Theory

CH11 - ATOMS AND RADIOACTIVITY

A radioactive nucleus contains 138 neutrons. The nucleus emits an \( \alpha \)-particle. How many neutrons are in the nucleus after it has emitted th...

2009 Summer

Theory

CH11 - ATOMS AND RADIOACTIVITY

The graph shows the decay curve for one particular radioactive nuclide. What is the half-life of this nuclide? A. 1.0 day B. 1.5 days C. 2.0 days D. ...

2009 Summer

Theory

CH11 - ATOMS AND RADIOACTIVITY

$^{16}_{7}\text{N}$ is the symbol for a particular nuclide of nitrogen. How many nucleons does this nuclide contain? A 7 B 9 C 16 D 23

2009 Summer

Theory

CH11 - ATOMS AND RADIOACTIVITY

A beam of ionising radiation, containing $\alpha$-particles, $\beta$-particles and $\gamma$-rays, is travelling left to right across the page. A magne...

2009 Summer

Theory

CH11 - ATOMS AND RADIOACTIVITY

Which statement explains the meaning of the half-life of a radioactive substance?A half the time taken for half the substance to decayB half the time ...

2009 Winter

Theory

CH11 - ATOMS AND RADIOACTIVITY

The diagram shows the paths of three different types of radiation, X, Y and Z. Which row in the table correctly identifies X, Y and Z?[Table_1]

2009 Winter

Theory

CH11 - ATOMS AND RADIOACTIVITY

How many neutrons and how many protons are contained in a nucleus of $^{238}_{92}\text{U}$?[Table_1]neutrons | protonsA | 92 | 146B | 146 | 92C | 146 ...

2009 Winter

Theory

CH11 - ATOMS AND RADIOACTIVITY

How many neutrons and how many protons are contained in a nucleus of $^{238}_{92}$U?[Table_1]

2009 Winter

Theory

CH11 - ATOMS AND RADIOACTIVITY

Which statement explains the meaning of the half-life of a radioactive substance?A. half the time taken for half the substance to decayB. half the tim...

2009 Winter

Theory

CH11 - ATOMS AND RADIOACTIVITY

The diagram shows the paths of three different types of radiation, X, Y and Z.Which row in the table correctly identifies X, Y and Z?[Table_1]| | X ...

2009 Winter

Theory

CH1 - MEASUREMENTS AND UNITS

A student wishes to measure accurately the volume of approximately 40 cm³ of water. She has two measuring cylinders, a larger one that can hold 100 c...

2014 Summer

Theory

CH2 - FORCES AND MOTION

Which distance/time graph represents the motion of an object moving at constant speed? [Image_1: Graphs A, B, C, D with axes for distance and time]

2014 Summer

Theory

CH2 - FORCES AND MOTION

The graph shows how the speed of a car changes with time. Which calculation gives the distance travelled by the car in 24 seconds?A. $\left(\frac{14}{...

2014 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

Which instrument is used to compare the masses of objects? A. a balance B. a barometer C. a manometer D. a measuring cylinder

2014 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

A liquid has a volume of $100 \text{cm}^3$ and a mass of $85 \text{g}$.The density of water is $1.0 \text{g/cm}^3$.How does the density of the liquid ...

2014 Summer

Theory

CH3 - FORCES AND PRESSURE

A plane lamina with centre of mass X touches the ground at point P.Which diagram shows the lamina in equilibrium?

2014 Summer

Theory

CH3 - FORCES AND PRESSURE

A student adds weights to an elastic cord. He measures the length of the cord for each weight.He then plots a graph from the results, as shown.What ha...

2014 Summer

Theory

CH4 - FORCES AND ENERGY

Which energy transfer takes place when a matchstick burns?A. chemical to thermalB. chemical to nuclearC. nuclear to chemicalD. thermal to chemical

2014 Summer

Theory

CH4 - FORCES AND ENERGY

Four cars are driven along a road.The table shows the work done by the engine in each car and the time taken by each car.Which engine produces the mos...

2014 Summer

Theory

CH3 - FORCES AND PRESSURE

Which situation is an example of a force acting over a large area to produce a small pressure?A. a builder hammering a nail into a piece of woodB. a c...

2014 Summer