Recent content by madjockmcfers

  1. M

    Thermodynamics, calculating the time it will take water to boil away

    Thanks everyone. That makes sense. I was struggling yesterday but in the cold light of day that looks about right!
  2. M

    Thermodynamics, calculating the time it will take water to boil away

    It does seem a little long. One problem is clearly it doesn't give a mass...so how I'm supposed to give a correct answer I don't know. My only thought is that mass cancels out somewhere...I just haven't worked out where yet. The additional problem here is the question says how long will...
  3. M

    Thermodynamics, calculating the time it will take water to boil away

    Homework Statement Ok, so my book has the following problem: A kettle can heat 20°C water to 100°C in 5 minutes. How long will it take to completely boil it away assuming the same rate of heat addition. Homework Equations I think Q=mcΔT is relevant but beyond that I am struggling...