Theory

CH11 - ATOMS AND RADIOACTIVITY

The table below gives details about some radioactive substances.[Table_1](a) Which of these substances has the greatest number of particles in the nuc...

2012 Summer

5

Theory

CH11 - ATOMS AND RADIOACTIVITY

The apparatus for investigating the absorption of the emissions from a radioactive source is shown in Fig. 11.1.The source and detector are about 2 cm...

2012 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) The symbol for an $\alpha$-particle is either $^4_2\alpha$ or $^4_2\text{He}$.(i) What does the 4 indicate about an $\alpha$-particle?...............

2012 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) Complete the following definition of radioactive half-life.The half-life of a radioactive substance is the time taken for ...........................

2011 Summer

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

The following table includes some of the properties of alpha, beta and gamma radiations.Complete the table by filling in the missing properties.[Table...

2009 Summer

3

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) A particular radioactive source is known to emit either $\alpha$-particles or $\beta$-particles.Describe an experiment involving a solid absorber ...

2012 Summer

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

Fig. 12.1 represents a neutral atom.(a) What name do we give to(i) the central mass, ....................................................................

2012 Summer

4

Theory

CH11 - ATOMS AND RADIOACTIVITY

The count-rate from a sample of radioactive material is investigated by a team of scientists in a laboratory.(a) With the radioactive sample in place,...

2011 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) Complete the plot of the decay curve, for times up to $t = 12$ minutes. Draw the best curve through your points. [3](b) From your graph find:(i) t...

2009 Winter

2

Theory

CH11 - ATOMS AND RADIOACTIVITY

(a) What is meant by \textit{radioactive decay}? ................................................................. ....................................

2012 Winter

2

MCQ

CH1 - MEASUREMENTS AND UNITS

A cylindrical can is rolled along the ruler shown in the diagram. The can rolls over twice.What is the circumference (distance all round) of the can?

2012 Summer

1

MCQ

CH2 - FORCES AND MOTION

A car is moving downhill along a road at a constant speed. Which graph is the speed/time graph for the car? [Graph Options A, B, C, D]

2012 Summer

2

MCQ

CH2 - FORCES AND MOTION

In a race, a car travels 60 times around a 3.6 km track. This takes 2.4 hours.What is the average speed of the car?

2012 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

Which quantity is measured in newtons?

2012 Summer

1

MCQ

CH3 - FORCES AND PRESSURE

A geologist places a small rock on the left-hand pan of a balance. The two pans are level as shown when masses with a total weight of 23N are placed o...

2012 Summer

2

MCQ

CH1 - MEASUREMENTS AND UNITS

A stone has a volume of 0.50 cm3 and a mass of 2.0 g. What is the density of the stone?

2012 Summer

3

MCQ

CH2 - FORCES AND MOTION

Passengers are not allowed to stand on the upper deck of double-decker buses. [Image_1: Diagram of a double-decker bus showing upper and lower decks]...

2012 Summer

2

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows a handle with three forces, each 100 N, applied to it. The handle is free to move.What is the effect of the forces on the handle?

2012 Summer

3

MCQ

CH4 - FORCES AND ENERGY

In which pair of energy sources are both sources renewable?

2012 Summer

2

MCQ

CH4 - FORCES AND ENERGY

An object on a thread is swinging between X and Z, as shown in the diagram. It is momentarily at rest at X and at Z. An incomplete word equation about...

2012 Summer

3