Is there a way to determine the "heating power" of a substance with a known specific heat and mass, onto another object of another known specific heat and mass. Say if I had a tank of water and dropped in a piece of metal for example, let the metal heat up, but not let the system come to equilibrium. Now I want to figure out the temperature of the metal chunk after X amount of seconds in the water. So I would need to find the rate at which energy is being absorbed from the water into the metal. How? I havent dont these types of problems in years, and even then, the question had, "and the system is let to reach equilibrium" line at the end. Now lets take it a step further, insead of a closed system with a set amount of "hot" and "cold" mass, say one or both of those were moving past eachother, like hot steam traveling through a condenser, or hot water moving through a pipe in a bucket of cold water.