Technical Sciences Paper 1 (English)

November 2024 — Grade 12 / Matric — Technical Sciences

Past Paper 2024 Grade 12 English

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🎯 150 marks ❓ 12 questions ⏱️ 3h 📄 16 pages 📝 89 items found 📚 2 topics

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2.1and

Q2— Section header —

Q1— Section header —

1.1The resultant force acting on a body is equal to the ... product of the mass and velocity of the body. rate of change in momentum of the body.

1.2A block is placed on a horizontal surface with negligible friction. Force 2F and 4F are applied simultaneously on the block

1.3A net force net which acts on a body of mass causes acceleration

1.4No work is done on an object its speed is decreased until it comes to rest. it is lifted from the floor to a specific height.

1.5Which ONE of the graphs below best describes the relationship between the viscosity of a fluid and temperature? (2\

1.6the maximum force that can be applied to a body so that the body regains its original form completely up on removal of the force. a force that develops inside a body so that it regains its original shape

1.7The diagram below illustrates some phenomena of light. These physical phenomena are refraction and dispersion reflection and dispersion

1.8Which ONE of the following statements is a defin ition of a transformer? is used to store electric charge.

1.9

1.10The component found in an AC generator slip rings and armature. split rin g and armature.

Q2— Section header —

2.1Name and state the law that explains why the tension experienced by both the car and the bakkie has the same magnitude. (3\

2.2Draw a labelled free body diagram to show ALL the forces acting on the bakkie. (5\

2.3Define the term frictional force (2\ The coefficient of kinetic friction between the road surface and the tyres of the bakkie is 0,45.

2.4Calculate the magnitude of the tension in the tow bar. (4\

2.5The tow bar suddenly becomes detache from the car while the vehicles are still in motion. The coefficient of kinetic friction between the road surface and the tyres of the car is 0,35.

2.5.1Explain what happens to the car after the tow bar has become detache (2\

2.5.2Calculate the magnitude of the acceleration of the car during this motion. (4\ [20] 950 kg 000 N 1 300 kg20

Q3— Section header —

3.1State the principle of conservation of linear momentum in words.

3.2Calculate the velocity of the gun trolley system after the bullet was fired

3.3What type of collision is this Write down only ELASTIC or INELASTIC. Explain the answer WITHOUT any calculation.

3.4he change in velocity of the gun trolley system is noticeably

3.5After the bullet is fired from the gun, it strikes a stationary block of wood horizontally and then comes to rest inside the block, as shown in the diagram below.

3.5.1Calculate the change in momentum of the bullet. (3\

3.5.2Calculate the time taken for the bullet to come to rest if it experiences a net force of 1 000 N. (4\ [18] m = 3,2 kg m = 157 g m = 157 g18

Q4— Section header —

4.1An airport worker needs to transport a passenger bag of mass 30 kg to the aircraft. He decides to load the bag onto a trolley of mass 10 kg and then pulls the handle of the trolley using a force of 50 N at an angle of 30

4.1Draw a labelled free body diagram showing ALL the horizontal forces on the trolley. (2\

4.1Calculate the work done by the applied force on the trolley. (3\

4.2learner participate in an egg and spoon race. After placing an egg of mass 60 g on the spoon

4.2.1Differentiate between the terms energy and power

4.2.2

4.2ravitational potential energy of the egg when it was placed on the spoon (3\

4.2Kinetic energy of the egg when it had fallen exactly half the distance towards the groun

4.2peed at which the egg hits the ground (4\

4.3How would the mechanical energy change if the 60 g egg is replaced with a larger egg of mass 70 g? Write down only INCREASES, DECREASES or REMAINS THE SAME. (1\

Q5— Section header —

5.1Define the term elasticity (2\

5.2What is the significance of understanding Young s modulus of elasticity in industry? (2\

5.3Use the information provided in the graphs and calculate the following:

5.3.1Young s modulus of elasticity for material , when the strain is 2, (3\

5.3.2Young s modulus of elasticity for material , when the strain is 2, (2

5.4What does the difference in the values of the moduli of elasticity for these materials indicate about their nature? (2\ 5. For material

5.5.1 Elastic region (1\

5.5.2 Point at which the material breaks (1\ [13] en-GB0 en-GBStress (Pa\ Strain en-GBA13

Q6— Section header —

6.1State Pascal law in words. (2\

6.2The area of piston and piston are 0,625 cm

6.3bird with a mass of 27 g dives into water at point until it reaches the bottom at point

6.3.1Write down ONE physical factor that determine the pressure of a static fluid at a given depth.

6.3.2Calculate the pressure that is exe rted by the water on the bird at point

Q7— Section header —

7.1Name and define the phenomenon of light that takes place inside the diamond.

7.2Consider angles and

7.2How does the magnitude of compare to that of Write down only SMALLER THAN, EQUAL TO or GREATER THAN.

7.2.2Explain the answer to QUE STION 7.2.1. The critical angle for diamond is 24,4

7.3Explain the statement above (2\

7.4At the diamond air interface ray exits the diamond.

7.4.1Write down the name of r ay (1\

7.4.2Write down ALL the chan ges that occur at the diamond air inter face as light ray exits the diamond.

Q8— Section header —

8.1A certain news channel broadcasts at a frequency of 94,5 Hz.

8.1.1What type of electromagnetic wave is used to broadcast at this news channel? (1\

8.1.2Calculate the energy of this electromagnetic wave. (3\

8.2Consider the diagram below of a certain type of lens with an object placed at

8.2.1Label and

8.2.2Identify the type of lens that is used in this diagram

8.3The object is now moved to a position between and 2F .3 .1 Where will the image be formed?

3.2Write down THREE properties of the image formed. [12 en-GBA 2F

9.1The specifications of a capacitor are as follows: 10 V 60 pF

9.1.1Capacitors are seen as batteries of the future. State TWO factors that affect the capacitance

9.1.2Calculate the charge of the capacitor when it is fully charged. 9.

1.3Appliances such as microwave ovens and television sets have large capacitors. Give a reason why such appliances need to be fully discharged before they are serviced.

9.2A speaker with specifications 80 W; 20 V and a light bulb with specifications of 4

2.1Define the term current (2\

9.2.2Calculate the current flowing through the speaker when it is operat ing according to its

9.2.3When a second speaker also with specifications 80 W 20 V is

9.2.4Name ONE component that could have been connected in this ci rcuit to prevent the light bulb from burning out. (1\

9.2.5Ho w should the component named in QUESTION

9.2.4be connected in the circuit? Write down only SERIES or PARALLEL. (1\ [17]17

10.1The table below shows a comparison between motors and generators. Complete the table by writing down only the answer next to the question

10.1.2Energy conversion

10.1.4(4\

10.2State Lenz s law in words. (2\

10.3A transformer with 800 wi ndings on the primary coil is connected to a 0,25 kV power supply. The voltag e on the secondary coil is 18 V

Topics Identified

LeadershipBusiness Plan

Mark Allocation

Total150 marks

Sections20 + 20 + 18 + 13 + 17 + 10 = 98 marks

Paper information

SubjectTechnical Sciences

Year2024

SessionNovember

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages19

Downloads5

Examination context

Decade2020s

Years ago2y

SeasonSpring (SH)

Start dayTuesday

Exam periodNovember 2024

Days since exam721

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