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

Theory

CH2 - MEASUREMENT TECHNIQUES

(a) State the most appropriate instrument, or instruments, for the measurement of the following. (i) the diameter of a wire of diameter about 1 mm [1...

2009 Summer

Theory

CH4 - DYNAMICS

A ball B of mass 1.2 kg travelling at constant velocity collides head-on with a stationary ball S of mass 3.6 kg, as shown in Fig. 2.1. Frictional ...

2009 Summer

Theory

CH5 - FORCES, DENSITY & PRESSURE

(a) Define the $\emph{torque}$ of a couple.   [2] (b) A torque wrench is a type of spanner for tightening a nut and bolt to a particular to...

2009 Summer

Theory

CH9 - DEFORMATION OF SOLIDS

A spring having spring constant $k$ hangs vertically from a fixed point. A load of weight $L$, when hung from the spring, causes an extension $e$. The...

2009 Summer

Theory

CH15 - SUPERPOSITION

Two sources $S_1$ and $S_2$ of sound are situated 80 cm apart in air, as shown in Fig. 5.1. The frequency of vibration can be varied. The two sourc...

2009 Summer

Theory

CH17 - ELECTRIC FIELDS

Two vertical parallel metal plates are situated 2.50 cm apart in a vacuum. The potential difference between the plates is 350V, as shown in Fig. 6.1.A...

2009 Summer

Theory

CH20 - D.C. CIRCUITS

A network of resistors, each of resistance $R$, is shown in Fig. 7.1.(a) Calculate the total resistance, in terms of $R$, between points(i) A and C,re...

2009 Summer

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

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate how the current in a circuit depends on the arrangement of resistors within the circuit. You have been provide...

2009 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

In this experiment you will investigate the angle of tilt of a bottle when it contains different amounts of water. (a) (i) Use the water supplied to ...

2009 Summer