1. The problem statement, all variables and given/known data Hi people, Im just having a little play with some physics because basically I went to drink my tea this morning and its always too hot. Then I wait and its always too cold. So therefore I fancy to try and workout how long should I leave it until it is cool. I found a study that says 60 deg c is 'perfect'. Therefore for my size of mug I want to know how long I should leave it in the morning. My tea' consists of the ceramic mug, water, and milk. Obviously the tea bag will absorb some heat but I can't be bothered with that. I assume that heat will be lost through conduction with the air at the sides of mug, convection from the top and also radiation (can I assume black body?). What would be a good way of going about this? I assume newtons law of cooling is the way forward but I haven't done it for a long time. I fancy going reasonably accurately with this so just need to check my line of thinking 2. Relevant equations + Info Specific Heat Capacity of Ceramic SHP of Water SHC of Milk Newtons Law of Cooling I know the dimensions of my mug 3. The attempt at a solution No attempt, I don't wish to have an answer just some ideas that I can look into so I can go away and work some stuff out.