HESI A2 ANATOMY & PHYSIOLOGY PRACTICE QUESTION ANDANSWERS

Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signat re I declare this is my own work. 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. For Examiner’s Use Question Mark 1 2 3 4 5 6 7–31 TOTAL *JUN20740 201* IB/M/Jun20/ E12 7408/2 2 *02* IB/M/Jun20/7408/2 Section A Answer all questions in this section. Do not write outside the box 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 . State the melting temperature of M. [1 mark] temperature = °C 3 *03* IB/M/Jun20/7408/2 . Explain how the energy transferred to the sample changes the arrangement of the atoms during the time interval tA to tB. Do not write outside the box [1 mark] . 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] . Describe how the motion of the atoms changes during the time interval tB to tC. [1 mark] Question 1 continues on the next page Turn over ►