Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The spontaneous and random decay of a radioactive substance involves the emission of either $\alpha$-radiation or $\beta$-radiation and/or $\gamma$-ra...

2009 Summer

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

(a) A sample of a radioactive isotope contains $N$ nuclei at time $t$. At time $(t + \Delta t)$, it contains $(N - \Delta N)$ nuclei of the isotope.Fo...

2009 Summer

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

The gold nucleus $^{185}_{79}\text{Au}$ undergoes alpha decay.What are the nucleon (mass) number and proton (atomic) number of the nucleus formed by t...

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

The nuclei of the isotopes of an element all contain the same number of a certain particle. What is this particle?

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

Alpha, beta and gamma radiations1. are absorbed to different extents in solids,2. behave differently in an electric field,3. behave differently in a m...

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

Two $\alpha$-particles with equal energies are fired towards the nucleus of a gold atom. Which diagram best represents their paths?

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

An $\alpha$-particle A approaches and passes by a stationary gold nucleus N. The path is illustrated in Fig. 7.1.(a) On Fig. 7.1, mark the angle of de...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

Tungsten-184 \( \left( ^{184}_{74}\text{W} \right) \) and tungsten-185 \( \left( ^{185}_{74}\text{W} \right) \) are two isotopes of tungsten.Tungsten-...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The controlled reaction between deuterium $\left(\frac{2}{1}H\right)$ and tritium $\left(\frac{3}{1}H\right)$ has involved ongoing research for many y...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

(a) State what is meant by the decay constant of a radioactive isotope...................................................................................

2009 Winter

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A student creates a table to show reasonable estimates of some physical quantities. Which row is not a reasonable estimate? [Table_1]

2017 Summer

MCQ

CH3 - KINEMATICS

A particle travels in a straight line with speed $v$. The particle slows down and changes direction. The new speed of the particle is $\frac{v}{2}$. ...

2017 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The speed $v$ of a liquid leaving a tube depends on the change in pressure $\Delta P$ and the density $\rho$ of the liquid. The speed is given by the ...

2017 Summer

MCQ

CH3 - KINEMATICS

The values of displacement, velocity and acceleration of a vehicle can be deduced from graphs representing its motion. Often the areas under these gra...

2017 Summer

MCQ

CH4 - DYNAMICS

A ball is released from rest above a hard, horizontal surface. The graph shows how the velocity of the bouncing ball varies with time. At which point...

2017 Summer

MCQ

CH3 - KINEMATICS

A ball is kicked upwards at an angle of 45° to horizontal ground. After a short flight, the ball returns to the ground. It may be assumed that ai...

2017 Summer

MCQ

CH4 - DYNAMICS

The mass of a rocket-propelled truck is approximately equal to the mass of the fuel in its tank. The fuel is ignited and the truck is propelled along ...

2017 Summer

MCQ

CH3 - KINEMATICS

An object is dropped at time $t = 0$ from a high building. Air resistance is significant. Three graphs are plotted against time. The height of the...

2017 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A student attempts to find the density $\rho$ of aluminium by taking measurements of a rectangular sheet. mass $m = 51.6 \pm 0.1$ g length $l = 100.0 ...

2017 Summer

MCQ

CH4 - DYNAMICS

The graph shows how the momentum of a motorcycle changes with time. What is the resultant force on the motorcycle? 

2017 Summer