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The diagram shows a measuring device.
For which measurement is this device suitable?
The graph shows how the speed of an object varies with time.
Which row describes the motion of the object at times P and Q?
A concrete block falls vertically from an aeroplane.
The concrete block falls into the sea and sinks.
Which graph shows the vertical motion of the concrete block?
Which quantity is weight an example of?
Which statement about the mass of an object is correct?
A rectangular metal block is 20 cm long.
The cross-sectional area of the block is 25 cm\(^2\).
The mass of the block is 4000 g.
What is the density of the metal?
The diagram shows a beam lying on the ground. End Q is lifted from the ground by the force $F$.
End P of the beam remains on the ground.
The length of the beam is 3.0 m and its weight is 600 N.
The centre of mass of the beam at G is 1.0 m from end P.
What is the size of the force $F$ when it just raises end Q from the ground?
The diagram shows a stand. The stand holds a heavy mass above the bench.
Which two changes would definitely make the stand more stable?
A footballer kicks a stationary football.
His foot is in contact with the ball for 0.050 s.
The mass of the ball is 0.40 kg.
The speed of projection of the ball is 25 m/s.
What is the average force exerted on the ball by his foot?
A woman of mass 50 kg has 81 J of kinetic energy.
What is her speed?
What is the source of the Sun’s energy?
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]
A research submarine is at a depth of 10\,000\,\text{m} below the surface of the sea.
The average density of the water above the submarine is 1030\,\text{kg/m}^3.
The atmospheric pressure at the surface of the sea is 103\,000\,\text{Pa}.
How many times greater is the pressure due to the sea water than the atmospheric pressure?
The diagram shows a mercury barometer. Which height is used as a measurement of atmospheric pressure?
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?
A bimetallic strip is used to control the temperature of electrical appliances. It is made of two different metals fixed together. The diagram shows the shape of the bimetallic strip before and after heating. Which statement is correct?
A student writes three statements about thermocouples.
1 They have a small thermal capacity.
2 They respond very slowly to temperature changes.
3 They can measure temperatures above 500°C.
Which statements are correct?
Four blocks are made from different metals. Each block is heated for five minutes with an identical heater. Assume there is no energy loss from the blocks. The table gives the masses of the blocks and the temperature rises. Which metal has the highest specific heat capacity?
[Table_1]
A scientist measures the air temperature at different heights from the floor in a cave. The results are recorded in the table.
[Table_1]
Why does altering the height affect the temperature of the air?
Four solid spheres made of the same metal are heated to the same temperature. Which sphere initially loses thermal energy by radiation at the greatest rate?
Which row correctly describes light waves?
[Table_1]
A radio transmitter broadcasts at a frequency of 200\, \text{kHz}.
What is the wavelength of these radio waves?
An optical lever is a very sensitive device for detecting small rotations. A lamp sends a narrow beam of light on to a small plane mirror attached to a shaft whose rotation is to be measured. The operation of the device is shown in plan view.
The beam from the lamp reflects from the mirror to give a small spot of light on a scale placed just above the lamp. The shaft and mirror rotate through 1°. The spot of light moves along the scale.
The table shows the angle $\theta$ through which the reflected beam rotates and the conditions required for high sensitivity.
Which row is correct?
A student draws a diagram to illustrate the different sections of a longitudinal wave.
Which labelled section is a rarefaction?
The diagram shows white light passing through a prism.
Which description of what happens as the light passes into the prism is correct?
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_1]
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]
A student sets up four experiments using bar magnets and other metal objects. The N and S poles of the bar magnets are labelled N and S.
1. 
2. 
3. 
4. 
Which pairs attract each other?
Which diagram represents the strength and direction of the magnetic field around a current-carrying conductor? (The direction of the current is into the page.)
Which quantity is defined as the energy transferred by a cell in driving unit charge around a complete circuit?
There is a current in a variable resistor when a potential difference (p.d.) is applied across it. In which situation is the current increased?
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?
Which combination of logic gates gives the truth table shown?
[Table_1: inputs and outputs]
X Y Z
0 0 1
0 1 1
1 0 1
1 1 0
[Image_1: Logic Gate Diagrams A, B, C, D]
The diagram shows an a.c. generator used to power a lamp. The coil rotates in a clockwise direction.
Which magnetic poles are X and Y?
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]
The diagram shows a coil of wire wrapped around a soft-iron rod.
The wire is connected to a d.c. power supply as indicated.
The apparatus is in a region which is totally shielded from the Earth's magnetic field.
A small compass needle is placed at point P.
In which direction does the N pole of the compass needle point?
Which statement is correct for the nucleus of any atom?
The symbol represents a nucleus of zinc. \[ \text{ }^{68}_{30}\text{Zn} \] Which row gives the numbers of protons and neutrons in this nucleus? [Table_1]
The diagram shows a beam of $\beta$-particles passing through a strong electric field. In which direction will the $\beta$-particles be deflected?
Which equation represents the \( \beta \)-decay of lead-209?