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Physics 11 question help?

  • Thread starter roxxyroxx
  • Start date
1. Homework Statement

A 3.0kg block of ice made in a fridge has an initial temp. of -5.0[tex]\circ[/tex]C. It
is then moved to a much colder freezer. how much thermal energy is released by the ice as it cools to -40.0[tex]\circ[/tex]C?
2. Homework Equations
EH = mc[tex]\Delta[/tex]T
for water, c = 4186 J/kg/[tex]\circ[/tex]C


3. The Attempt at a Solution
EH = mc[tex]\Delta[/tex]T
EH = (3.0kg)(4186 J/kg/[tex]\circ[/tex]C)(-40.0[tex]\circ[/tex]C - -5.0[tex]\circ[/tex]C)
= -439530 J
but the answer should be 2.2 x 10^5 J
help?
 
Last edited:

LowlyPion

Homework Helper
3,079
4
The specific heat of ice is different from that of water.
 

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