Which measuring devices are most suitable for determining the length of a swimming pool and the thickness of aluminium foil?
A man stands next to a railway track.
A train travelling at 40 m/ s takes 2.0s to pass the man.
What is the length of the train?
A speed–time graph is used to describe the motion of an object.
Which quantities are calculated from the gradient of the graph and from the area under the
graph?
On the Moon, all objects fall with the same acceleration.
Which statement explains this?
A measuring cylinder contains 30 cm3 of a liquid.
Some more of the liquid is added until the liquid level reaches the 50 cm3
mark.
The reading on the balance increases by 30 g.
What is the density of the liquid?
An object on the end of a string moves in a clockwise circular path at a constant speed. The diagram shows the object as viewed from above.
What is the direction of the resultant force on the object when it is in the position shown?
A beam is pivoted at one end, as shown.
The beam weighs 6.0 N and its weight acts at a point X 40 cm from the pivot.
A force of 4.0 N is applied to the beam causing it to balance horizontally.
In which direction and where is the 4.0 N force applied?
On the diagram shown, what is the magnitude of the resultant force of the two vectors?
Three situations are listed.
1 An object has a resultant force acting on it.
2 A moving object experiences an impulse.
3 An object is decelerating.
In which situations is the momentum of the object changing?
A ball of mass 0.16 kg is moving forwards at a speed of 0.50 m / s. A second ball of mass 0.10 kg is stationary. The first ball strikes the second ball. The second ball moves forwards at a speed of 0.50 m / s.
What is the speed of the first ball after the collision?
A mass hangs vertically from a spring.
The mass is raised to a point P and is then released.
The mass oscillates repeatedly between point P and a lower point Q.
Which energies alternately increase and decrease throughout the oscillations?
A car has 620 kJ of kinetic energy. The car brakes and stops in a distance of 91 m.
What is the average braking force acting on the car?
The diagram shows a deep reservoir formed by a dam.
On what does the pressure at X depend?
A sealed rigid container has a fixed volume. The container is filled with air.
The container is placed in a freezer cabinet and the temperature of the air in the container decreases.
Which row correctly describes what happens to the air in the container?
Two open containers are filled with water at room temperature. The containers have different shapes.
From which container does the water evaporate at the greater rate and how can the rate of evaporation be increased?
The diagram shows a liquid-in-glass thermometer.
A student wishes to check the marking of the upper fixed point on this thermometer.
What should she do?
Water in a beaker gains thermal energy at a rate of 3000 W. The water is at its boiling point.
The specific latent heat of vaporisation of water is 2260 J /g.
How long does it take for 250 g of the water to vaporise?
A glass contains an iced drink on a warm and humid day. Water starts to form on the outside of the glass.
What is the name of the effect by which the water forms?
One end of a copper bar is heated to a high temperature.
Which mechanism is responsible for the transfer of thermal energy to the other end of the copper
bar?
The diagram shows a convection current caused by a piece of ice placed in a beaker of water at room temperature.
Which row correctly compares the temperatures and densities at water points P and Q?
The diagram shows a wave. Which row is correct?
A sound wave is created by a loudspeaker that vibrates backward and forwards 96 000 times
per minute.
The speed of sound is 320 m / s.
What is the wavelength of the sound wave?
A card is placed in front of a plane mirror so that its label is facing the mirror, as shown.
The label is shown.
How does the image of the label formed by the mirror appear to the observer?
A thin converging lens can produce both real and virtual images.
Which row describes a real and a virtual image?
The speed of light in air is 3.0 x 108m / s.
The critical angle for light in a transparent plastic material placed in air is 37ï‚°.
What is the speed of light in the plastic material?
Which part of the electromagnetic spectrum is used by a remote controller for a television?
Which statement correctly compares radio waves and X-rays?
A student counts how many iron pins an electromagnet picks up when its power supply is switched on. Then, she counts how many pins are picked up when the power supply is switched off.
She repeats the experiment using cores made of different materials. The results are shown.
Which core is made out of soft iron?
A plastic rod is brought near to a small plastic sphere suspended from a stand. The sphere is repelled by the rod.
Why is this?
Which unit is equivalent to a volt (V)?
A resistor converts 360 J of energy when there is a current of 3.0A in it. The potential difference across the resistor is 6.0V.
For how long is there this current in the resistor?
The four circuits shown each contain four diodes.
In which circuit is the direction of the current in the resistor always from the red terminal to the black terminal?
The diagram shows a circuit of six identical lamps connected to a battery
Which lamps are the brightest?
A digital circuit is made of two logic gates.
Which row is correct for this digital circuit?
A magnet is dropped vertically through a solenoid. This induces magnetic poles at both ends of the solenoid.
Which magnetic poles are induced at position X in Diagram 1 and Diagram 3?
Which transformer can change a 240V a.c? input into a 15V a.c. output?
What is the purpose of the split-ring commutator in an electric motor?
How do the sizes of the two nuclei produced in a nuclear fission reaction compare to the size of the original nucleus?
Which statement about the radioactive decay of a substance is correct?
The diagram shows a stream of B-particles traveling in a line that passes between the poles of a magnet.
In which direction will the B-particles be deflected by the magnet?