Results 1 to 5 of 5

Math Help - how to find the thickness and/or the layers of atom that an aluminum paper has?

  1. #1
    Newbie
    Joined
    Jul 2009
    Posts
    19

    how to find the thickness and/or the layers of atom that an aluminum paper has?

    how to find the thickness and/or the layers of atom that an aluminum paper has.

    Thank you In advance
    Last edited by mr fantastic; October 9th 2009 at 09:06 PM. Reason: Added title into main body of post.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1
    Quote Originally Posted by Julian.Ignacio View Post
    Thank you In advance
    Do you actually have a problem in front of you?

    The usual way to find thickness is to find out the mass, divide by the density and then divide by the area.

    l = \frac{m}{\rho A}

    To find the layers of atom you'd then divide by the atomic radius (and since atomic radii are usually measured in pm you'll get a lot of them

    n_{\text {atomic layers}} = \frac{m}{\rho Ar_{atom}}

    Note all units should be SI
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jul 2009
    Posts
    19
    It wouldn't be a problem IF we knew how to do it; the teacher told us to search in the internet, in books or ask a friend to find the answer. In short I don't really have to do the exercise, but due to my curiosity, i'm trying to do it . Thank you for the answer!! =)
    Follow Math Help Forum on Facebook and Google+

  4. #4
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
    From
    West Midlands, England
    Posts
    3,053
    Thanks
    1
    Quote Originally Posted by Julian.Ignacio View Post
    It wouldn't be a problem IF we knew how to do it; the teacher told us to search in the internet, in books or ask a friend to find the answer. In short I don't really have to do the exercise, but due to my curiosity, i'm trying to do it . Thank you for the answer!! =)
    I should point out that I made the assumption that the aluminium is spread out uniformly, ie: all parts are equally thick. This is usually the case and a safe assumption to make unless told otherwise
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Jul 2009
    Posts
    19
    Quote Originally Posted by e^(i*pi) View Post
    I should point out that I made the assumption that the aluminium is spread out uniformly, ie: all parts are equally thick. This is usually the case and a safe assumption to make unless told otherwise
    It's got a square-shaped figure, so i'm assuming that your answer's correct thanks.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Multiplying layers of a 3D matrix
    Posted in the Math Software Forum
    Replies: 1
    Last Post: November 18th 2011, 10:31 PM
  2. atom factorization
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: November 18th 2009, 08:05 AM
  3. prime and atom
    Posted in the Advanced Algebra Forum
    Replies: 1
    Last Post: October 30th 2009, 04:50 PM
  4. Analytical solution of diffusion equation for two layers
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: April 30th 2009, 12:32 AM
  5. Boolean atom
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: February 13th 2009, 09:41 AM

Search Tags


/mathhelpforum @mathhelpforum