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Explain why the shielding is needed - 2 marks

The shielding absorbs the harmful radiation emitted from the nuclear reactor which prevents from harmful effects like cancer etc …

Explain how Nuclear Fission can lead to a chain reaction - 3 marks

When uranium-235 absorbs a neutron, it becomes unstable and splits into two daughter nuclei, barium and krypton, releasing three free neutrons. …

The Doppler effect in sound wave

The Doppler effect is a phenomenon observed in waves, including sound waves, where there is a perceived change in frequency or wavelength of a wave d…

Evidence of big bang theory

Evidence of big bang theory The Big Bang theory is supported by a wide range of observational evidence from various fields of astronomy, physics, and…

Explain, in terms of neutrons, what is meant by controlled nuclear fission

Controlled nuclear fission refers to the process of splitting the nucleus of an atom into smaller parts in a controlled manner. In this context, neut…

Forces and Motion (O-Levels)

Forces and Motion Acceleration: The rate of change of velocity. It can be calculated from the gradient of a velocity-time graph. Balanced Forc…

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