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

Which term represents a physical quantity?

2022 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which two units are identical when expressed in terms of SI base units?

2022 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A value for the acceleration of free fall on Earth is given as $(10 \pm 2) \text{ m s}^{-2}$.Which statement is correct?

2022 Summer

MCQ

CH3 - KINEMATICS

Two cables are attached to a bracket and exert forces as shown. What are the magnitudes of the horizontal and vertical components of the resultant ...

2022 Summer

MCQ

CH3 - KINEMATICS

The curved line PQR is the velocity–time graph for a car starting from rest. What is the average acceleration of the car over the first 5 s?

2022 Summer

MCQ

CH3 - KINEMATICS

A ball is thrown horizontally with a speed of 10.0 \text{ ms}^{-1} above horizontal ground. The ball hits the ground after a time of 3.0 s. Air resis...

2022 Summer

MCQ

CH3 - KINEMATICS

An object is moving along the ground in a straight line at a constant speed. Which statement about the resultant force acting on the object is correct...

2022 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Water flows out of a pipe and hits a wall. When the jet of water hits the wall, it has horizontal velocity $v$ and cross-sectional area $A$. The d...

2022 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

A projectile is launched at an angle above horizontal ground and travels through the air. The projectile reaches its maximum height at position X. ...

2022 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

What is a statement of the principle of conservation of momentum?

2022 Summer