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A Scalar quantity has magnitude, but not direction. For example Speed is a scalar quantity.A Vector quantity has both direction and magnitude. For exampl...
As this is an isolated system and a simple pendulum starting at rest, at maximum height, all the energy is in potential energy. The known equation for potential energy is simply mgh (mass x acceleration d...
This question would be illustrated with the correct diagram to enhance understanding. The question is for 6 marks, so 6 key points need to be made. When the current is switched on, a magnetic field is gen...
Firstly we must remind ourselves of what is meant by critical angle. The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense ...
First, we model the child as a single point particle. Then, we add in arrows representing vectors for the relevant forces: friction, weight and the contact force. We can also assume that the child h...
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