endorsed foredexcelREVISE EDEXCEL AS/A LEVELPhysicsSeries Consultant:Harry SmithAuthors:Steve Woolley and Steve Adamsnote from the publisherIn order to ensure that this resource offers high-qualityis accurate,the official specification and associatedsupport for the associated Pearson qualification,it hasassessment quidance materials are the only authoritativebeen through a review process by the awarding body.source of information and should always be referred toThis process confirms that this resource fully coversthe teaching and learning content of the specificationPearson examiners have not contributed to any sectionsor part of a specification at which it is aimed.It alsoconfirms that it demonstrates an appropriate balancein this resource relevant to examination papers for whichthey have responsibility.and understanding,in addition to preparation forExaminers will not use endorsed resources as a sourceassessment.of material for any assessment set by Pearson.Endorsement does not cover any guidance onEndorsement of a resource does not mean that theassessment activities or processes (e.g.practiceresource is required to achieve this Pearson qualification.questions or advice on how to answer assessmentnor does it mean that it is the only suitable materialquestions),included in the resource nor does itavailable to support the qualification,and any resourceprescribe any particular approach to the teaching orlists produced by the awarding body shall include thisdelivery of a related course.and other appropriate resources.While the publishers have made every attempt to ensurethat advice on the qualification and its assessmentFor the full range of Pearson revision titles across KS2,KS3,GCSE,AS/E Level and BTEC visit:www.pearsonschools.co.uk/reviseALWAYS LEARNINGPEARSON1-to-1Contentspage mateh with鱼WorkbookAS◆A levelTOPIC 6TOPIC IITOPIC I48Lenses and ray diagrams94Specific heat capacity49Lens formulae95Latent heatsPractical skills50Plane polarisation96Pressure and volume of an ideal gasEstimationDiffraction and Huygens'97Absolute zeroconstruction98Kinetic theoryTOPIC 252Using a diffraction grating to99Particles and energy4SUVAT equationsmeasure the wavelength of light100 Black body radiationDisplacement-time,velocity-time43Electron diffractionStandard candlesand acceleration-time graphs54Waves and particles102Trigonometric parallaxScalars and vectors55The photoelectric effectThe Hertzsprung-Russell diagramResolution of vectors56Line spectra and the evStellar life cyclesAdding vectors57Exam Skills 6The Doppler effectProjectiles106 CosmologyFree body diagramsA level107 Exam skills IlクNewton's first and second laws ofTOPIC 7motionTOPIC 1258Impulse and change of momentum12Measuring the acceleration of free59Conservation of momentum in two108 Mass and energyfall109 Nuclear binding energydimensions3Newton's third law of motion60Elastic and inelastic collisionsMomentumNuclear fusionInvestigating momentum changeMoment of a force62Exam Skills 7Background radiationExam skills IAlpha.beta and gamma radiationWorkTOPIC 8Investigating the absorption of18Kinetic energy and gravitational63gamma radiation by leadDescribing rotational motionpotential energyUniform circular motionNuclear transformation equations19Radioactive decay and half-life65Centripetal force and acceleration20 Work and powerExponential decay66Electric field strenathEfficiency67Electric field and electric potentialRadioactive decay calculations22 Exam skills 268Forces between charges120Gravitational potential andTOPIC 369gravitational potential energy23 Basic electrical quantities70Capacitance24 Ohm's lawNewton's law of gravitationEnergy stored by a capacitorGravitational field of a point mass25Conservation laws in electrical72Charging and discharging capacitors123Gravitational potential in a radialcircuits73The time constantfield26Resistors74Exponential decay of charge124Energy changes in a gravitationa27Resistivity75Exam skills 8field28Resistivity measurement25TOPIC 9Comparing electric and29Current equationgravitational fields30E.m.f.and internal resistance76 Describing magnetic fields126Orbits77Forces on moving charges in aExam skills 1232Exam skills 3magnetic field78Electromagnetic induction-relativeTOPIC 13TOPIC 4motion128 Simple harmonic motion33Density and flotation79Changing flux linkage129 Analysing simple harmonic motion34Viscous drag80Faraday's and Lenz's laws130 Graphs of simple harmonic motion35Hooke's lawThe mass-spring oscillator and the36Young modulus82Exam skills 9simple pendulum37Exam skills 432Eneray and damping in simpleTOPIC 5TOPIC IOharmonic oscillators38 Waves83 The Rutherford scattering133 Forced oscillations and resonance39 Longitudinal and transverse wavesexperiment134Driven oscillators40135 Exam skills 13Standing waves84Nuclear notation136 AnswersPhase and phase difference85Electron guns and linear42Superposition and interferenceaccelerators43Velocity of transverse waves on86CyclotronsA small bit of small printstrings87Particle detectorsEdexcel publishes Sample Assessment44 The behaviour of waves at an88Matter and antimatterMaterial and the Specification on itsinterface89The structure of nucleonswebsite.This is the official content andthis book should be used in conjunction45Refraction of light and intensity of90Nuclear energy unitsThe standard modelwith it.The questions in Now try this haveradiation92Particle interactionsbeen written to help you practise everytopic in the book.Remember:the real exam47Exam Skills 593 Exam skills IOquestions may not look like this.Had a look□Nearly thereNailed it!Topic 1S.【.unitsThe s.l.(Systeme International d'Unites)is a globally agreed system of units,with seven base quantities.Base unitsmasskgThese are the base quantities of S.I.with their unitsYou do not need to learn about luminous intensity.lengthmThis set of base units is sufficient for all measurementstimethat we need to make in science.currentWith the exception of the kilogram,base units aretemperatureKprecisely defined in a way that can be replicated in anysuitably equipped physics laboratory.At the momentamount of substancemolthe kilogram is specified by an object,the internationalstandard kilogram,kept in Paris.All other masses arecdultimately compared with this.Derived units for mechanicsDerived units for electricity andAll quantities that we will meet in mechanics canthermodynamicsbe expressed in terms of mass,length and time.All other quantities are measured in terms of theElectricity requires a base electrical unit,thebase units;for example,speed is measured inampere (A).The units of other electrical quantitiesms-.Some of these derived units have their ownare derived from the base units of mass,length,names;for example force is measured in kg ms-2,time and current.For example,potential differencecalled newtons (N),and energy in kg m2s-2,calledis measured in volts,or kg m2s-3A-.joules (J).Thermodynamics requires two further base units,the kelvin(K)for temperature and the mole(mol)for amount of substancetool for checking equationsEquations must be consistent in terms of unitsWorked exampleThis means that the units on both sides of theequation must be the same.If this is not the caseExpress the unit of power,the watt (W).then the equation cannot be correct.This factin base units.(4 marks)gives you a useful tool for checking your workwhen you rearrange or derive equations.Use an equation relating power to other quantities.5=ut+a2mtHowever,consistent units do not mean anequation is correct:Hence the watt has the base units:.m,mass,a base quantity,unit:kilogram,kgThis has consistent units throughout(m2s-2),a,acceleration,has the derived unit ms-2but the equation is incorrect..s,distance,a base quantity,unit:metre,m.t,time,a base quantity,unit:second,sso,in base units,W=kg ms-2ms-=kg m2s-3(kilogram metre squared per second cubed)Now try thisNumerical values (22,etc)have no units.1The work done by applying a force Fthrough a distance s is given by W=Fx s.Express the S.I.unit of work,the joule,in terms of base units.(2 marks)2 Show that kinetic energy (given by E=)and potential energy (given by Ep=mgh)have the same base units.(3 marks)For more about(3 marks)SUVAT see page 4.