Physics data booklet. First assessment 2016

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1 First assessment 2016

2 Diploma Programme Published February 2014 Published on behalf of the International Baccalaureate Organization, a not-for-profit educational foundation of 15 Route des Morillons, 1218 Le Grand-Saconnex, Geneva, Switzerland by the International Baccalaureate Organization (UK) Ltd Peterson House, Malthouse Avenue, Cardiff Gate Cardiff, Wales CF23 8GL United Kingdom Website: International Baccalaureate Organization 2014 The International Baccalaureate Organization (known as the IB) offers four high-quality and challenging educational programmes for a worldwide community of schools, aiming to create a better, more peaceful world. This publication is one of a range of materials produced to support these programmes. The IB may use a variety of sources in its work and checks information to verify accuracy and authenticity, particularly when using community-based knowledge sources such as Wikipedia. The IB respects the principles of intellectual property and makes strenuous efforts to identify and obtain permission before publication from rights holders of all copyright material used. The IB is grateful for permissions received for material used in this publication and will be pleased to correct any errors or omissions at the earliest opportunity. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior written permission of the IB, or as expressly permitted by law or by the IB s own rules and policy. See IB merchandise and publications can be purchased through the IB store at sales@ibo.org International Baccalaureate, Baccalauréat International and Bachillerato Internacional are registered trademarks of the International Baccalaureate Organization. 4082

3 Contents Fundamental constants 1 Metric (SI) multipliers 2 Unit conversions 3 Electrical circuit symbols 4 Equations Core 5 Equations AHL 8 Equations Options 10

4 Fundamental constants Quantity Symbol Approximate value Acceleration of free fall (Earth s surface) g 9.81 m s 2 Gravitational constant G N m 2 kg 2 Avogadro s constant mol 1 Gas constant R 8.31 J K 1 mol 1 Boltzmann s constant J K 1 Stefan Boltzmann constant W m 2 K 4 Coulomb constant k N m 2 C 2 Permittivity of free space C 2 N 1 m 2 Permeability of free space 7 T m A 1 Speed of light in vacuum c m s 1 Planck s constant h J s Elementary charge e C Electron rest mass kg = u = MeV c 2 Proton rest mass kg = u = 938 MeV c 2 Neutron rest mass kg = u = 940 MeV c 2 Unified atomic mass unit u kg = MeV c 2 Solar constant S W m 2 Fermi radius m 1

5 Metric (SI) multipliers Prefix Abbreviation Value peta P tera T giga G 10 9 mega M 10 6 kilo k 10 3 hecto h 10 2 deca da 10 1 deci d 10 1 centi c 10 2 milli m 10 3 micro 10 6 nano n 10 9 pico p femto f

6 Unit conversions 180 Temperature (K) = temperature (C) light year (ly) = m 1 parsec (pc) = 3.26 ly 1 astronomical unit (AU) = m 1 kilowatt-hour (kwh) = J hc = J m = ev m 3

7 Electrical circuit symbols cell battery ac supply switch voltmeter V ammeter A resistor variable resistor lamp potentiometer light-dependent resistor (LDR) thermistor transformer heating element diode capacitor 4

8 Equations Core Note: All equations relate to the magnitude of the quantities only. Vector notation has not been used. Sub-topic 1.2 Uncertainties and errors Sub-topic 1.3 Vectors and scalars If: = ± then: = + If: = then: = + + If: = then: = = cos = sin Sub-topic 2.1 Motion = + = + = + 2 ( + ) = 2 Sub-topic 2.3 Work, energy and power = = = = power = useful work out = total work in useful power out = total power in Sub-topic 2.2 Forces = = Sub-topic 2.4 Momentum and impulse = = = 2 Impulse = = 5

9 = Sub-topic 3.1 Thermal concepts = = Sub-topic 3.2 Modelling a gas = = = = Sub-topic 4.1 Oscillations = 1 Sub-topic 4.2 Travelling waves = Sub-topic 4.3 Wave characteristics Sub-topic 4.4 Wave behaviour = sin sin = = Constructive interference: path difference = Destructive interference: path difference = ( + ) = Sub-topic 5.1 Electric fields = = = 1 4 = = = Sub-topic 5.3 Electric cells = ( + ) Sub-topic 5.2 Heating effect of electric currents Kirchhoff s circuit laws: = = 0 (loop) = 0 (junction) = = = = = = Sub-topic 5.4 Magnetic effects of electric currents = sin = sin 6

10 Sub-topic 6.1 Circular motion = = = 4 = = Sub-topic 6.2 Newton s law of gravitation = = = Sub-topic 7.1 Discrete energy and radioactivity Sub-topic 7.2 Nuclear reactions = = = Sub-topic 7.3 The structure of matter Charge Quarks Baryon number u c t d s b All quarks have a strangeness number of 0 except the strange quark that has a strangeness number of 1 Charge Leptons 1 e 0 e All leptons have a lepton number of 1 and antileptons have a lepton number of 1 Gravitational Weak Electromagnetic Strong Particles experiencing All Quarks, leptons Charged Quarks, gluons Particles mediating Graviton W +, W, Z 0 Gluons Sub-topic 8.1 Energy sources Power = energy time Power = Sub-topic 8.2 Thermal energy transfer = (metres) = (kelvin) = power total scattered power albedo = total incident power 7

11 Equations AHL Sub-topic 9.1 Simple harmonic motion Sub-topic 9.2 Single-slit diffraction = 2 = = sin ; = cos = cos ; = sin = ±( ) = ( ) = Sub-topic 9.3 Interference = sin Constructive interference: 2 = ( + ) Destructive interference: 2 = = Pendulum: = 2 Mass spring: = 2 Sub-topic 9.4 Resolution = 1.22 = = Sub-topic 9.5 Doppler effect Moving source: = ± Moving observer: = ± = Sub-topic 10.1 Describing fields Sub-topic 10.2 Fields at work = = = = = = = = = = = = = 2 = 8

12 Sub-topic 11.1 Electromagnetic induction = cos = = = Sub-topic 11.2 Power generation and transmission = 2 = 2 = = = Sub-topic 11.3 Capacitance = = = = = = = = = = = = Sub-topic 12.1 The interaction of matter with radiation = = = 13.6 = 2 () = 4 4 Sub-topic 12.2 Nuclear physics = / = = sin 9

13 Equations Options Sub-topic A.1 The beginnings of relativity = = Sub-topic A.3 Spacetime diagrams = tan Sub-topic A.2 Lorentz transformations = 1 1 = ( ) ; = ( ) = ( ) ; = ( = 1 ) = Sub-topic A.4 Relativistic mechanics (HL only) = = = ( 1) = = + = = ( ) ( ) = () () Sub-topic A.5 General relativity (HL only) = = 2 = 1 10

14 Sub-topic B.1 Rigid bodies and rotational dynamics = sin = = = 2 = + = + 2 = + = = Sub-topic B.3 Fluids and fluid dynamics (HL only) = = + = constant + + = constant = 6 = Sub-topic B.2 Thermodynamics = + = = = constant (for monatomic gases) = useful work done = energy input = 1 Sub-topic B.4 Forced vibrations and resonance (HL only) energy stored = 2 energy dissipated per cycle energy stored = 2 resonant frequency power loss Sub-topic C.1 Introduction to imaging 1 = = 1 = = = = + 1 ; = Sub-topic C.2 Imaging instrumentation = Sub-topic C.3 Fibre optics = 1 sin attenuation = 10 log Sub-topic C.4 Medical imaging (HL only) = 10 log = = ln2 = 11

15 Sub-topic D.1 Stellar quantities 1 (parsec) = (arc second) = = 4 Sub-topic D.3 Cosmology = = 1 = Sub-topic D.2 Stellar characteristics and stellar evolution = m K. Sub-topic D.5 Further cosmology (HL only) = 4 3 =

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