GESS_4NA_ScPh_Prelim_P2_22

This paper consists of 12 pages including the cover page GAN ENG SENG SCHOOL Preliminary Examination 2022 CANDIDATE NAME CLASS INDEX NUMBER SCIENCE (PHYSICS) Paper 2 Sec 4 Normal (Academic) 5105/02 19 Aug 2022 Papers 1 & 2: 1 hour 15 minutes Candidates answer on the Question Paper. Calculators are allowed in the examination READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid/tape. Answer all questions in Section A and any two questions in Section B. Enter the numbers of the Section B questions you have answered on the dotted lines in the grid below. In calculations, you should show all the steps in your working, giving your answer at each stage. You are advised to spend no longer than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. At the end of the examination, hand in your answers to Paper 1 and Paper 2 separately. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A Section B ………….. ………….. Total 30

GESS 4NA ScPh P2 Prelim 22 TYL (LTW) 2 Section A Answer all the questions in the spaces provided. 1 In 2014, Third Warrant Officer Shirley Ng, the first female Red Lion parachutist, jumped at the National Day Parade. (a) Name two forces acting on her that oppose each other as she falls. ………………………………………………………………………………………...…. [1] (b) As she falls, her speed changes with time as shown. (i) Suggest why the acceleration decreases between A and B. ……………………………………………………………………………………….... ……………………………………………………………………………………….... ……………………………………………………………………………………….... ………………………………………………………………………………..…… [2] (ii) At which point on the graph when the parachute was opened? …………………………………………………………………………………….. [1] (iii) State the section on the graph when she experienced constant deceleration. …………………………………………………………………………………….. [1]

GESS 4NA ScPh P2 Prelim 22 TYL (LTW) 3 2 The graph of pressure against time for a sound wave produced by a musical instrument is as shown. (a) Determine the frequency of this sound wave. frequency = ………………………… Hz [2] (b) Given that the speed of sound in the air is 340 m/s , calculate the wavelength of this sound wave. wavelength = ………………………… m [1]

GESS 4NA ScPh P2 Prelim 22 TYL (LTW) 4 3 A circuit diagram is shown. (a) Draw, on the circuit diagram above, where you would position an ammeter and a voltmeter so that the values for the total current th rough the two identical lamps and the potential difference across the lamps can be measured. [2] (b) When connected correctly, the