NJC_H1_PHY_P1_Question

1 NJC 2016 8866/01/16 [Turn over PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 8866/01 31 August 2016 1 hour READ THE INSTRUCTION FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. This document consists of 14 printed pages. OAS index number is in 5-digit format. 5 digit format: 2nd digit and the last four digits of the Reg Number. e.g. 0905648 = 95648. 1

2 NJC 2016 8866/01/16 [Turn over Data speed of light in free space, c = 3.00 x 108 m s-1 elementary charge, e = 1.60 x 10-19 C the Planck constant, h = 6.63 x 10-34 J s unified atomic mass constant, u = 1.66 x 10-27 kg rest mass of electron, me = 9.11 x 10-31 kg rest mass of proton, mp = 1.67 x 10-27 kg acceleration of free fall, g = 9.81 m s-2 Formulae uniformly accelerated motion, s = ut + ½at2 v2 = u2+ 2as work done on/by a gas, W = pV hydrostatic pressure, p = gh resistors in series, R = R1 + R2 + … resistors in parallel, 1/R = 1/R1 + 1/R2 + …

3 NJC 2016 8866/01/16 [Turn over A 2 B 3 C 4 D 8 1. The volume of liquid flowing per second is called the volume flowrate Q and has the unit m3 s-1. The flowrate through a hypodermic needle during an injection can be estimated with the following equation: 𝑄 = 𝜋𝑅𝑛(𝑃2 − 𝑃1) 8𝜂𝐿 The length and radius of the needle are L and R, respectively. The pressure at opposite ends of the needle are P2 and P1. The viscosity of the liquid is given by  which has the unit kg m-1 s-1 . The value of n is 2. In an experiment to find the constant acceleration of a toy car, the speed of the toy car was captured using speed meters placed at 2 different locations, A and B respectively. The distance between A and B is measured as S. Distance S = 1.400 m ± 0.002 m The manufacturer for the speed meter quoted an uncertainty of 1 % for their instrument. Speed measured at A = 2.50 m s-1 Speed measured at B = 4.65 m s-1 The correct acceleration of the toy car is A (5.49 ± 0.04) m s-2 B (5.50 ± 0.04) m s-2 C (5.5 ± 0.4) m s-2 D (5.5 ± 0.2) m s-2

4 NJC 2016 8866/01/16 [Turn over 3. The figure below shows the speed v versus vertical height y of a ball tossed directly upward. The speed at height yA is vA. The speed at height yB is 1/3 vA. What is the speed vA? A 2.1