No questions found
A cook wants to prepare some food to be cooked by 1.15p.m. He uses an oven with an automatic timer that can be set to switch on and off at certain times. The oven needs to be switched on for 2 hours 10 minutes. At which time does the oven need to switch on?
504
569
526
The speed-time graph shows the motion of a car.
Which row describes the motion?
582
527
501
A car travels 100 km. The journey takes two hours. The highest speed of the car is 80 km/h, and the lowest speed is 40 km/h.
What is the average speed for the journey?
588
560
547
A metal block has the dimensions shown. Its mass is 1000 g. What is the density of the metal?
580
508
522
A car travels along a horizontal road at a constant speed. Three horizontal forces act on the car.
The diagram shows two of these three forces.
What is the size and the direction of the third horizontal force acting on the car?
582
575
527
The extension-load graph for a spring is shown. The unstretched length of the spring is 17.0 cm.
When an object is hung from the spring, the length of the spring is 19.2 cm.
What is the weight of the object?
522
593
591
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]
549
584
560
A cyclist travels down a hill from rest at point X, without pedalling. The cyclist applies his brakes and the cycle stops at point Y.
Which energy changes have taken place between X and Y?
553
599
535
The diagram shows a manometer with one side connected to a gas cylinder and the other side open to the atmosphere.
Which conclusion can be made using only the information from liquid levels in the manometer?
524
550
503
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?
521
565
516
Small smoke particles suspended in air are viewed through a microscope.
The smoke particles move randomly.
What does this show?
542
584
530
Molecules escape from a liquid during evaporation. The temperature of the remaining liquid changes.
Which molecules escape and how does the temperature change?
[Table_1]
523
560
571
The thermometer in the diagram has no scale.
Where must the bulb be placed so that 0 °C can be marked on the stem?
562
510
521
A solid is heated from room temperature. The graph shows how its temperature changes with time as it is heated constantly.
Between which labelled points on the graph is the substance partly solid and partly liquid?
600
592
557
One method of heat transfer involves the energy travelling at a much greater speed than in other methods. What is the name of this method?
512
503
528
A cupboard is placed in front of a heater. Air can move through a gap under the cupboard.
Which row describes the temperature, and the direction of movement, of the air in the gap?
[Table_1]
558
566
525
The diagrams represent water waves in a tank. Which diagram represents a wave that changes speed?
552
522
566
Which diagram shows how the light from a candle is reflected by a mirror, and shows the position of the image formed?
521
578
510
Radiation from the Sun is dispersed by a prism. The prism does not absorb any of the radiation. Four identical thermometers are placed, one at each of the labelled positions.
In which position does the thermometer show the greatest rise in temperature?
567
510
542
A scientist tries to direct a ray of light in a glass block so that no light escapes from the top of the block. However, some light does escape.
The scientist changes angle X and stops the light escaping from the top. Which row in the table describes the change to angle X and the name of the effect produced?
572
540
574
The frequency of a musical note is increased.
A student hearing the sound detects an increase in which property?
507
524
560
A man holding a starting pistol stands 640 m away from a spectator.
The spectator hears the sound of the starting pistol 2.0 s after seeing the flash from the pistol.
Using this information, what is the speed of sound in air?
543
566
581
Which action will demagnetise a magnetised piece of steel?
569
501
519
An electromagnet with a soft-iron core is connected to a battery and an open switch. The soft-iron core is just above some small soft-iron nails.
The switch is now closed, left closed for a few seconds, and then opened. What do the soft-iron nails do as the switch is closed, and what do they do when the switch is then opened?
533
510
585
What is the unit of electromotive force (e.m.f.)?
523
540
538
Which sample of copper wire has the greatest electrical resistance?
[Table_1: length of wire/m, diameter of wire/mm]
A: 1.0, 2.0
B: 1.0, 4.0
C: 10, 2.0
D: 10, 4.0
577
560
508
The circuit diagram shows a 4.0Ω resistor and an 8.0Ω resistor connected to a 6.0V battery.
What is the current in the 8.0Ω resistor?
542
532
536
The diagram shows a circuit which includes an uncharged capacitor and a switch.
The switch can be moved between position X and position Y.
What happens to the capacitor when the switch is moved to position X, and what happens when the switch is then moved to position Y?
589
593
507
Which component is represented by this circuit symbol?
566
572
584
The diagram shows a 10\(\Omega\) resistor and a 20\(\Omega\) resistor connected in a potential divider circuit.
What is the reading on the voltmeter?
552
509
547
In the circuit shown, only one of the fuses has blown, but none of the lamps is lit.
Which fuse has blown?
527
552
572
A student investigates the force on a bar magnet placed near a current-carrying coil. She carries out three different experiments.
In experiment 1, the magnet is attracted to the coil.
Which row shows what happens in the other two experiments?
590
512
600
Which diagram represents the voltage output of a simple a.c. generator?
563
545
587
A transformer has 400 turns on its secondary coil. An input voltage of 12V is applied to the primary coil, and an output voltage of 120V is induced across the secondary coil.
How many turns are on the primary coil of the transformer?
506
554
561
The diagram shows a cathode-ray tube.
Which electrode should be heated, and which electrode should be positive?
565
598
594
α, β and γ-radiations are emitted by radioactive substances. Which statement is correct?
585
506
571
The nucleus of an americium atom contains 146 neutrons and 95 protons. It decays by emitting an $\alpha$-particle.
How many neutrons and how many protons remain in the nucleus when this form of americium decays?
[Table with options]
557
573
539
Which statement is correct for the nucleus of any atom?
592
577
554
