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8 marksScientific Method

CSEC Physics · January 2009 · Paper 2 · Question 1(a)

A student conducted an experiment to determine how the pressure in a liquid varies with depth. The setup is shown in Figure 1, and the results are in Table 1.

On the grid provided on page 3, plot the graph of ΔP against Δh.

This question uses a figure or table from the paper — you'll see it when you practise.

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Other parts of this question

  1. 1(b)(i)Write an equation linking liquid pressure, density and depth.[2 marks]
  2. 1(b)(ii)Calculate the slope, S, of the graph.[5 marks]
  3. 1(b)(iii)Table 2 shows three liquids and their densities. Determine which of these liquids was used in the experiment.[4 marks]
  4. 1(c)Using the graph you plotted on page 3, find the TOTAL pressure exerted on the base of the container in Figure 1. (Gravitational field strength, g = 10 Nkg⁻¹)…[2 marks]
  5. 1(d)(i)State, giving a reason, if the pressure of the gas is LESS than or GREATER than atmospheric pressure.[2 marks]
  6. 1(d)(ii)Calculate the EXCESS pressure in mm Hg.[2 marks]

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