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A wire is approximately 48 cm long and has an approximate diameter of 0.3 mm.
Which measuring instruments can be used to obtain more precise values of the dimensions of the wire?
[Table_1]
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The velocity–time graph for a car is shown.
What is the distance travelled by the car in 35 s?
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522
Which property of a body results from the effect of a gravitational field on its mass?
527
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566
The diagram shows four pieces of laboratory apparatus.
Which pieces of apparatus are used to find the density of a liquid?
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514
A metal rod of length 80 cm is pivoted at point O. Its centre of mass is at its mid-point. Four pulley wheels are indicated by the letter P.
The rod is in equilibrium, as shown.
What is the weight of the rod?
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The diagram shows an object moving at a constant speed in a circular path in the direction shown. A force acts on the object to keep it in the circular path. In which labelled direction does this force act, when the object is in the position shown?
524
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A force $F$ acts on a body of mass $m$ for a time $t$. During this time, the velocity of the body increases from $u$ to $v$.
Which equation relates $F$, $m$, $t$, $u$ and $v$?
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An object falls towards the Earth’s surface.
What happens to the gravitational potential energy and to the kinetic energy of the object? [Table_1]
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554
A skier is pulled up a short straight slope at constant speed by a rope.
The tension in the rope is 100 N and there is a combined frictional and air resistance force of 20 N acting on the skier.
The slope is 10 m long and the skier rises 1.5 m vertically.
How much work is done by the rope pulling the skier up the slope?
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In some situations, a force does work.
Which set of conditions increases the quantity of work done by the force?
[Table_1]
593
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523
A measuring cylinder of cross-sectional area 4.0 cm\(^2\) contains 224 cm\(^3\) of liquid.
The pressure of the liquid at the base of the measuring cylinder due to the liquid is 8800 Pa.
What is the density of the liquid?
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The pressure of a fixed mass of gas in a cylinder is measured. The volume of the gas in the cylinder is slowly decreased. The temperature of the gas does not change.
Which graph shows how the pressure of the gas changes during this process?
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Which statement about evaporation is correct?
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539
Which change in the design of a liquid-in-glass thermometer makes it more sensitive?
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An ice cube of mass 12 g at 0\(^\circ\)C absorbs thermal energy from the surroundings at a rate of 3 J/s. The specific latent heat of fusion of ice is 330 J/g. How long will it take for the ice cube to melt?
582
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591
Which piece of equipment is designed to produce a type of electromagnetic wave?
531
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501
A passing boat causes a floating object on a lake to bob up and down 18 times in 12 s. The wavelength of the wave created by the boat is 48 cm.
What is the velocity of these water waves?
520
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576
Wavefronts are incident on a boundary. What is needed for the wave to refract at the boundary?
597
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524
A person uses a magnifying glass to look at a stamp. Which ray diagram shows a thin converging lens being used to do this?
544
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569
The diagram shows an object in front of a plane mirror.
At which labelled position is the image of the object formed?
565
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The diagram shows the action of a thin converging lens on two rays of light. The rays are from the top of an object O. An inverted image I is formed.
Which name is given to the distance RS?
515
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The diagram shows the air molecules in part of a sound wave at a particular moment in time.
Which statement is not correct?
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The speed of light in a vacuum is $3.0 \times 10^8$ m/s.
Which value is closest to the speed of light in air?
564
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584
A 100 m race is started by firing a gun. The gun makes a bang and a puff of smoke at the same time.
When does the finishing judge see the smoke and when does he hear the bang?
528
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A student is to demagnetise a bar magnet. She tries four different ways.
1 hamming the magnet
2 heating the magnet
3 passing direct current through the magnet
4 placing the magnet in water
Which methods will demagnetise the magnet?
533
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559
A student is investigating a resistance wire.
She measures the current in a 50 cm length of resistance wire.
The student repeats the experiment using a 100 cm length of the same resistance wire.
What is the effect of this change on the current in the circuit and on the resistance of the wire?
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502
A resistor is connected to a cell so that there is a current from the positive terminal of the cell to the negative terminal.
What causes the current in the resistor?
554
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A plastic rod is rubbed with a dry woollen cloth. The rod becomes positively charged.
Which statement is correct?
512
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500
Which combination of the current in a resistor and the time for which it is present results in a charge of 240 C passing through the resistor?
503
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574
Each potential divider is placed in a circuit with a power supply.
Which potential divider makes the potential difference (p.d.) across component Y increase when the light intensity increases?
539
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509
Two resistors, $R_1$ and $R_2$, are connected in series in a circuit, as shown.
The current in the resistors is $I_0$.
Another resistor, $R_3$, is then connected in parallel with $R_2$, as shown.
How do the currents $I_1$ and $I_2$ in the resistors $R_1$ and $R_2$ compare to current $I_0$?
520
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552
The diagram shows a circuit containing a cell, a lamp and two ammeters.
The current reading on ammeter 2 is 0.20 A.
What is the name for this type of circuit and what is the reading on ammeter 1?
537
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The diagram shows how logic gates can be used to monitor the temperature in a refrigerator.
The warning light will come on if the output at Z is 1.
The door R is open, the temperature sensor S is cold and the main system switch T is on.
What is the logic state at Y and what is the state of the warning light?
538
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516
Four small compasses are placed around a solenoid.
A current is now switched on in the solenoid.
Which diagram shows possible new directions of the compass needles?
A, B, C, D are the diagram options.
514
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540
Which metal is used for the core of a transformer?
513
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543
The diagram shows a conducting metal rod PQ in the magnetic field between the N pole and the S pole. The rod is connected to a resistor in a circuit.
In which direction should rod PQ be moved to induce the current $I$ in the direction of the arrow in the circuit?
522
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521
A thin metal foil is placed in a vacuum. $\alpha$-particles are fired at the foil and most go straight through. A very small proportion of the $\alpha$-particles are deflected through large angles. What does this provide evidence for?
529
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The table compares $\alpha$-radiation, $\beta$-radiation and $\gamma$-radiation.
Which row is correct?
[Table_1]
535
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515
A high-voltage power supply is connected to a metal grid and a wire, as shown.
When the radioactive source is placed close to the grid, sparks are observed in the position indicated.
Which statement explains why the sparks are formed?
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A student investigates four different radioactive isotopes. The student places a detector near each radioactive material.
The background count rate is 36 counts per minute throughout the investigation.
The table shows the detector readings at the start and after 8 hours.
Which isotope has a half-life of 4 hours?
[Table_1]
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550
