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The diagram shows two identical spheres placed beside a ruler.
What is the radius of one sphere?
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The graph shows how the distance travelled by a vehicle changes with time.
Which row describes the speed of the vehicle in each section of the graph?
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573
A stone falls freely from the top of a cliff. Air resistance may be ignored.
Which graph shows how the acceleration of the stone varies with time as it falls?
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A student writes about mass and weight. Which statement is correct?
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A student uses a measuring cylinder and a balance to find the density of oil. The diagram shows the arrangement used.
[Image_1: Empty measuring cylinder on balance with mass \(m_1\) and measuring cylinder containing volume \(V\) of oil on balance with mass \(m_2\)].
Which calculation gives the density of the oil?
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Each diagram shows all the forces acting on an object.
In which diagram is the object in equilibrium?
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The diagrams show a spring and a graph of the length of the spring against the load applied to it. What is the extension of the spring when a load of 40N is applied to it?
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A force is applied to a long crowbar so as to move a large rock. Which labelled arrow represents the smallest force needed to move the rock?
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What is the main energy change taking place in the battery of a mobile phone (cell phone) as it is being charged but not used?
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Electricity can be generated using different energy resources.
Which energy resource is used to generate electricity without needing any moving parts?
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A child runs up a set of stairs four times. The time taken for each run is recorded.
Which time is measured when the child's useful power is greatest?
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The diagrams show the actual sizes of the heels of four different shoes, as seen from underneath the shoe.
Which heel is most likely to cause damage to wooden floors?
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The diagram shows an instrument used to measure gas pressure.
What is the instrument called?
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Water can exist in three states: solid (ice), liquid and gas (steam).
In which state, or states, is the motion of the molecules only vibrational?
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Which statement about evaporation is correct?
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A piece of melting ice at $0^{\circ}C$ and a beaker of boiling water are both in a laboratory. The laboratory is at $20^{\circ}C$.
What is happening to the temperature of the melting ice and what is happening to the temperature of the boiling water?
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A liquid-in-glass thermometer is to be calibrated in degrees Celsius.
Where should the bulb of the thermometer be placed to set a fixed point on the temperature scale?
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Aluminium foil is attached to the walls of a warm room in a cold country. This reduces the rate of thermal energy loss from inside the warm room.
Which method or methods of thermal energy transfer are reduced by the foil?
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On a very cold day, a boy puts one hand on the metal handlebars of his bicycle. He puts the other hand on the rubber hand grip.
The metal feels colder than the rubber hand grip, although they are both at the same temperature.
Why is this?
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The box contains a list of four types of waves.
[Image_1: γ-rays, sound, ultraviolet, X-rays]
How many waves in the list are transverse waves?
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Which wave has an amplitude equal to half its wavelength? [Image_1: Graphs of four waves labeled A, B, C, D, showing displacement (in cm) versus distance (in cm)]
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A card with the letter R is made by a student. The letter is drawn on one side, as shown. [Image_1: Diagram showing a card with the letter R on a bench facing a plane mirror.]
A plane mirror is mounted vertically on a bench. The student places the card on the bench so that the letter is upright and facing the mirror.
How does the image formed by the mirror appear to the student?
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A student draws four diagrams to represent light passing from air through a glass block and then back into the air.
The critical angle for the glass is 42°.
In which diagram is the path of the light through the glass block not correct?
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Which part of the electromagnetic spectrum is used to send television signals from a satellite to Earth?
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A girl notices that, when she shouts into a cave, she hears an echo.
Which wave property causes the echo?
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Which property of a sound wave affects the loudness of the sound?
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In two separate experiments, a magnet is brought near to an unmagnetised iron bar. This causes the bar to become magnetised.
Experiment 1:
N magnet S → X iron bar
Experiment 2:
S magnet N → iron bar Y
Which magnetic pole is induced at X and at Y?
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In the diagram, rod R hangs from an insulating thread.
When the positively charged rod Q is brought close to rod R, rod R moves away from rod Q.
Which conclusion can be made from this observation?
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The diagram shows a lamp in a circuit.
Which change to the circuit would increase the current in the lamp?
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An ammeter and an 18 \Omega resistor are connected in series with a battery. The reading on the ammeter is 0.50A.
What is the electromotive force (e.m.f.) of the battery?
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A source of constant electromotive force (e.m.f.) is connected across a light-dependent resistor (LDR).
There is an electric current in the LDR.
The brightness of the light falling on the LDR is reduced.
Which row shows what happens to the resistance of the LDR and what happens to the current?
[Table_1]
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The diagram shows an electric circuit.
When the switch is open, which lamp or lamps are not lit?
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An electric kettle has a metal casing. The cable for the kettle contains a wire that is connected to the earth pin of the plug.
Which danger does this guard against?
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A transformer has an input voltage of 240 V and an output voltage of 12 V.
What is a possible pair of values for the number of turns in the primary coil and the number of turns in the secondary coil?
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An electric current can produce a heating effect and a magnetic effect. Which row shows the effect that a relay uses and one application of a relay? [Table_1]
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A nuclide of sodium can be represented by $^{23}_{11} \text{Na}$.
Which row gives the numbers of particles in a neutral sodium atom?
[Table_1]
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Which is the most effective precaution to reduce the risk when handling, storing or using a radioactive source that emits $\gamma$-rays?
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Radioactive source S emits $\alpha$-particles, $\beta$-particles and $\gamma$-rays. A detector is placed 5cm away from S. A thin sheet of paper is placed as shown in the diagram.
Which emissions from the source can be detected?
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A radioactive source has a half-life of 3.0 days. It emits radiation at a rate of 1200 particles per minute.
At what rate was it emitting radiation 6.0 days earlier?
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