An exercise I have problems with:
In a thermos bottle with heat capacity 90 J/K there is 0.4 kg water. The temperature of the water and the thermos bottle is 313 K. Brass with mass 0.1 kg has temperature 363 K and specific heat capacity 380 J/(kg *K). It is dropped into the thermos bottle.
a) What will the temperature of the water be?
b) 0.02 kg ice with temperature 273 K is added. What will the temperature of the water be now?
I presume that no heat will leak from the thermos bottle.
I think I will manage a), but b) is more difficult. Help will be appreciated.
