VJC 2022 Prelim P2

1 VICTORIA JUNIOR COLLEGE 2022 JC2 PRELIMINARY EXAMINATIONS Higher 2 Name : __________________________ CT group : ________________ PHYSICS Paper 2 Structured Questions Candidates answer on the Question Paper. No Additional Materials are required. 9749 / 02 8 – 10 am 2 Hours READ THESE INSTRUCTIONS FIRST Write your name and CT group at the top of this page. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Answer all questions. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use 1 2 3 4 5 6 7 sf units g Total (max. 80) This question set consists of a total of 16 printed pages.

2 Data speed of light in free space, c = 3.00 × 108 m s-1 permeability of free space, µo = 4 × 10-7 H m-1 permittivity of free space, o = 8.85 × 10-12 F m-1 (1/(36)) × 10-9 F m-1 elementary charge, e = 1.60 × 10-19 C the Planck constant, h = 6.63 × 10-34 J s unified atomic mass constant, u = 1.66 × 10-27 kg rest mass of electron, me = 9.11 × 10-31 kg rest mass of proton, mp = 1.67 × 10-27 kg molar gas constant, R = 8.31 J mol-1 K-1 the Avogadro constant, NA = 6.02 × 1023 mol-1 the Boltzmann constant, k = 1.38 × 10-23 J K-1 gravitational constant, G = 6.67 × 10-11 N m2 kg-2 acceleration of free fall, g = 9.81 m s-2

3 Formulae uniformly accelerated motion, s = ut + (½) at2 v2 = u2 + 2as work done on/by a gas, W = pV hydrostatic pressure, p = gh gravitational potential, GM r =− temperature / / 273.15T K T C=  + pressure of an ideal gas 21 3 Nmpc V= mean translational kinetic energy of an ideal gas molecule 3 2E kT= displacement of particle in s.h.m., x = xo sin  t velocity of particle in s.h.m., 22 cos () o o v v t xx   = =  − electric current I Anvq= resistors in series, R = R1 + R2 + … resistors in parallel, 1/R = 1/R1 + 1/R2+ … electric potential, V = Q/4or alternating current/voltage, x = xo sin  t Magnetic flux density due to a long straight wire 0 2 IB d  = Magnetic flux density due to a flat circular coil 0 2 NIB r = Magnetic flux density due to a long solenoid 0B nI= radioactive decay, x = xoexp(-t) decay constant, 1 2 ln2 t =

4 Answer all questions in the spaces provided 1(a) A massive truck is parked along the roadside on a flat surface. Adam pushes the truck, and it does not move. He justifies this by saying that the two forces that he and the truck exert on each other are equal and opposite, so they cancel out each other.