A-LevelPhysicsThermodynamicsOct/Nov 2017Paper 4 Q28 Marks
(b) A beaker of boiling water is placed on the pan of a balance, as illustrated in Fig. 2.1. [Figure 2.1] The water is maintained at its boiling point by means of a heater. The change M in the balance reading in 300s is determined for two different input powers to the heater. The results are shown in Fig. 2.2. [Figure 2.2]
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