AQA-PH1HP-QP-JAN13 - Centre Number For Examiners Use Candidate Number Surname Other Names Examiners Initials Candidate Signature Question General

AQA-PH1HP-QP-JAN13 - Centre Number For Examiners Use...

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General Certificate of Secondary Education Higher Tier January 2013 Science A PH1HP Unit Physics P1 Physics Unit Physics P1 Thursday 17 January 2013 1.30 pm to 2.30 pm For this paper you must have: a ruler a calculator the Physics Equations Sheet (enclosed). Time allowed 1 hour 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. Do all rough work in this book. Cross through any work you do not want to be marked. Information The marks for questions are shown in brackets. The maximum mark for this paper is 60. You are expected to use a calculator where appropriate. You are reminded of the need for good English and clear presentation in your answers. Question 3(b) should be answered in continuous prose. In this question you will be marked on your ability to: – use good English – organise information clearly – use specialist vocabulary where appropriate. Advice In all calculations, show clearly how you work out your answer. PH1HP H (Jan13PH1Hp01) G/K91149 6/6/6/6 Centre Number Candidate Number Surname Other Names Candidate Signature For Examiner’s Use Examiner’s Initials Question Mark 1 2 3 4 5 6 7 TOTAL
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2 Do not write outside the box (02) G/K91149/Jan13/PH1HP Answer all questions in the spaces provided. 1 Diagram 1 shows the energy transferred per second from a badly insulated house on a cold day in winter. Through the roof 1.7 kJ/s Through the floor 0.7 kJ/s Through draughts 0.8 kJ/s Through the windows 0.7 kJ/s Through the walls 1.1 kJ/s Diagram 1 1 (a) (i) When the inside of the house is at a constant temperature, the energy transferred from the heating system to the inside of the house equals the energy transferred from the house to the outside. Calculate, in kilowatts, the power of the heating system used to keep the inside of the house in Diagram 1 at a constant temperature. 1 kilowatt (kW) = 1 kilojoule per second (kJ/s) ............................................................................................................................................ Power of the heating system = ............................................................ kW (1 mark)
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3 Do not write outside the box (03) G/K91149/Jan13/PH1HP Turn over 1 (a) (ii) In the winter, the heating system is switched on for a total of 7 hours each day. Calculate, in kilowatt-hours, the energy transferred each day from the heating system to the inside of the house. Use the correct equation from the Physics Equations Sheet. ............................................................................................................................................ ............................................................................................................................................ Energy transferred each day = ............................................................ kWh (2 marks) 1 (a) (iii) Energy costs 15 p per kilowatt-hour. Calculate the cost of heating the house for one day. ............................................................................................................................................ Cost = .............................. (1 mark) Question 1 continues on the next page
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4 Do not write outside the box (04) G/K91149/Jan13/PH1HP 1 (a) (iv) The heating system is switched off at midnight. The graph shows how the temperature inside the house changes after the heating system has been switched off.
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