Physics > Edexcel > Pearson Edexcel International GCSE In Physics (4PH1) Paper 2P...Mark Scheme (Results) January 2022. (All)

Pearson Edexcel International GCSE In Physics (4PH1) Paper 2P...Mark Scheme (Results) January 2022. LATEST

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Question number Answer Notes Marks 1 (a) A; 1 B cannot be correct as it measures distance C cannot be correct as it measures temperature D cannot be correct as it measures voltage (b) (i) moment... um = mass × velocity; accept standard symbols e.g. p for momentum 1 reject m or M for momentum (ii) 72 × 13 = 936; 1 (iii) substitution into given equation; 2 correct evaluation; accept use of p of 900, 936 or 940 correct answer: 3200 (N) e.g. force = change in momentum ÷ time taken = 936 ÷ 0.29 = 3200 (N) expect values of 3103, 3228 and 3241 1 (iv) A cannot be correct as increasing the force does not protect the driver C cannot be correct as they would both increase the force on the person D cannot be correct as the airbag decreases the momentum Total for question 1: 6 marks https://britishstudentroom-b430a.web.app/Question number Answer Notes Marks 2 (a) idea of regular pattern/tightly packed; allow diagram 3 particles vibrating; (about) fixed positions / eq; condone molecules or atoms for particles ignore reference to force (b) increases continuously from -40 to 44 oC ; 3 remains constant (at 44 oC); increases continuously from 44 to 80 oC; ECF incorrect plateau responses with no period of time at 44 score max 1 mark accept any gradient, straight lines or curves for the increasing temperature parts ignore any numbers on the time axis ignore second plateau after 44 if drawn Total for question 2: 6 marks https://britishstudentroom-b430a.web.app/Question number Answer Notes Marks 3 (a) D; 1 A cannot be correct as this is a description of fission B cannot be correct as this is a description of gamma decay C cannot be correct as this is a description of beta decay (b) (nuclei are) positively charged; reject idea of charged atoms 2 like charges repel; (c) high temperature; 2 high pressure; ‘high temperature and pressure’ scores 2 marks Total for question 3: 5 marks [Show More]

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