Questions And Answers In School Physics

2020·30.9 MB·English

by  Lev Tarasov, Aldina Tarasova

Lev Tarasov Aldina Tarasova
Q U E S T I O N S
A N D A N S W E R S
I N S C H O O L P H Y S I C S
m a
MIR PUBLISHERS MOSCOW

L E V TA R A S OV, A L D I N A TA R A S OVA
Q U E S T I O N S
A N D A N S W E R S
I N S C H O O L P H Y S I C S
MIR PUBLISHERS MOSCOW
TranslatedfromtheRussianbyNicholasWeinstein.
Firstpublished1973.
Revisedfromthe1968Russianedition.
ThiselectronicversiontypesetinLATEXbyDamitrMazanav.
Releasedonthewebbyhttp://mirtitles.orgin2020.
GitRepositoryforobtainingthesourcefiles
https://gitlab.com/mirtitles/tarasov-qasp/
Contents
FromTheEditorOfTheRussianEdition 7
Foreword 9
§1 CanYouAnalyseGraphsRepresentingThe
KinematicsOfStraight-LineMotion? 13
§2 CanYouShowTheForcesAppliedToABody? 21
§3 CanYouDetermineTheFrictionForce? 31
§4 HowWellDoYouKnowNewton’sLawsOfMotion? 37
§5 HowDoYouGoAboutSolvingProblemsIn
Kinematics? 51
Problems 59
§6 HowDoYouGoAboutSolvingProblemsIn
Dynamics? 61
Problems 65
§7 AreProblemsInDynamicsMuchMoreDifficult
ToSolveIfFrictionIsTakenIntoAccount? 67
Problems 73
§8 HowDoYouDealWithMotionInACircle? 77
Problems 89
4
§9 HowDoYouExplainTheWeightlessnessOfBodies? 91
Problems 95
§10 CanYouApplyTheLawsOfConservationOf
EnergyAndLinearMomentum? 99
Problems 115
§11 CanYouDealWithHarmonicVibrations? 119
Problems 126
§12 WhatHappensToAPendulumInAStateOf
Weightlessness? 127
§13 CanYouUseTheForceResolutionMethod
Efficiently? 135
Problems 138
§14 WhatDoYouKnowAboutTheEquilibriumOf
Bodies? 141
§15 HowDoYouLocateTheCentreOfGravity? 149
Problems 155
§16 DoyouknowArchimedes’principle? 159
Problems 165
§17 IsArchimedes’PrincipleValidInASpaceship? 167
§18 WhatDoYouKnowAboutTheMolecular-Kinetic
TheoryOfMatter? 173
§19 HowDoYouAccountForThePeculiarityInThe
ThermalExpansionOfWater? 187
§20 HowWellDoYouKnowTheGasLaws? 189
§21 HowDoYouGoAboutSolvingProblemsOn
GasLaws? 203
Problems 211
§22 LetUsDiscussFieldTheory 215
5
§23 HowIsAnElectrostaticFieldDescribed? 221
§24 HowDoLinesOfForceBehaveNearTheSurface
OfAConductor? 231
§25 HowDoYouDealWithMotionInAUniform
ElectrostaticField? 237
Problems 247
§26 CanYouApplyCoulomb’sLaw? 249
Problems 256
§27 DoYouKnowOhm’sLaw? 259
Problems 267
§28 CanACapacitorBeConnectedIntoA
Direct-CurrentCircuit? 269
Problems 271
§29 Canyoucomputetheresistanceofabranched
portionofacircuit? 275
Problems 280
§30 WhyDidTheElectricBulbBurnOut? 283
Problems 288
§31 DoYouKnowHowLightBeamsAreReflected
AndRefracted? 293
Problems 299
§32 HowDoYouConstructImagesFormedBy
MirrorsAndLenses? 301
§33 HowWellDoYouSolveProblemsInvolving
MirrorsAndLenses? 313
Problems 318
Answers 321

From The Editor Of
The Russian Edition
Itcansafelybeassertedthatnostudentpreparingforanentranceex-
aminationinphysics,foradmissiontoanengineeringinstitutehasyet
openedabooksimilartothisone. Employingtheextremelylively
formofdialogue,theauthorswereabletocomprehensivelydiscuss
almostallthesubjectsinthesyllabus,especiallyquestionsusuallycon-
sidereddifficulttounderstand. Thebookpresentsadetailedanalysis
ofcommonmistakesmadebystudentstakingentranceexaminations
inphysics. Studentswillfindthistobeanexceptionallyclearandin-
terestingtextbookwhichtreatsofcomplicatedproblemsfromvarious
viewpointsandcontainsagreatmanyexcellentillustrationspromoting
adeeperunderstandingoftheideasandconceptsinvolved. Theau-
thorsarelecturersoftheMoscowInstituteofElectronicsEngineering
andarewellacquaintedwiththegeneralleveloftrainingofstudents
seekingadmissiontoengineeringinstitutes;theyhaveyearsofexperi-
enceinconductingentranceexaminations. Theexpertknowledgeof
theauthors,inconjunctionwiththelivelyandlucidpresentation,has
made. Thisaveryusefulstudyguideforstudentspreparingforphysics
examinations.
Prof. G.Epifanov,D.Sc. (Phys. andMath.)