Question

consider the following data:
when these two metals are placed in thermal contact with each other, in which direction will heat flow and why?
heat will flow from al to cu because cu has a smaller mass.
heat will flow from cu to al because cu is at a lower temperature.
heat will flow from cu to al because al has a larger heat capacity.
heat will flow from al to cu because cu is at a lower temperature.

Explanation:

Heat transfer occurs from a region of higher temperature to a region of lower temperature. Here, the temperature of Al is \(75^{\circ}C\) and that of Cu is \(40^{\circ}C\). Since \(75^{\circ}C>40^{\circ}C\), heat will flow from the hotter object (Al) to the cooler object (Cu). The mass and specific heat capacity values are not relevant for determining the direction of heat flow; the only factor is the temperature difference.

Answer:

Heat will flow from Al to Cu because Cu is at a lower temperature.