Cambridge AssessmentInternational EducationCambridge International AS A LevelCANDIDATENAMECENTRECANDIDATENUMBERNUMBERPHYSICS9702/52Paper 5 Planning,Analysis and EvaluationFebruary/March 20231 hour 15 minutesYou must answer on the question paper.No additional materials are needed.INSTRUCTIONS.Answer all questions.Use a black or dark blue pen.You may use an HB pencil for any diagrams or graphs.Write your name,centre number and candidate number in the boxes at the top of the page.Write your answer to each question in the space provided.Do not use an erasable pen or correction fluid.Do not write on any bar codes.You may use a calculator.You should show all your working and use appropriate units.INFORMATION.The total mark for this paper is 30.The number of marks for each question or part question is shown in brackets ]This document has 8 pages.DC(CE/SG)314369/1©UCLES2023[Turn over21 An electric pump is placed in a container of liquid.A model wind turbine is connected to the pumpby a cable,as shown in Fig.1.1.bladesmoving air-pipehcablepumpwind turbinebenchliquidFig.1.1(not to scale)The turbine is placed in moving air.As the turbine blades turn,electricity is generated and thepump pushes liquid through a vertical pipe.The frequency of rotation of the turbine blades is f.The height the liquid moves is h.The mass perunit time of the liquid leaving the top of the pipe is Q.It is suggested that Q is related to f by the relationshipQgh=C+Df3where g is the acceleration of free fall,and C and D are constants.Plan a laboratory experiment to test the relationship between Q and f.Draw a diagram showing the arrangement of your equipment.Explain how the results could be used to determine values for C and D.In your plan you should include:the procedure to be followedthe measurements to be takenthe control of variablesthe analysis of the dataany safety precautions to be taken.©UCLES20239702/52/FM233Diagram©UCLES20239702/52/F/M23