A very hot mug of coffee is close to a large unheated swimming pool containing $2.0 \times 10^6\,\text{kg}$ of water. Which statement is true?
- AIf the mug of coffee is tipped in the pool, the coffee will lose much more internal energy than the water in the pool gains.
- BThe internal energy of a substance depends only on its temperature.
- CThe internal energy of the water in the pool is lower than the internal energy of the mug of coffee.
- DWhen the temperature of the mug of coffee falls, its internal energy will decrease.