2023 AQA AS PHYSICS 7407/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA AS PHYSICS 7407/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] AS PHYSICS Paper 1 Wednesday 17 May 2023 Morning Time allowed: 1 hour 30 minutes 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 TOTAL Information • The marks for questions are shown in brackets. • The maximum mark for this paper is 70. • 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 7407/1 2 Answer all questions in the spaces provided. 0 1 A strong interaction between a negative kaon (K − ) and a proton (p) produces − 0 The interaction is: K − + p → Ω− + K0 + Y Table 1 contains information on the particles in this interaction. Table 1 K − p Ω − K 0 Y Rest energy / MeV 493.8 938..8 493.8 Baryon number +1 +1 0 Charge −1e +1e −1e 0 Strangeness −1 0 −3 +1 0 1 . 1 Complete Table 1. [2 marks] Calculate, in J, the rest energy of the Ω − 0 1 2 . [2 marks] rest energy = J Do not write outside the box *02* IB/M/Jun23/7407/1 3 0 1 . 3 Suggest how energy is conserved in this interaction. Refer to the rest energies of the particles in Table 1. [2 marks] The quark structure of the Ω − particle is sss. The Ω − is unstable. It decays into a proton through a series of decays