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There are two approaches to rationalising a denominator depending on how the denominator appears. First we deal with the simpler case where the surd term is the only term in the denominator. For example: 6/√...

Projectile motion questions are common in A-level physics as they combine the idea of resolving vectors into their components and using the equations of motion ('suvat' equations) to calculate unknown quanti...

Personal statements involve cramming your achievements, hobbies and personality in a mere 4000 characters. At this nerve wracking time it is most likely very difficult to see what you should include or not i...

From the addition formula, we know that: Rcos(x-c) = Rcos(x)sin(c)+Rsin(x)cos(c) Therefore: acos(x)+bsin(x) = Rcos(x)cos(c)+Rsin(x)sin(c) If we equate the coefficients of cos(x) and sin(x) we see that: acos(...

-Velocity is largest at the centre -Acceleration is greatest at the Amplitude -Restoring Force is greatest at the amplitude -Elatsic Potential Energy is greatest at the amplitude -Kinetic Energy is greatest ...