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For which one of the following measurements would a micrometer screw gauge be most suitable?
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The speed–time graph represents a journey.
How does the graph show that the distance travelled in section X of the journey is greater than the distance travelled in section Y?
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A car is travelling at a velocity of 2.0 m/s. It accelerates at a constant 0.20 m/s^2 for 2.5 minutes.
What is the final velocity of the car?
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A sphere P, made of steel, has a weight of 10 N on Earth. Another sphere Q, also made of steel, has a weight of 10 N on Mars. The gravitational field strength on Earth is greater than the gravitational field strength on Mars. Which statement is correct?
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A metal ball is attached to a cork and is lowered into a measuring cylinder, pulling the cork into the water, as shown. The mass of the cork is 4.8 g.
What is the density of the cork?
[Image_1: Diagram of a metal ball and cork in a measuring cylinder showing different volumes: 48 cm³, 56 cm³, and 80 cm³]
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A uniform plank rests on a pivot at its centre.
Two children P and Q sit on the plank in the positions shown.
The mass of child P is 25 kg.
The plank is balanced.
What is the mass of child Q?
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The diagram shows three forces acting on an object.
What is the value of the resultant force acting on the object?
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An object with a mass of 0.20 kg moves at 0.20 m/s, as shown.
Which other object has a momentum that is identical to the momentum of this object?
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A stone is dropped from rest at a height of 2.0 m above the surface of a planet. The planet has no atmosphere. The speed of the stone just before reaching the surface of the planet is 3.8 m/s. What is the acceleration of free fall on the planet?
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An electric motor uses 1000 J of electrical energy. It provides 450 J of useful output energy.
What is the efficiency of the motor?
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To calculate the power produced by a force, the size of the force must be known. What else needs to be known to calculate the power?
[Table_1]
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A barometer reads 780 mm Hg. Mercury has a density of $1.36 \times 10^4 \text{ kg/m}^3$.
What is the pressure of the atmosphere in N/m²?
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The diagram shows a mercury barometer. Which height is used as a measurement of atmospheric pressure?
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A student splashes water on to her face. Here are three statements about the effects.
P The water uses energy to evaporate.
Q The water gains energy from the student.
R The face of the student cools.
Which statements are correct?
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When a bridge is built, a gap is left between each concrete slab. Why are these gaps left?
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The specific heat capacity of solid P is greater than that of solid Q. What does this statement mean?
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A student placed a number of ice cubes in a container with a hole in the base. He left them to melt so that the water dripped into a beaker placed on a balance. The student recorded the initial mass of the beaker and the final mass of the beaker and water after five minutes.
The specific latent heat of fusion for water is 334 J/g.
How much energy was absorbed from the surroundings in order to melt the ice?
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The diagram shows four rods. Each rod is made of a different metal.
Wax is used to attach small metal balls at the rod ends P, Q, R, and S.
Each rod is the same size. They are heated uniformly by a Bunsen burner at point X.
As the rods warm up, the wax melts and the balls fall off.
Why does the ball on the silver rod fall first?
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Four cups A, B, C and D contain hot coffee. Which cup keeps the coffee warm the longest? [Table_1]
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Which row correctly describes light waves?
[Table_1]
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The diagram shows part of a diffracted wave pattern. Changes are made to the wavelength and to the gap size to produce a semicircular diffracted wave pattern. Which row produces the required semicircular diffracted wave pattern?
[Table_1]
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Which statement about a thin converging lens is correct?
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The diagram shows white light passing through a prism.
Which description of what happens as the light passes into the prism is correct?
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Which row gives possible values for the speed of sound? [Table_1]
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A police car with its siren sounding is stationary in heavy traffic. A pedestrian notices that, although the loudness of the sound produced does not change, the pitch varies.
Which row describes the amplitude and the frequency of the sound?
[Table]
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A piece of steel is slightly magnetised. It is hit several times with a hammer. What effect will this have on the steel? [Table_1]
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Two soft-iron pins are suspended from the S pole of a bar magnet. Which diagram shows how the pins are deflected?
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A negatively charged plastic rod is brought near to an uncharged metal sphere and held there. What happens when the metal sphere is earthed?
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Which statement defines the electromotive force (e.m.f.) of a cell?
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Four wires are made of the same metal. Which wire has the greatest resistance?
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In which circuit is there just a single lamp lit?
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A student uses four ammeters P, Q, R, and S to measure the current in different parts of the circuit shown.
Which two ammeters read the largest current?
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Which combination of logic gates gives the truth table shown?
[Table_1]:
| inputs | output |
|-------|--------|
| X | Y | Z |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
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A transformer is needed to convert a supply of 240 V a.c. into 4800 V a.c.
Which pair of coils would be suitable for this transformer?
[Table_1]
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The diagram shows part of a long current-carrying conductor.
At which point is the magnetic field strongest?
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A beam of particles moves through a magnetic field. In which situation do the particles experience a magnetic force?
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Which statement is correct for the nucleus of any atom?
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Two beams of radiation, P and Q, enter an electric field as shown.
Which type of radiations are P and Q?
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Which equation represents the \( \beta \)-decay of lead-209?
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