2013_NYJC_H2_Physics_P1_QP

NANYANG JUNIOR COLLEGE  Science Department  JC 2 PRELIMINARY EXAMINATION  Higher 2  PHYSICS  9646/01 Paper 1   Multiple Choice  18 September 2013    1 hour 15 minutes  Additional Materials : Multiple Choice Answer Sheet  READ THESE INSTRUCTIONS 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 TWENTY‐TWO 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 9 printed pages    Nanyang Junior College

2 Data Formulae uniformly accelerated motion, s = ut + ½at2 v2 = u2 + 2as work done on/by a gas, W = p∆V hydrostatic pressure, p = Ρgh gravitational potential,  = /Gm r displacement of particle in s.h.m. x = xo sin ωt velocity of particle in s.h.m. v = vo cos ωt =  22 xxo  mean kinetic energy of a molecule of an ideal gas E = 3 2 kT resistors in series, R = R1 + R2 + … resistors in parallel, 1/ R =1 / R1 + 1/R2 + … electric potential, V = Q / 4πεor alternating current/voltage, x = xo sin ωt transmission coefficient, T α exp(-2kd) where k =  2 2 8 mU E h   radioactive decay, x = xo exp (-λt) decay constant λ = 21 693.0 t speed of light in free space, c = 3.00 x 10 8 m s-1 permeability of free space, μo =4 π x 10-7 H m-1 permittivity of free space, εo = 8.85 x 10 -12 Fm-1 (1 / (36 π)) x 10-9 Fm-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 molar gas constant, R = 8.31 J K -1 mol-1 the Avogadro constant, NA = 6.02 x 10 23 mol-1 the Boltzmann constant, k = 1.38 x 10 -23 J K-1 gravitational constant, G = 6.67 x 10 -11 N m2 kg-2 acceleration of free fall, g = 9.81 m s -2

3 1 One form of Bernoulli’s principle for incompressi ble fluid flows states that throughout the flow, a certain quantity X remains constant. In the following expressions, m is mass, v is velocity, P is pressure, and ρ is density. Which of the expressions could possibly be correct? A B C D 2 Trucks P, Q, and R are at rest side by side. They begin accelerating at the same time. The graph of their acceleration over time is shown below. At time 2t1, which truck(s) will have covered the largest distance? A Truck P B Truck Q C Truck R D Trucks P and Q 3 A hunter aligns his rifle s