AQA A Level Physics Paper 2 2019 Question Paper.
Section A
Answer all questions in this section.
0 1 Figure 1 shows a perfectly insulated cylinder containing 0.050 kg of liquid nitrogen at
a temperature of 70 K.
A heater transfers energy at a constant rate of 12 W to the nitrogen.
A piston ma...
Friday 24 May 2019 Morning Time allowed: 2 hours
Materials
For this paper you must have:
• a pencil and a ruler For Examiner’s Use
• a scientific calculator Question Mark
• a Data and Formulae Booklet.
1
Instructions 2
• Use black ink or black ball-point pen. 3
• Fill in the boxes at the top of this page. 4
• Answer all questions.
5
• You must answer the questions in the spaces provided. Do not write
outside the box around each page or on blank pages. 6
• If you need extra space for your answer(s), use the lined pages at the end of 7−31
this book. Write the question number against your answer(s).
• Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
• Show all your working.
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 85.
• You are expected to use a scientific calculator where appropriate.
• A Data and Formulae Booklet is provided as a loose insert.
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Do not write
Section A outside the
box
Answer all questions in this section.
0 1 Figure 1 shows a perfectly insulated cylinder containing 0.050 kg of liquid nitrogen at
a temperature of 70 K.
A heater transfers energy at a constant rate of 12 W to the nitrogen.
A piston maintains the pressure at 1.0 × 105 Pa during the heating process.
Figure 1
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outside the
0 1 . 1 The nitrogen is heated from 70 K and is completely turned into a gas after 890 s. box
Calculate the specific heat capacity of liquid nitrogen.
Give an appropriate unit for your answer.
specific latent heat of vaporisation of nitrogen = 2.0 × 105 J kg−1
boiling point of nitrogen = 77 K
[5 marks]
specific heat capacity = unit =
Question 1 continues on the next page
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