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1

Which quantity is a vector?

1. Motion, forces and energy  →  1.2. Motion

1. Motion, forces and energy  →  1.1. Physical quantities and measurement techniques

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2

The diagram shows the resultant R of a 3.0 N force and a 4.0 N force that act at a point P. R P 3.0 N 4.0 N The angle between the 3.0 N force and the 4.0 N force can be any value from 0° to 90°. Which value of R is not possible?

1. Motion, forces and energy  →  1.5.1. Balanced and unbalanced forces

1. Motion, forces and energy  →  1.7.2. Work

1. Motion, forces and energy  →  1.6. Momentum

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3

What is measured using a micrometer?

1. Motion, forces and energy  →  1.1. Physical quantities and measurement techniques

4. Electricity and magnetism  →  4.2.2. Electrical current

1. Motion, forces and energy  →  1.3. Mass and weight

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4

Stop-watches are used to time the runners in a race. The stop-watches show the times recorded for the winner and another runner. 00:57:76 min s s winner 01:03:84 min s other runner s What is the difference in time between the winner and the other runner?

1. Motion, forces and energy  →  1.2. Motion

1. Motion, forces and energy  →  1.1. Physical quantities and measurement techniques

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5

Two cameras are a known distance apart. The exact time that a vehicle passes each of the cameras is recorded. What can be obtained from the information?

1. Motion, forces and energy  →  1.2. Motion

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6

A car of weight 11 000 N moves with constant velocity along a horizontal road. A driving force of 5000 N acts on the car. What is the force opposing the motion of the car?

1. Motion, forces and energy  →  1.7.2. Work

1. Motion, forces and energy  →  1.5.1. Balanced and unbalanced forces

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7

A man with an open parachute falls to Earth at constant speed. The following forces act: P the upward force of the parachute on the man Q the upward force of the man on the Earth R the downward force of the Earth on the parachute S the downward force of the man on the parachute Which two forces are a Newton’s third law pair?

1. Motion, forces and energy  →  1.5.1. Balanced and unbalanced forces

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8

The diagram shows a motorcyclist leaning over in order to turn the corner to the left. Which force causes him to turn?

1. Motion, forces and energy  →  1.5.5. Turning effect of forces

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9

An object weighs 40 N on Earth, where the gravitational field strength is 10 N / kg. The object is taken to a planet where the gravitational field strength is 4.0 N / kg. Which row is correct?

6. Space physics  →  6.1.2. The Solar System

1. Motion, forces and energy  →  1.3. Mass and weight

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10

The diagram shows the equipment used to determine the density of a liquid. 175.03 Which equation is used to calculate the density of the liquid?

1. Motion, forces and energy  →  1.4. Density

1. Motion, forces and energy  →  1.8. Pressure

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11

Which single item can be used to find the centre of mass of a plane lamina of irregular shape?

1. Motion, forces and energy  →  1.5.6. Centre of gravity

1. Motion, forces and energy  →  1.3. Mass and weight

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12

A student makes a model toy which balances on the end of a metal rod. weight weight metal rod Why are the weights needed?

1. Motion, forces and energy  →  1.5.6. Centre of gravity

1. Motion, forces and energy  →  1.3. Mass and weight

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13

An unstretched elastic cord of length 15.0 cm stretches by 4.0 cm when a weight of 6.0 N is suspended from it. The cord does not exceed the limit of proportionality. What is the total length of the cord when the weight is 3.0 N?

1. Motion, forces and energy  →  1.5.3. Elastic deformation

4. Electricity and magnetism  →  4.2.4. Resistance

3. Waves  →  3.2.3. Thin lenses

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14

An object is placed at different depths in liquids of different densities. In which liquid and at what depth is the pressure on the object the greatest?

1. Motion, forces and energy  →  1.4. Density

1. Motion, forces and energy  →  1.8. Pressure

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15

A small vessel of volume 3.0 cm3 contains air at a pressure of 100 kPa. The small vessel is connected to a syringe. The piston is fully inserted into the syringe. 3.0 cm3 100 kPa syringe movement piston The piston is moved slowly to the right so that the air in the syringe has a volume of 12 cm3. The temperature of the air does not change. What is the pressure of the air in the syringe?

2. Thermal physics  →  2.1.2. Particle model

1. Motion, forces and energy  →  1.1. Physical quantities and measurement techniques

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16

A rocket of mass M when empty carries a mass M of fuel. The rocket and fuel travel at speed v. The engine of the rocket is fired and all of the fuel is expelled. The speed of the rocket increases to 2v. What happens to the kinetic energy of the rocket?

1. Motion, forces and energy  →  1.7.1. Energy

1. Motion, forces and energy  →  1.6. Momentum

1. Motion, forces and energy  →  1.2. Motion

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17

A car of mass 1000 kg is driven 200 m up an incline so that it rises 50 m vertically. 200 m 50 m The acceleration of free fall g is 10 m / s2. What is the gain in gravitational potential energy?

1. Motion, forces and energy  →  1.7.1. Energy

1. Motion, forces and energy  →  1.2. Motion

1. Motion, forces and energy  →  1.3. Mass and weight

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18

In which situation is energy being released by the fusion of hydrogen nuclei to form helium?

5. Nuclear physics  →  5.2.4. Fission and fusion

6. Space physics  →  6.2.1. The Sun as a star

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19

The main stages in the operation of a coal-fired power station are listed. They are not in the correct order. The turbine turns a generator. Water in the boiler becomes hot. Steam turns a turbine. Burning coal produces thermal energy. Electromagnetic induction produces electrical energy. Steam is produced. The flow chart shows the first two stages. → → → → → What is the correct order for the remaining stages?

1. Motion, forces and energy  →  1.7.3. Energy resources

4. Electricity and magnetism  →  4.5.6. The transformer

3. Waves  →  3.3. Electromagnetic spectrum

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20

In which situation is there no transfer of energy?

1. Motion, forces and energy  →  1.7.1. Energy

2. Thermal physics  →  2.2.3. Melting, boiling and evaporation

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21

The 200 V battery of an electric car is charged with a current of 33 A for 4.0 hours. The efficiency of the charging process is 90%. How much useable energy is transferred to the battery?

4. Electricity and magnetism  →  4.4.1. Uses of electricity

1. Motion, forces and energy  →  1.7.4. Efficiency

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22

In an experiment to measure the power output of a small steam engine, a known load is lifted by the engine. Which two measuring instruments are also required?

1. Motion, forces and energy  →  1.1. Physical quantities and measurement techniques

4. Electricity and magnetism  →  4.2.4. Resistance

1. Motion, forces and energy  →  1.3. Mass and weight

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23

Four metal containers, with identical dimensions, are filled with water at 90 °C. All the faces, except one, of each container are covered in a very good insulator. The one exposed face on each container is painted either black or white. In which container does the water cool the fastest?

2. Thermal physics  →  2.2.3. Melting, boiling and evaporation

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24

Thermal energy is used to turn water at 100 °C to steam at 100 °C. Which of the following occurs?

2. Thermal physics  →  2.2.3. Melting, boiling and evaporation

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25

The thermal energy produced by an electric heater in three minutes is used to melt wax. The solid wax is initially at its melting point of 60 °C. The specific latent heat of the wax is 220 J / g. The heater supplies 7700 J of thermal energy to the wax. Some of the wax melts. How much wax melts?

2. Thermal physics  →  2.2.2. Specific heat capacity

2. Thermal physics  →  2.2.3. Melting, boiling and evaporation

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26

What always happens when the temperature increases?

2. Thermal physics  →  2.1.2. Particle model

2. Thermal physics  →  2.2.1. Thermal expansion of solids, liquids and gases

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27

Which row explains why a liquid has a fixed volume but does not have a fixed shape?

1. Motion, forces and energy  →  1.8. Pressure

1. Motion, forces and energy  →  1.4. Density

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28

The air in a sealed can is heated. Which statement explains the increase in pressure inside the can?

2. Thermal physics  →  2.2.3. Melting, boiling and evaporation

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29

The diagram shows how the height above the ground of a rope transmitting a wave varies with distance from the source of vibrations at one instant in time. height above ground / cm distance from source / cm What is the amplitude of the wave shown...

3. Waves  →  3.1. General properties of waves

3. Waves  →  3.4. Sound

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30

A vibrator produces 12 wavelengths on the surface of water in 10 s. The spacing between the first crest and the third crest is 60 cm. What is the speed of the wave?

3. Waves  →  3.1. General properties of waves

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31

The diagram shows a ray of light incident on the boundary between two mediums W and X. The mediums have different refractive indexes. W X z y Some light is reflected and some passes along the surface between the two mediums. Angle y is greater than angle z. Which statement is correct?

3. Waves  →  3.2.1. Reflection of light

3. Waves  →  3.2.2. Refraction of light

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32

Light enters a glass block at an angle of incidence i and it produces an angle of refraction r in the glass. glass block r i Several different values of i and r are measured, and a graph is drawn of sin i against sin r. Which graph is correct?

3. Waves  →  3.2.2. Refraction of light

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33

A converging glass lens is used to produce a virtual, magnified image. Which ray diagram shows the rays passing through the converging lens?

3. Waves  →  3.2.3. Thin lenses

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34

A metal lightning conductor is placed on the top of a tall building. The conductor is connected to Earth. When a charged cloud passes over the building, the metal lightning conductor becomes positively charged. – – – – + + + + + + – cloud tall building lightning conductor What happens to the lightning conductor to produce a positive charge at its top?

4. Electricity and magnetism  →  4.2.1. Electrical charge

4. Electricity and magnetism  →  4.5.4. Forces on a current-carrying conductor

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35

Two insulated and uncharged metal spheres X and Y are touching. A positively charged rod is held near X and then the spheres are moved apart. X now has a negative charge. X Y + + + What is the charge on Y?

4. Electricity and magnetism  →  4.2.1. Electrical charge

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36

A stationary negative charge in an electric field experiences an electric force in the direction shown...

4. Electricity and magnetism  →  4.2.1. Electrical charge

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37

A metal wire of length l and cross-sectional area A has resistance R. A second wire is made from the same metal. It has a length 2l and a cross-sectional area 4A. What is the resistance of the second wire?

4. Electricity and magnetism  →  4.2.4. Resistance

4. Electricity and magnetism  →  4.4.2. Electrical safety

4. Electricity and magnetism  →  4.3.2. Series and parallel circuits

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38

The diagram shows a circuit. A A X Y What effect does closing the switch have on the readings of ammeters X and Y?

4. Electricity and magnetism  →  4.2.4. Resistance

4. Electricity and magnetism  →  4.2.2. Electrical current

4. Electricity and magnetism  →  4.4.2. Electrical safety

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39

A rectangular current-carrying coil is pivoted between the poles of an electromagnet. Which action does not, on its own, increase the size of the turning effect exerted on the coil?

4. Electricity and magnetism  →  4.5.5. The d.c. motor

4. Electricity and magnetism  →  4.5.3. Magnetic effect of a current

4. Electricity and magnetism  →  4.5.4. Forces on a current-carrying conductor

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40

The diagram shows a coil connected to a very sensitive ammeter. A magnet is next to the coil. coil magnet A ammeter Which action results in a zero reading on the ammeter?

4. Electricity and magnetism  →  4.5.5. The d.c. motor

4. Electricity and magnetism  →  4.1. Simple magnetism and magnetic fields

4. Electricity and magnetism  →  4.5.1. Electromagnetic induction

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