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

MCQ

CH1 - MEASUREMENTS AND UNITS

Which measuring devices are most suitable for determining the length of a swimming pool and the thickness of aluminium foil? [Table_1]

2022 Summer

MCQ

CH2 - FORCES AND MOTION

A man stands next to a railway track.A train travelling at 40 m/s takes 2.0 s to pass the man.What is the length of the train?

2022 Summer

MCQ

CH2 - FORCES AND MOTION

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 un...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

On the Moon, all objects fall with the same acceleration. Which statement explains this?

2022 Summer

MCQ

CH3 - FORCES AND PRESSURE

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...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

An object on the end of a string moves in a clockwise circular path at constant speed. The diagram shows the object as viewed from above. What is the ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

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 th...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

On the diagram shown, what is the magnitude of the resultant force of the two vectors?[Image: A diagram with two vectors; one vector of 6.0 N upwards ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

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 ...

2022 Summer

MCQ

CH2 - FORCES AND MOTION

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....

2022 Summer