jcsd
  3. May 28, 2010 #2


    User Avatar

    Staff: Mentor

    Doesn't look bad, but I doubt your teacher will be pleased. Try longer route, based on well known conversion factors - seconds to hour, meters to mile.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook