Final answer:
The final equilibrium temperature after adding boiling water to a room temperature cup will be below the boiling point of the water but above room temperature, in accordance with the zeroth law of thermodynamics. Therefore, the correct answer is d) Below boiling water temperature.
Step-by-step explanation:
If boiling water is added to a cup at room temperature, according to the zeroth law of thermodynamics, the final equilibrium temperature will be somewhere between the initial temperatures of the boiling water and the room temperature cup.
Since heat flows from the hotter object (boiling water) to the cooler object (the cup), the water's temperature will decrease while the temperature of the cup will increase until thermal equilibrium is reached.
The final equilibrium temperature will be (d) below the boiling temperature of the water but above the initial room temperature of the cup.
Water is a remarkable substance, essential for life as we know it. It's a tasteless, odorless liquid at room temperature that covers about 71% of the Earth's surface and is found in various forms, including liquid, solid (ice), and gas (water vapor).