AQA A-level PHYSICS Question Paper 2 June 2023

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. 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. *JUN23740201* IB/M/Jun23/E7 7408/2 Section A Answer all questions in this section. Do not write outside the box 0 1 . 1 State 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 . 2 Explain why P has a change in momentum of −2mc during one collision with W. [1 mark] . P collides repeatedly with W. Show that the frequency f of collisions is c . 2l [1 mark] Do not write outside the box . 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