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3 marksMeasurement & Units

CSEC Physics · January 2018 · Paper 2 · Question 2(b)(i)

Students used the apparatus in Figures 3a and 3b to find the specific latent heat of vaporization of water. Figure 3a shows initial readings, and Figure 3b shows readings after 5 minutes and 45 seconds.

Convert the time recorded in Figure 3b to seconds.

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  1. 2(a)Complete Table 2 to distinguish among solids, liquids and gases using the terms 'definite/fixed', 'vibrate', 'move freely', 'very weak/negligibly weak', 'no…[7 marks]
  2. 2(b)(ii)Calculate the mass of water evaporated in the experiment.[3 marks]
  3. 2(c)The power of the electric heater used in the experiment was 100 W. Assuming no heat was lost to the surroundings, calculate the specific latent heat of…[5 marks]

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