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3 marksMechanical Properties of Materials

CAPE Physics Unit 1 · 2008 · Paper 2 · Question 3(c)(ii)

The following results were obtained: h₀ = 5.0 cm, h₁₀₀ = 20.0 cm, h = 16.8 cm. Additional constants are: Density of mercury 13 600 kg m⁻³, Atmospheric pressure 76 cm Hg, Acceleration due to gravity g = 9.81 m s⁻².

Determine the pressure of the gas in the bulb when the liquid is at its boiling point.

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Other parts of this question

  1. 3(a)List ONE advantage and ONE disadvantage of using a liquid in glass thermometer, a thermocouple and a constant volume gas thermometer to measure temperature.[6 marks]
  2. 3(b)Figure 2 shows the setup of the experimental arrangement to determine the boiling point of a liquid. The following apparatus is available: a constant volume…[1 mark]
  3. 3(b)(i)How would you ensure that the volume of gas in the bulb is held constant?[1 mark]
  4. 3(b)(ii)Carefully explain how readings are taken to determine a) h₀, the height of the mercury column at 0 °C b) h₁₀₀, the height of the mercury column at 100 °C c) h,…[4 marks]
  5. 3(c)The following results were obtained: h₀ = 5.0 cm h₁₀₀ = 20.0 cm h = 16.8 cm[1 mark]
  6. 3(c)(i)Using the above results, determine the boiling point of the liquid.[1 mark]

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