8/6/2019 ingschemeSoalanKertas2Set3PecutanAkhirFizikSPM2010[1]

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8/6/2019 ingschemeSoalanKertas2Set3PecutanAkhirFizikSPM2010[1]

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Program Pecutan Akhir Fizik SPM 2010 Soalan Kertas 2 Set 3

Prepared by: Mohd Khairul Anuar SMK Seri Mahkota 2

AnswerQ5(a)Theshortestpathbetweeninitialpointstofinalpoint.

(b) (i) Thedirectionofdisplacementoftwostudentsissame.

(ii) DisplacementofstudentBisfurtherthanA.

(c) (i) GradientofthegraphsinDiagram5.2isgreater

(ii) Acceleration

(d) StudentB

(e) v=u+at=0+5(10)=50ms1

AnswerQ6(a)Massisquantityofmatterinasubstance.

(b) (i) Theleveloftheappleintheoilisdeeper.

(ii) Thevolumeofliquiddisplacedbytheappleintheoilisgreater.

(iii) Thedensityofoilissmallerthanthewater

(c) (i) Thevolumeofliquiddisplacedincrease,whenthedensityofliquiddecrease.

(ii) Thehighertheweightoftheapple,thehighertheweightoftheliquiddisplaced.

(d) Archimedessprinciple

(e) Reducethedensityofsubmarinebypumpingwateroutfromthesubmarine.

AnswerQ7(a) Densityofliquid/Depth/Accelerationduetogravity

(b) (i)ThewaterpressureatQisgreater

(ii)PressureatQ=gh=4200x5x10=50000Pa

(c) (i)Differenceinpressure

(ii) WaterlevelatPissameasthewaterlevelinthehousewatertank.

Nodifferenceinpressure.

(d) (i) Placetheconcretetankathigherplace/ontopofhill

Usewaterpump

(ii)

8/6/2019 ingschemeSoalanKertas2Set3PecutanAkhirFizikSPM2010[1]

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Program Pecutan Akhir Fizik SPM 2010 Soalan Kertas 2 Set 3

Prepared by: Mohd Khairul Anuar SMK Seri Mahkota 3

AnswerQ8(a)ElectricalenergyHeatenergy

(b) (i) Q=mc=1.2x4200x(10030)=352800J

(ii) Q=E=Pt

T=E/P=353800/1000=352.8s

(c) (i) Lowdensityofmetal

Lighter/easytocarry

(ii) Lowspecificheatcapacity

Easytoheatup

(iii) Highmeltingpoint

Difficulttomelt

(d)MetalK

AnswerQ9(a)

An

action

that

can

change

shape,

speed,

size,

direction

and

position

of

an

object.

(b) (i) Theareaofsharpnailincontactwiththewoodissmaller

(ii) Thedepthofpenetrationofsharpnailisdeeper

(iii) Pressure

(c) Toreducepressureexertedtotheground.

AnswerQ10a) (i) Theproductsofmassandvelocity

(ii) Zero

Equal//Same

Samemagnitude

Oppositedirection

Principleofconservationofmomentum

(b)

Pushingforcehasaverticalforcecomponent,Fythatactinginsamedirectionwiththeweight.

Theverticalresultantforce, increaseswhere=Weight+Fy. Therefore,biggerpressureexertedontheground

F

Fy=F.Sin

Fx=F.cos

Weight

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Program Pecutan Akhir Fizik SPM 2010 Soalan Kertas 2 Set 3

Prepared by: Mohd Khairul Anuar SMK Seri Mahkota 4

PullingforcehasverticalforcecomponentFythatactinginoppositedirectionwiththeweight.

Hence,theverticalresultantforce, decreaseswhere =WeightFy. Therefore,pressureexertedonthegroundwillreduce.

(c)

Modifications Reasons

Aerodynamicshapeofcar Toreduceairresistance

Addspoileratrearside Toincreasedownforce

Uselargediameterwireofspringasabsorber Toabsorbshocks

Addsafetybelt Toreduceinertiaeffect

Usethreadtyres Toprevent thecarslidesonthewetroad

Installfrontandrearbumper Toreducetheimpulsiveforceduringcollision

AnswerQ11Theeffectofproducingemf/current,whenthereisarelativemotion/cuttingbetweenconductorand

magneticfield

North pole

Themorethebarmagnets,thegreater/largerthedeflectionofthegalvanometer

Themorethebarmagnets,thestrongerthemagneticfieldstrength.

Thestrongerthemagneticfieldstrength,thegreater/largerthedeflectionofthegalvanometer

Stepdowntransformer

1. Whenanalternatingcurrentflowsthroughtheprimarycoil,achangingmagneticfieldwillbeproduced.

2. Thechangingmagneticfieldwillcutthroughthesecondarycoil,3. Analternatingemf/currentofthesamefrequencytobeinducedinthecoil.

F

Fy=F.Sin

Fx=F.cos

Weight

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Program Pecutan Akhir Fizik SPM 2010 Soalan Kertas 2 Set 3

Prepared by: Mohd Khairul Anuar SMK Seri Mahkota 5

Modifications Explanations

Usestrongmagnet. Strongmagnetproducedstrongmagneticfield,whenaconductor

cuttingthroughastrongmagneticfield,highemf/currentwillbe

induced.

Concavepolesof

magnet.

Concavepolesprovidearadialfieldwhichensuresthecuttingof

themagneticfieldisalwaysmaximum.

Coilwithmoreturns. Moreturnsmeanmoreconductorcuttingthroughmagneticfield,

thereforemoreemf/currentisinduced.

Largerareaofcoils. Thelargertheareaofthecoil,themorethemagneticfieldwillbe

cutthrough,thereforemoreemf/currentisinduced.

Wiresarewoundona

softironcorewhichis

calledarmature.

Thearmaturebecomesmagnetizedand increasesthestrengthof

themagneticfield

AnswerQ12(a) (i)AtmosphericpressureistheforceperunitareaexertedagainstasurfacebytheweightofairabovethatsurfaceintheEarth'satmosphere.

(ii)

Pressure ofwater dependsontheheight ofwater level Thehigherthewatertank,thehigherthepressureofwater Water flowfromhigherpressure tolowerpressure Sowatercanfloweasily fromthetank.

(b) (i)P=hg=1000x5x10

=50000Pa@50000kgm1s

2@50000Nm

2

(ii) Watersupplydoesnotflowintothehousetank.

Thewatersupplyflowfromhigherpressuretolowerpressure.

Whenthewaterlevelatbothtanksissame,thereisnodifferenceinpressure.

(c)Characteristics Reasons

MaterialisSteel Doesnotrusting

Sizeofcylinderforloadisbiggerthansizeof

cylinder

for

force/handle.

Toensuredifferenceinareasurfaceofpiston

Oilasfluidinhydraulicpump Donotvolatile/Donotvaporizedeasily/High

boilingpoint

Carmustbeonbiggerpistonand handleon

smallerpiston

Toensureonlysmallforceisusedtoliftupthecar

HydraulicpumpPischosenbecauseitusedsteelasmaterial,sizeofcylinderforloadisbiggerthansize

ofcylinderforhandle,oilasfluidandtheloadlocatesonbiggerpistonandhandleonsmallerpiston.