anonymous
  • anonymous
If an ice cube is placed in a cup of water and 15% of it is above the water, what is the approximate density of the ice cube (assuming the density of water is 1000 kg/m^3)? And how much did the water expand as it froze? Explain how you determined this.
Physics
katieb
  • katieb
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anonymous
  • anonymous
|dw:1351477183355:dw|
anonymous
  • anonymous
|dw:1351477287369:dw|
anonymous
  • anonymous
So, to find \(\rho_{ice}\) the two forces must be equal since ice is in static equilibrium.

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anonymous
  • anonymous
So I should set them equal to each other? And what is V standing for here?
anonymous
  • anonymous
Volume of the ice cube. It'll cancel each other, so don't worry.
anonymous
  • anonymous
Oh, ok. So I do set them equal to each other?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
So it ends up being .85 * 1000 kg/m^3?
anonymous
  • anonymous
It seems correct. Rho of ice is less tha rho of water.
anonymous
  • anonymous
Alright, thanks a lot, I think I've got the rest!
anonymous
  • anonymous
np :)

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