Question

A student is making a cup of coffee and is adding milk to the coffee to cool it down to a drinkable temperature of 50 °C. There is 183 ml of coffee at 82 °C in her cup. You may assume that the specific heat capacity of coffee is the same as that for water; and that the densities of water, coffee and milk are the same. Given: 1 litre = 0,001 cubic meter.

A. Determine how much milk at 4 degree celcius she should add the coffee

B.When will the rate of heat loss be greatest ...Before the mill was added or After the milk was added ???

C.Which principle did you use to come to your conclusion above ??

Answer 1