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!

Density of a nickel

  1. Feb 22, 2008 #1
    1. The problem statement, all variables and given/known data

    A 1938-nickel has a diameter of 2.11×10-2 m, a thickness of 1.95×10-3 m, and weighs 4.94×10-2 N.
    What is its density?

    2. Relevant equations
    density=m/v ??? or density =w/vg


    3. The attempt at a solution

    cant find the volume, I feel like I should drop out of university it's the simplest problem and I'm completely stuck.

    v= pir^2 ???
     
  2. jcsd
  3. Feb 22, 2008 #2

    Kurdt

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The nickel is circular so the area of the circle is [itex] A=\pi r^2 [/itex], which you will multiply by the thickness to get the volume.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Density of a nickel
  1. Current Density (Replies: 4)

Loading...