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Five athletes P, Q, R, S and T compete in a race. The table shows the finishing times for the athletes.
[Table_1]
Which statement is correct?
552
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555
A student investigates the motion of a ball rolling down a slope. The diagram shows the speed $v$ of the ball at different times $t$. Which statement describes the motion of the ball?
571
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590
Which statement about acceleration is correct?
535
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515
Which statement correctly describes the effects of placing a heavy load in a car?
570
563
576
A space probe is taken from the Earth to Mars.
The force of gravity on the surface of Mars is less than the force of gravity on the surface of the Earth.
How do the weight and the mass of a space probe on the surface of Mars compare to their values when the probe is on the surface of the Earth?
[Table_1]
518
590
528
Water has a density of 1000 kg/m3.
A rectangular swimming pool has an average depth of 1.6 m.
The length of the pool is 25 m.
The width of the pool is 10 m.
What is the mass of the water in the swimming pool?
598
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533
A satellite orbits the Earth at constant speed in a circular orbit.
Which statement is correct?
516
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520
Two forces P and Q act on an object.
Which diagram shows the resultant of these two forces?
585
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560
An object is moving at +3.0 m/s.
A force acts on the object.
After a time, the object is moving at -4.0 m/s.
The mass of the object is 5.0 kg.
What is the change in momentum of the body?
587
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600
A car of mass 500 kg is moving at 10 m/s. The engine does work on the car and the speed increases to 16 m/s.
How much work is done by the engine to increase the speed of the car?
503
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The diagram shows a solid block resting on a bench. The dimensions of the block are shown. On which labelled surface should the block rest to produce the smallest pressure on the bench?
515
571
540
An object is 60 cm below the surface of a liquid. The pressure due to the liquid at this depth is 9000 Pa.
What is the density of the liquid?
511
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554
Which row describes the forces between the molecules and the motion of the molecules in a solid?
[Table_1]
595
510
596
Wet clothes are hanging outside to dry. Which condition decreases the rate of evaporation of the water from the clothes?
560
543
575
The diagram shows a liquid-in-glass thermometer.
The design of this thermometer includes the following features.
1. a liquid which expands linearly when it is heated
2. a glass bulb which has a thick glass wall
3. a capillary tube with a very small diameter
Which features increase the sensitivity of the thermometer?
538
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600
The diagrams show four blocks of steel. The blocks are all drawn to the same scale. The same quantity of thermal energy is given to each block. Which block shows the greatest rise in temperature?
556
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514
A room is heated by a radiator. The diagrams X and Y show two possible circulations of hot air, which heat the room.
Which diagram and reason explain the heating of the room by convection?
572
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553
Two copper containers P and Q are filled with hot water.
The diagrams are both drawn to the same scale.
Container P emits more infrared radiation from its surfaces than container Q.
What is a possible reason for this?
502
600
502
The diagram shows a wave.
What are the amplitude and the wavelength of this wave?
589
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583
The frequency of the microwaves used in a microwave oven is 2400 MHz.
What is the wavelength of these microwaves?
518
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506
An object O is placed in front of a plane mirror as shown.
Which row is correct?
582
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520
An intruder alarm sensor detects that a person is warmer than his surroundings. Which type of electromagnetic wave does the sensor detect?
520
570
547
A dolphin sends out a sound wave. An echo returns 0.010 s later from a fish which is 7.5 m from the dolphin.
What is the speed of the sound wave in water?
505
530
538
Four nails A, B, C and D are tested to find which makes the strongest permanent magnet.
One of the nails is placed against a bar magnet and the number of paper clips which the nail can support is recorded.
The bar magnet is then removed and the number of paper clips remaining attached to the nail is recorded. Each nail is tested individually.
Which nail becomes the strongest permanent magnet?
[Table_1]
| number of paper clips attached to the nail | bar magnet present | bar magnet removed |
|---|---|---|
| A | 2 | 0 |
| B | 2 | 1 |
| C | 4 | 3 |
| D | 5 | 2 |
571
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559
A student wants to demagnetise a steel bar. He uses the apparatus shown. He switches on the circuit for a few seconds and then switches off. He finds that the steel bar is still magnetised. What should he do to improve his method?
558
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567
A cloth is used to rub an uncharged plastic rod. Both the rod and the cloth become charged. Why does the plastic rod become negatively charged and the cloth become positively charged?
508
550
561
A student uses the circuit shown to determine the resistance of two identical resistors.
The voltmeter reading is 2.2 V and the ammeter reading is 0.25 A.
What is the resistance of each resistor?
567
517
503
A cell passes a current of 2.0 A in a circuit for 30 s. In this time the cell transfers 120 J of energy.
What is the electromotive force (e.m.f.) of the cell?
535
586
557
The circuit shown contains five lamps J, K, L, M and N. All the lamps are glowing.
One lamp is removed and two other lamps go out.
Which lamp is removed?
520
514
544
What is the effective resistance of the following combination of resistors?
510
540
527
Which symbol represents a NAND gate?
592
583
528
The diagram shows a circuit used to switch on a heater when the temperature drops below a certain value.
Which row shows the components that should be connected at X and at Y?
534
556
513
The diagram shows the magnetic field due to a current in a solenoid.
Where is the magnetic field the strongest?
564
512
571
A beam of electrons is passed through the magnetic field of a magnet. How must the magnet be positioned to deflect the beam in the direction shown?
554
517
574
Uranium-235 can undergo nuclear fission in many ways. Which equation correctly shows a possible fission reaction for uranium-235?
544
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536
A radioactive material has a half-life of 20 days. A sample of the material contains $8.0 \times 10^{10}$ atoms. How many atomic nuclei have decayed after 60 days?
509
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557
A thin sheet of paper is placed between a radioactive source and a radiation detector. The count rate falls to a very low reading.
From this result, which type of radiation is the source emitting?
591
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553
α-particles, β-particles and γ-rays are emitted by radioactive nuclei when they decay.
Which emissions can be deflected by an electric field?
567
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523
