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Raising temp of air

  1. Sep 16, 2009 #1
    A 1500-W heater is designed to be plugged into a 120-V outlet.

    How long does it take to raise the temperature of the air in a good-sized living room (3m x 5m x 8m) by 10.0 degrees C. Note that the specific heat of air is 1006 J/kg and the density of air is 1.20 kg/m^3.

    I=12.5 A
    R=9.6 ohms

    I found I and R but don't know the equation to solve this last part
     
    Last edited: Sep 16, 2009
  2. jcsd
  3. Sep 16, 2009 #2

    rl.bhat

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    What is the formula for calculating the heat gained by the air?
     
  4. Sep 17, 2009 #3
    (mass) x (specific heat) x (chang in temp)?
     
  5. Sep 17, 2009 #4
    How much energy does it take to raise the room temperature? You need to answer that question.
     
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