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!

Grain diameter

  1. Mar 12, 2008 #1
    The average grain diameter for a metal alloy was measured as a function of time at 650°C. The results are tabulated below:

    Time Grain diameter
    (min) (mm)
    30 3.9 x 10-2
    90 6.6 x 10-2

    Predict what the grain diameter would be (in mm) after 199 min at the same temperature if n=2.

    any ideA?
     
  2. jcsd
  3. Mar 12, 2008 #2

    Mapes

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Hi Sniperfx20, welcome to PF. Can you tell us what n is? It would also be helpful if you told us any equations that you've been given along with showing your attempt at the problem.
     
  4. Mar 13, 2008 #3

    Astronuc

    User Avatar

    Staff: Mentor

    Looks like a grain growth problem. One has two sizes and two times, and one is trying to use a function. Is 'n' an exponent to a growth or diffusion equation? If so, then n=2 is a quadratic function.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?