Question

The two insulated beakers shown contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to find when the system is examined after this time?

A. The temperature of Beaker A would be 50°C and the temperature of Beaker B would be 80°C.

B. The temperatures of the two beakers would be unchanged.

C. Both of the beakers would be at a temperature of 50°C.

D. Both of the beakers would be at a temperature of 65°C.

Answer 1

Assuming no heat is lost to the surroundings, all the heat will flow from the hotter beaker through the copper rod to the cooler beaker until they are at equal temperatures.

80 and 50 are separated by 30 degrees, so both beakers will reach a temperature that is halfway between them,

Loss of heat: 80 -> 65
Gain of heat: 50 -> 65

Answer 2

Thank you

Answer 3

no problem