YSS 2024 4E Phy Prelim P3 with MS

[Turn over YISHUN SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/03 Paper 3 Practical Test 5 August 2024 1 hour 50 minutes Candidates answer on the Question Paper. Additional Materials: As listed in the Confidential Instructions READ THESE INSTRUCTIONS FIRST Write your name, class and index number on the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions. All of your answers should be written in this Question Paper: scrap paper must not be used. Graph paper is provided in this Question Paper. Additional sheets of graph paper should be used only if it is necessary to do so. You will be allowed to work with the apparatus for a maximum of 55 minutes for each section. You are expected to record all your observations as soon as they are made. An account of the method of carrying out the experiments is not required. The use of an approved scientific calculator is expected, where appropriate. At the end of examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 12 printed pages and 1 blank page. For Examiner’s Use Q1 Q2 Q3 Total

2 Section A 1 In this experiment, you will determine a value of the specific heat capacity and heat capacity of a piece of metal. You are provided with ● a piece of metal tied with a loop of wire, ● a Bunsen burner with tripod and wire gauze, ● a beaker labelled A filled with water. ● an empty beaker labelled B, ● a laboratory thermometer, ● a glass rod, ● a polystyrene cup, ● a lighter, ● a stopwatch, ● supply of hot water. (a) (i) Record the mass, m, inscribed on the piece of metal with a loop of wire attached. Leave your answer in SI unit. m = ………………………… (ii) Measure and record the temperature ϴw of the water in beaker A. ϴw = ………………………… [1] (b) You are to set up the apparatus as shown in Fig. 1.1. Fig. 1.1 ● Place beaker B on the wire gauze and tripod. ● Place the piece of metal in beaker B. The loop of the wire tied to the piece of metal should be hanging out of the water. ● Collect a cup of hot water from the teacher’s bench using the polystyrene cup. ● Pour sufficient hot water into beaker B so that it covers the piece of metal. The piece of metal can be lying on its side. Avoid pouring too much water. XXXXXXXXXXXXXXXXXXXX beaker B metal tied with a wire tripod with wire gauze Bunsen burner

3 [Turn over (i) Light the Bunsen burner. After heating for about 3 minutes, switch off the Bunsen burner and wait for about 30 s. Use the thermometer to record the temperature ϴm of the water. The temperature of the water is assumed to be the same as the temperature of the piece of metal. ϴm = ………………………… (ii) Remove the thermometer from beaker B and place on the bench. (iii) Using the glass rod to thread through the loop of wire, transfer the piece of metal from beaker B into beaker A. Place the thermometer in beaker A such that the bulb does not touch the piece of metal. Record the highest stable temperature ϴh of the water in beaker A. ϴh = ………………………… [1] (c) Calculate the specific heat capacity Cm of the piece of metal using the equation where 210 J/°C is the heat capacity of the water in beaker A. Cm = ………………………… [2] (d) Calculate the heat capacity of the piece of metal. heat capacity = ………………………… [1] 210 J/C × (ϴh - ϴw) Cm = m (ϴm - ϴh)

4 (e) State four reasons why the value of Cm in (c) is not accurate. 1 …………………………………………………………………………………………………….…… ……………………………………………………………………………………………...…………… 2 …………………………………………………………………………………………………………. ………………………………………………………………………………………………………...… 3 …………………………………………………………………………………………………………. ………………………………………………………………………………………………………...… 4 …………………………………………………………………………………………………………. ………………………………………………………………………………………………………...… [4] [Total: 9]

5 [Turn over 2 In this experiment, you will investigate the oscillation of a spring. You have been provided with ● a spring, ● a stand with boss and clamp, ● a 200 g slotted mass, ● a half-metre rule. (a) Measure and record the unstretched length L of the coiled part of the spring, as shown in Fig. 2.1. Fig. 2.1 L = ……………………. [1] (b) You are to set up the apparatus as shown in Fig. 2.2. Fig. 2.2 Place the slotted mass of 200 g at the end of the spring. (i) State the weight W of the 200 g slotted mass. Take g as 10N/kg. W = ……………………. [1] L spring

6 (ii) Measure and record the new length L1 of the coiled part of the spring and determine the extension e of the spring using the equation e = L1 - L L1 = ……………………. e = ……………………. [1] (c) The slotted mass pulls the spring with a force equivalent to its weight W and the relationship between W and e is given by the equation W = ke where k is the spring constant of the spring. This value of k remains constant as long as the weight hanging on the spring is not large enough to stretch it permanently. Calculate k and express the answer in SI unit. k = ……………………. [1] (d) Describe one way to obtain a more accurate value of k. .…………………………………………………………………………………………………….……. ………………………………………………………………………………………………………. [1] (e) Plan If we pull the mass down slightly and release, the spring will oscillate vertically. A student claims that the period of the vertical oscillation T, may be written in the form Plan an experiment to investigate the student’s claim. You may use the apparatus provided and include any other common apparatus found in a science laboratory. You plan should: ● explain briefly how you would perform the experiment, ● draw a table, with column headings, to show how to display the range of readings, ● a statement of the graph that you should plot, ● a plot of the graph, ● an explanation on how k could be found from the graph. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. T = ( ) 0.4W k

7 [Turn over .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. .…………………………………………………………………………………………………….……. ………………………………………………………………………………………………………. [6] [Total: 11]

8 BLANK PAGE

9 [Turn over Section B 3 In this experiment, you will