2021 SAJC H3 Physics QP

Class Index Number Name 20S ST. ANDREW’S JUNIOR COLLEGE JC 2 2021 Preliminary Examination PHYSICS 9814/01 Paper 1 17th September 2021 3 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, index number and Civics Group on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Section A Answer all questions. You are advised to spend about 1 hour and 50 minutes on Section A Section B Answer two questions only. You are advised to spend about 35 minutes on each question in Section B The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 30 printed pages including this page.

2 SAJC 2021 Preliminary Examination / 9814 Data speed of light in free space c = 3.00 x 108 m s-1 permeability of free space 0 = 4 x 10-7 H m-1 permittivity of free space 0 = 8.85 x 10-12 F m-1 (1/(36)) x 10-9 F m-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 1023 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 Formulae uniformly accelerated motion =s 2 2 1 atut + =2v asu 22 + moment of inertia of rod through one end =I 21 3 ML moment of inertia of hollow cylinder through axis =I ( ) 221 122 +M r r moment of inertia of solid sphere through centre =I 22 5 MR moment of inertia of hollow sphere through centre =I 22 3 MR work done on/by a gas =W Vp hydrostatic pressure =p gh gravitational potential = r Gm− Kepler’s third law of planetary motion 2 =T 234 a GM temperature T/K = T/C + 273.15 pressure of an ideal gas p =  2 3 1 cV Nm mean translational kinetic energy of an ideal gas molecule =E kT2 3

3 SAJC 2021 Preliminary Examination / 9814 displacement of particle in s.h.m. x = x0 sin  t velocity of particle in s.h.m. v = v0 cos  t = 22 xxo − electric current I = Anvq resistors in series R = R1 + R2 + … resistors in parallel 1/R = 1/R1 + 1/R2 + … capacitors in series 1/C = 1/C1 + 1/C2 + … capacitors in parallel C = C1 + C2 + … energy in a capacitor U = 21 2CV electric potential V = r Q o4 electric fie