- #1
Backtoschool
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I am learning the concepts of thermodynamics and this one is confusing me! The question is - If I pour myself a cup of hot coffee and then the phone rings, is it better to pour the cream (room temperature) before walking away, or when I return in order to have the hottest coffee when I return?
I believe that convection applies to liquids and movement, but I'm just not getting it. My instinct tells me that the increased density would slow the energy of the particles, therefore decreasing the heat loss. But I keep getting stuck on whether the cream would act as a coolant - or whether it's relevant at all! Can anyone help? Thanks so much! I have a feeling you'll be seeing a lot of me on this site...
I believe that convection applies to liquids and movement, but I'm just not getting it. My instinct tells me that the increased density would slow the energy of the particles, therefore decreasing the heat loss. But I keep getting stuck on whether the cream would act as a coolant - or whether it's relevant at all! Can anyone help? Thanks so much! I have a feeling you'll be seeing a lot of me on this site...