A student investigates the cooling of hot water in a beaker. The apparatus is shown in Fig. 2.1. Fig. 2.1 The student pours $$\(100 \mathrm{~cm}^{3}\)$$ of hot water into an empty beaker. She records the temperature $$\(\theta\)$$ of the hot water in the $$\(V=100 \mathrm{~cm}^{3}\)$$ row of Table 2.1, as shown. Without delay, she pours $$\(20 \mathrm{~cm}^{3}\)$$ of cold water into the beaker. She stirs the water and measures the temperature of the mixture of hot and cold water. She repeats the procedure until she has added a total of $$\(100 \mathrm{~cm}^{3}\)$$ of cold water to the beaker. All the readings are shown in Table 2.1. $$\(V\)$$ is the total volume of water in the beaker. Complete the column headings in Table 2.1. Table 2.1

Answer:

Knowledge points:

Solution: