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A-level PHYSICS Paper 2 Question Paper 2020

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A-level PHYSICS Paper 2 Monday 1 June 2020 Afternoon Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae ... Booklet. 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. Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. A-level PHYSICS Paper 2 2 *02* IB/M/Jun20/7408/2 Section A Answer all questions in this section. 0 1 A perfectly insulated flask contains a sample of metal M at a temperature of –10 °C. Figure 1 shows how the temperature of the sample changes when energy is transferred to it at a constant rate of 35 W. Figure 1 0 1 . 1 State the melting temperature of M. [1 mark] temperature = °C Do not write outside the box 3 *03* Turn over ► IB/M/Jun20/7408/2 Do not write outside the 0 1 box . 2 Explain how the energy transferred to the sample changes the arrangement of the atoms during the time interval tA to tB. [1 mark] 0 1 . 3 State what happens to the potential energy of the atoms and to the kinetic energy of the atoms during the time interval tA to tB. [2 marks] 0 1 . 4 Describe how the motion of the atoms changes during the time interval tB to tC. [1 mark] Question 1 continues on the next page 4 *04* IB/M/Jun20/7408/2 Do not write outside the 0 1 box . 5 The sample has a mass of 0.25 kg. Determine the specific heat capacity of M when in the liquid state. State an appropriate SI unit for your answer. [3 marks] specific heat capacity = unit [Show More]

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