07. Gravitation

[spoiler title="Gravitational Field" open="yes"] Newton’s Law of Gravitation states that the gravitational force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of their separation, i.e. where G is the gravitational constant 6.67 10-11 N kg-2m2, m1 and m2 are the masses and r is the

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14. D.C. Circuits

The Potential Divider Rule Determining the relative brightness of light bulbs using the potential divider rule How Internal Resistance affects brightness of light bulbs

18. Quantum Physics

[accordions autoHeight='true'] [accordion title="1. Particle Nature of Light"] A photon is a quantum of electromagnetic radiation. The energy of a photon is given by E=hf, where h is Planck's constant (6.63 10-34 J s) and f is its frequency. [/accordion] [accordion title="1.1 Photoelectric Effect"] The photoelectric effect is the emission of electrons from a metal surface when electromagnetic radiation of sufficiently high frequency

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20. Nuclear Physics

The Nucleus existence and size demonstrated using the Rutherford -scattering experiment. consists of nucleons (protons and neutrons) isotopes of an element share the same number of protons but different number of neutrons. Nuclear Reactions nuclear reactions involve two or more reactants. represented using the form: for a reaction that releases energy, mass-energy of reactants =

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15. Electromagnetism

[accordions autoHeight='true'] [accordion title="1. Definitions"] The magnetic flux density at a point is defined as the force acting per unit current per unit length of the conductor when the conductor is placed at right angles to the field. One tesla is the uniform magnetic flux density which, acting normally to a long straight wire carrying

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