Question

You have two identical containers, each holding 200 ml of water at 11 °C. You also have two identical rocks, except that rock A is at 48 °C and rock B is at 75 °C. The rocks have the same masses, compositions, sizes, and shapes. You put one rock into each of the water cups at the same time. Which one of the following statements is true?

Answer 1

When two objects at different temperatures are brought into contact with each other, they exchange heat until they reach a common temperature. In this case, rock B will heat the water more than rock A, as rock B has a higher initial temperature.

Step-by-step explanation:

When two objects at different temperatures are brought into contact with each other, they exchange heat until they reach a common temperature. In this case, the two rocks are placed in identical containers of water at 11 °C. Rock A is at 48 °C and rock B is at 75 °C. Since the rocks are identical in mass, composition, size, and shape, the statement that is true is that both rocks will cool down and raise the temperature of the water, but rock B will heat the water more than rock A. This is because rock B has a higher initial temperature, resulting in a larger temperature difference and therefore a greater heat transfer.