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2 marksHydrostatics

CSEC Physics · January 2009 · Paper 2 · Question 1(d)(i)

Figure 2 shows a manometer measuring the pressure of gas in a container.

State, giving a reason, if the pressure of the gas is LESS than or GREATER than atmospheric pressure.

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Other parts of this question

  1. 1(a)On the grid provided on page 3, plot the graph of ΔP against Δh.[8 marks]
  2. 1(b)(i)Write an equation linking liquid pressure, density and depth.[2 marks]
  3. 1(b)(ii)Calculate the slope, S, of the graph.[5 marks]
  4. 1(b)(iii)Table 2 shows three liquids and their densities. Determine which of these liquids was used in the experiment.[4 marks]
  5. 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]
  6. 1(d)(ii)Calculate the EXCESS pressure in mm Hg.[2 marks]

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