No questions found
Which quantity is a scalar quantity?
539
588
543
A student measures the average speed of a cyclist in a race. Which quantities must she measure?
584
539
591
The diagram shows a series of images of a moving object taken at regular intervals. The object is moving from left to right. Which statement describes the motion of the object?
568
583
533
A plastic ball has a mass of 4.0 g and a volume of 20 cm$^3$. There is a crack in the ball's surface. The ball is placed in a bath of water. Water leaks into the ball without changing the volume of the ball and eventually the ball sinks. The density of water = 1.0 g/cm$^3$. Which mass of water has entered the ball when the top of the ball is first level with the water surface?
600
535
567
A satellite orbits the Earth at constant speed in a circular orbit. Which statement is correct?
523
533
519
The diagrams show four identical objects. Each object is acted on by only the forces shown. Which diagram shows an object in equilibrium?
589
535
507
A resultant force \( F \) accelerates a car of mass \( m \) along a straight horizontal road from rest to a speed \( v \) in time \( t \), giving it momentum \( p \). Which pair of relationships for this situation is correct?
538
543
589
The diagram shows part of a rollercoaster ride with the car at different positions.
The car runs freely down from position X to position Y and up the hill on the other side.
What happens to the energy in the kinetic store and the gravitational potential store of the car as it moves from position X to position Y?
500
564
520
A box is initially at rest at the top of a rough slope. The box slides down the slope. The weight of the box is 20 N. The slope is 4.0 m long and 2.0 m high. The box does 10 J of work against friction as it slides down the slope. What is the speed of the box as it reaches the bottom of the slope?
557
500
523
An electric car is charged overnight. In 8.0 hours, 180 MJ of energy is transferred. What is the power of the charger?
513
515
535
An object is at depth $h$ below the surface of a liquid. The pressure due to the liquid at this depth is $p$. The gravitational field strength is $g$. What is the density $\rho$ of the liquid?
599
515
500
Brownian motion is the random motion of particles.
In which states of matter is Brownian motion observed?
561
517
572
The volume of a fixed mass of gas is varied. The temperature remains constant.
Which graph shows how the pressure $p$ of the gas varies with volume $V$?
570
596
531
Liquid evaporates from a beaker.
What happens to the temperature of the remaining liquid and how does this temperature change affect the rate of evaporation?
[Table_1]
538
584
583
Thermal energy $\Delta E$ is supplied to an object of mass $m$ which does not change its state during the heating process. The temperature of the object rises by $\Delta T$. What is the specific heat capacity of the object?
573
570
594
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?
543
509
553
A student writes down some facts about two transverse waves.
Wave 1 has a frequency $f$ and a velocity $v$.
Wave 2 has four times the frequency of wave 1 and is travelling at a velocity of $2v$.
What is the wavelength of wave 2 in terms of $f$ and $v$?
525
535
554
Straight wavefronts on the surface of a ripple tank approach a gap in a barrier. The diagram shows how the wavefronts change shape as they pass through the gap. What is the name of this effect?
517
546
589
Light travels from air into glass.
What is the relationship between the refractive index $n$ of the glass, the angle of incidence $i$ and the angle of refraction $r$?
555
546
516
Which diagram shows the image correctly formed by reflection?
548
554
510
A student passes parallel rays of light through four different converging lenses. He measures the distance $x$ and the distance $y$ for each experiment.
Which lens has the longest focal length?
[Table_1]
546
570
594
The frequency of the microwaves used in a microwave oven is 2400 MHz. What is the wavelength of these microwaves?
500
600
566
Which row gives typical values for the speed of sound in a solid and in a gas?
[Table_1]
521
591
584
A hard magnetic material can be used to make a permanent magnet.
A soft magnetic material can be used to make a temporary magnet.
Which row shows whether iron and steel are hard or soft magnetic materials?
[Table_1]
512
570
582
A power source is connected to a resistor XY. In which directions are the conventional current and the flow of free electrons through the resistor? [Table_1]
576
563
569
Which unit is used to measure electromotive force (e.m.f)?
576
598
571
The graph shows the current–voltage characteristic for a filament lamp. Which statement describes how the resistance of the lamp changes as the voltage increases?
516
597
525
In the diagram, rod R is suspended 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?
536
600
532
The circuit diagram shows a circuit used to run a d.c. motor from an a.c. supply. Which graph shows the current in the motor?
582
545
592
The circuit shown can be completed by inserting components at X and at Y. The completed circuit is a potential divider in which the potential difference across component Y increases when the temperature increases. Which row shows the components X and Y?
549
514
578
A piece of soft iron XY has a coil of wire wound round it.
The N pole of a bar magnet is pulled away from end X which causes an induced current in the coil.
The magnet is now turned round so that the N pole is on the left. It is taken to the other end of the soft iron and the N pole is pushed towards end Y. A new current is induced in the coil.
Which statement is correct?
553
535
530
The diagram shows a wire in the magnetic field between two poles of a magnet.
The current in the wire repeatedly changes between a constant value in one direction and a constant value in the opposite direction, as shown in the graph.
What is the effect on the wire?
526
542
519
A transformer has $N_p$ turns on its primary coil and $N_s$ turns on its secondary coil. The voltage across the primary coil is $V_p$ and the voltage across the secondary coil is $V_s$.
What is the relationship between these four quantities?
550
549
513
A magnesium ion has a double positive charge and a chloride ion has a single negative charge. Which statement is correct?
536
578
596
Which row correctly describes an example of radioactive decay?
[Table_1] describes four different scenarios:
566
542
522
A radioactive isotope of sodium has a half-life of 15h.
The table gives data from an experiment to show how the rate of decay of the isotope varies with time.
The background count rate has not been subtracted from these data.
[Table_1]
What is the background radiation count rate?
572
563
584
What happens in the process of nuclear fission?
512
575
558
The time taken for the Earth to orbit the Sun is approximately 365 days.
The average radius of the Earth’s orbit around the Sun is $1.5 \times 10^8$ km.
What is the average orbital speed of the Earth?
590
508
539
The Sun transfers energy to the Earth through electromagnetic radiation. What are two of the parts of the electromagnetic spectrum to which most of the energy belongs?
549
542
548
How does the Sun produce its energy?
559
502
541
