2023 AQA A-level PHYSICS 7408/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA A-level PHYSICS 7408/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] A-level PHYSICS Paper 2 Friday 9 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of 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 to be marked. • Show all your working. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8–32 TOTAL 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. *JUN* IB/M/Jun23/E7 7408/2 2 Section A Answer all questions in this section. 0 1 . 1State what is meant by the internal energy of an ideal gas. [1 mark] Figure 1 shows a single gas particle P of an ideal gas inside a hollow cube. Figure 1 The cube has side length l and volume V. P has mass m and is travelling at a velocity c perpendicular to side W. 0 1 . 2Explain why P has a change in momentum of −2mc during one collision with W. [1 mark] Do nott writite outtsiide tthe box *02* IB/M/Jun23/7408/2 0 3 0 1 . 3 P collides repeatedly with W. Show that the frequency f of collisions is 2 c l . [1 mark] 1 . 4 Deduce an expression, in terms of m, c and V, for the contribution of P to the pressure exerted on W. Refer to appropriate Newton’s laws of motion. [2 marks] Turn over for the next question Do not write outside the box 5 Turn over ► *03* IB/M/Jun23/7408/2 4 0 2Figure 2 shows a wheel used in motorsport. A rubber tyre is fitted around a cylindrical metal rim. The tyre is filled with a gas. The dimensions shown in Figure 2 are for the v