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5 marksGas Laws

CSEC Physics · May/June 2014 · Paper 2 · Question 3(b)(i)

A car tyre is pumped to a pressure of 2 × 10⁵ N m⁻² when the temperature is 23°C. Later, the temperature rises to 34°C, with the volume of air kept constant.

Calculate the new pressure in the tyre. The volume of air is kept constant.

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Other parts of this question

  1. 3(a)(i)State the equation for the general gas law for an ideal gas.[1 mark]
  2. 3(a)(ii)State the meaning of EACH symbol stated in the equation in (a) (i).[4 marks]
  3. 3(b)(ii)Using the kinetic theory of matter, explain why the increase in pressure occurred.[2 marks]
  4. 3(b)(iii)Calculate the ratio of new volume to old volume (V₂/V₁) for the tyre, if the pressure is held constant while the temperature rises from 23°C to 34°C.[3 marks]

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