2024 DHS Promo Physics H2 Questions_P2_final

1 © DHS 2024 9749/02 [Turn over Name: Index Number: Class: DUNMAN HIGH SCHOOL Promotional Examination Year 5 H2 PHYSICS Paper 2 Structured Questions Candidates answer on the Question Paper 9749/02 1 October 2024 1 hour 55 minutes READ THESE INSTRUCTIONS FIRST Write your class, index number and name at the top of this page. 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 in the spaces provided on the question paper. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or if you do not use appropriate units. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Paper 1 MCQ 15 Paper 2 1 8 2 11 3 7 4 10 5 10 6 9 7 20 s.f. - 1 Total 90 This document consists of 19 printed pages and 1 blank page.

© DHS 2024 9749/01 [Turn over Data speed of light in free space c = 3.00 × 108 m s−1 permeability of free space o = 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 K−1 mol−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 © DHS 2024 9749/02 [Turn over Formulae uniformly accelerated motion s ut at 21 2=+ v u as22 2=+ work done on / by a gas W p V= hydrostatic pressure p gh= gravitational potential Gm r =− temperature TT o/ K / C 273.15=+ pressure of an ideal gas Nmpc V 21 3=   mean translational kinetic energy of an E kT3 2= ideal gas molecule displacement of particle in s.h.m. x x t 0 sin= velocity of particle in s.h.m. v v t 0 cos= ( )xx22 0 = − electric current Anvq=I resistors in series R R R12 ...= + + resistors in parallel R R R 211 1 1 ...= + + electric potential QV r04= alternating current / voltage x x t 0 sin= magnetic flux density due to a long straight wire B d 0 2  = I magnetic flux denxity due to a flat circular coil 0 2 NB r = I magnetic flux density due to a long solenoid 0Bn = I radioactive decay ( )x x t 0 exp =− decay constant t 1 2 ln2 =

4 © DHS 2024 9749/01 Answer all the questions. 1 The rotational kinetic energy, RotationalE , and the moment of inertia, I, of a solid metal sphere are given by the f