Chapter 12, Problem 68A

To determine

To Explain: Whether the two cups of water have equal temperature after equilibrium is achieved.

Answer to Problem 68A

No

Explanation of Solution

Given:

Two lead blocks have same temperature.

Block A has twice the mass of block B.

The temperature of water is equal.

Formula Used:

Thermal energy can be obtained by:

  $Q=mc\Delta T$

Where, m is the mass, c is the specific heat capacity and $\Delta T$ is the difference in temperature.

Calculation:

For thermal equilibrium:

Heat lost by lead block = heat gained by water

As the thermal energy depends on the mass and also, there is difference in the mass of the two blocks, the two cups of water would not have same temperature after achieving equilibrium.