Gravitational Field due to a Point Mass The gravitational field strength at a point describes how much gravitational force is experienced by a test mass at that point The strength of a gravitationa...
Newton's Law of Universal Gravitation The gravitational force between two masses, e.g., between the Earth and the Sun, is defined by Newton’s Law of Universal Gravitation Newton’s Law of Universal ...
Gravitational Field Strength There is a universal force of attraction between all matter with mass This force is known as the ‘force due to gravity’ or the weight The Earth’s gravitational field is...
Gravitational Fields Generally, a force field is a region of space in which an object will experience a force A gravitational field, therefore, is a region of space in which any object with mass ex...
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Activity & The Decay Constant Since radioactive decay is spontaneous and random, it is useful to consider the average number of nuclei which are expected to decay per unit time This is known as...
The Random Nature of Nuclear Decay Radioactive decay is defined as: The spontaneous disintegration of a nucleus to form a more stable nucleus, resulting in the emission of an alpha, beta or gamma p...
Core Practical 15: Investigating Gamma Radiation Absorption Aim of the Experiment To investigate the absorption of gamma rays by different thicknesses of lead Variables: Independent variable = Thic...
Nuclear Decay Equations Alpha Decay An alpha particle consists of 2 protons and 2 neutrons (It is emitted from large unstable nuclei) When an alpha particle is emitted from a nucleus: The nuc...
