warming.txt

⋊> ~ python3                                                            12:16:25
Python 3.7.3 (default, Apr  3 2019, 05:39:12) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> cal2j = lambda x: x*4.184 # calories -> joules
>>> oz2ml = lambda v: v*20.574 # ounces -> milliliters
>>> vol = oz2ml(2) # 2 oz. serving
>>> cold = 4.5 # 4.5C, or ~40F
>>> warm = 40 # 40C, or ~105F
>>> heat = warm - cold
>>> energy = cal2j(vol * heat) # watts needed
>>> energy
6111.794736000001