Physical Sciences Memo 1 (English & Afrikaans)

May-June 2019 — Grade 12 / Matric — Physical Sciences

Memo 2019 Grade 12 Afrikaans Physical Sciences Hub →

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🎯 150 marks 📄 28 pages 📝 72 items found ∑ 2 math symbols 📚 3 topics

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Q1— Section header —

1.1(2\

1.2(2\

1.3(2\

1.4(2\

1.5(2\

1.7(2\

1.8(2\

1.9(2\

1.10(2\ [20]20

Q2— Section header —

2.1.1Notes/ Aantekeninge Mark awarded for label arrow / Punt toegeken vir benoeming pyltjie Do not penalise for length of arrows since drawing is not to scale. / Moenie

2.1.2is moving at con stant speed in a straight line the acceleration is zero the net force (resultant\ acting on it is zero

2.1.3OR/OF (3\ NOTE: 1 mark for formula/equation, 1 mark substitution with zero, 1 mark answer punt vir formule/vergelyking, 1 punt substitusie, 1 p nt antwoord

2.1.4POSITIVE MARKING FROM 2.1.3 / POSITIEWE NASIEN VANAF 2.1.3 OPTION OPSIE 2 = 0 a(3\ a = 0,67 m = ma F cos 4

2.2OPTION 1/ OPSIE 1 planet planet = 1,08 x 10 OPTION 2/ OPSIE 2 = mg 20 = (10\(g\

Q3— Section header —

3.1Motion of an object under the influence of gravity /gravitational force (weight\ only Beweging van voorwe rp slegs onder die invloed van gravitasie /gravitasie krag (gewig\

3.2OPTION 1/ OPSIE 1 Upwards positive/ Opwaarts positief 0 = 9,8\ (1,53\ Downwards positive/ waarts positief +(9,8\ (1,53\

Q4— Section header —

4.1The total linear momentum in a isolated/ closed system remains constant ./ is

4.2OPTION OPSIE {0,45(9\ + 0,20(0\} = (0,45 + 0,20\v v = 6,23 m ball cont 0,45(v

Q5— Section header —

5.1Tension Spanning (1\

5.2There is friction/ tension in the system Daar is wrywing/spanning in die sisteem OR/ Friction/tension is a non conservative force ywing/spanning n nie konserwatiewekrag

5.5OPTION 1/ OPSIE 1 POSITIVE MARKING FROM QUESTIONS 5. POSITIEWE NASIEN VANAF VRAE 5 net + mgsin 712,88 + (70\(9,8\ (sin 30

5.5WHERE EQUATIONS OF MOTION ARE USED :/ WAAR BEWEGINGSvERGELYKING GEBRUIK MAX/ MAKS = ma

5.6POSITIVE MARKING FROM 5.4 POSITIEWE NASIEN VANAF 5.4 712,88\ 1425,76 J Double the

Q5— Section header —

Q6— Section header —

6.1.1x = v 300 = v (10\ NOTE/ LET WEL Accept/ Aanvaar x = v (2\

6.1The ange in frequency (or pitch\ of the sound detected by a listener because the source and the listener have different velocities relative to the medium of sound propagation Die verandering in die frekwensie (of toonhoogte\

6.1Car/source just passes observer Motor beweeg net verby die waarnemer Accept moves away from observer No relative motion between car and observer Car and observer at the same place/position

1.4POSITIVE MARKING FROM 6.1.1 POSITIEWE NAISEN VANF 6.1. OR/ = 849,76 Hz Notes/ Aantekeninge Any other Doppler formula, e.g. / Enige ander Doppler formula b.v

6.2Doppler / Blood flow meter Dopplervloeimeter / bloedvloeimeter Measuring the heartbeat of a foetus Meting van ha rtklop van n fetus

Q7— Section header —

7.1The enced cha aced Die elektriese veld by n punt is die elektrostatiese krag wat per eenheid

7.2is positive The electric field due to q points to the right because is negative. Since the net fie ld is zero, field due to q must point to the left away from q

7.3E = OR 4,8 x 10 The electrostatic force of attraction /repulsion\ between two point charges is directly proportional to the product of the charges and

7.6POSITIVE MARKING FROM 7.2 AND 7.3/ POSITIEWE NASIEN van 7.2 en

7.3YES/ Both charges are equal and positive Beide ladings is gelyk en positief ccept calculation which shows charges the same and positive Aanvaar berekening wat toon dat ladings dieselfde en positief is.

Q8— Section header —

8.1.1The rate at which electrical energy is c onverted (to other forms\ in a circuit The rate at which energy is used /Energy used per second The rate at which work is done

8.1.2R = 24 P = VI 6 = (12\I\ I = 0,5 A P = I 6 = (0,5\ R = 24 P = VI 6 = (12\I\

8.1.3POSITIVE MARKING FROM 8.1.2/ POSITIEWE NASIEN VANAF 8.1.2 OPTION 1/ OPSIE 1 = 12 ext = (R ext

8.1.4POSITIVE MARKING FROM 8.1.3 POSITIEWE NA SIEN VANAF 8.1.3 OPTION 1/ OPSIE 1 V = IR V = I(R +r\ = 0,316(26\

8.1.5OPTION 1/ OPSIE 1 The power rating (output voltage\ of the bulb is 6 W, 12 V. Die gloeilamp is geme rk 6W ; 12 V P =

2.1The total current passes through resistor A For the parallel portion, the current branches, therefore only a portion of the total current passes through resistor C.

8.2.2The current in B is equal to the current in A. The circuit becomes a series circuit. Die stroom in B is gelyk aan die stroom in A. Die stroombaan word n serie stroombaan

Q9— Section header —

9.1Slip rings Sleep ringe (1\

9.2(1\ max/maks rms/wgk 312 = 220,62 V (3\ POSITIVE MARKING FROM 9 POSITIEWE NASIEN VANAF 9.3

9.4.2OPTION 1 OPSIE 1 max /maks max/maks 312 7,8 A POSIT IVE MARKING FROM 9.3 AND 9.4

9.3EN 9.4 OPTION 2 OPSIE 2 ave/gemid rms /wgk rms /wgk 216,83 = 220,62 I rms

Q1— Section header —

10.2OPTION 1 OPSIE 1 E= h = 3,98 x 10 OPTION 2 OPSIE 2 c = f 3 x 10 = f(5 x 10

Q1— Section header —

Q10— Section header —

10.4The increase in intensity increases the number of photons per second Soos die intensiteit toeneem, neem die aantal fotone per sekonde toe. Since each photon releases one electron the number of e jected electrons

Mathematical Content

f(x)trig

Topics Identified

MechanicsElectricityWaves

Mark Allocation

Total150 marks

Sections20 + 11 + 15 + 12 + 12 + 12 = 82 marks

Paper information

SubjectPhysical Sciences

Year2019

SessionMay-June

TypeMemo

PaperPaper 1

LanguageAfrikaans

Pages28

Downloads4

Examination context

Decade2010s

Years ago7y

Season—

Start day—

Exam period—

Days since exam—

About Physical Sciences examination preparation

Grade 12 Physical Sciences combines Physics and Chemistry. Paper 1 covers mechanics, electricity, waves, and optics, while Paper 2 focuses on chemical bonding, organic chemistry, and electrochemistry.

Every available Grade 12 Physical Sciences past paper and memorandum is collected in the Physical Sciences hub at physical-science.freemode.co.za — browse all years, sessions and languages in one place.

How to use this resource for revision

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For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

applying scientific principles

selecting appropriate equations

interpreting scientific information

performing calculations with correct units

explaining scientific reasoning

A practical revision approach

Create a one-page formula sheet and practice deriving units from first principles. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling.

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Corresponding examination paper

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Physical Sciences Paper 1 (Afrikaans) →

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