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3 marksHydrostatics

CSEC Physics · January 2013 · Paper 2 · Question 3(b)(i)

Figure 3 shows a scuba diver ascending from 20 m below the surface where the water temperature is 10 °C, to the surface, where the temperature is 25 °C and the pressure is 1.01 x 10⁵ Pa.

Calculate the pressure the diver is subjected to at 20 m below the surface of the water. [Density of water = 1025 kg m⁻³] [Acceleration due to gravity, g = 10 m s⁻²]

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Other parts of this question

  1. 3(a)(i)Draw and label a mercury laboratory thermometer, clearly indicating the fixed points.[4 marks]
  2. 3(a)(ii)Draw arrows in Table 3 from each thermometer to map it to its operating range.[3 marks]
  3. 3(b)(ii)By using the general gas law, determine, as a result of the rise, the ratio of the final volume to the initial volume of a bubble.[5 marks]

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