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A turning point on a curve will be a point where the curve is flat/horizontal i.e. where it has a gradient of zero. We know that to find the equation for the gradient of a curve we have to differentiate i...

using supply & demand diagram, show that the price of oil will rise due to an increased demand for oil. ceterus paribus assumption being made. can discuss other factors that may or may not make this e...

This is an example of a common Mechanics 1 question. I teach a systematic approach to such questions. 

1. Diagram - dram diagram of the pulley set up

2. Label forces on diagra...

Label the equations 1 and 2 We want to make it so the x are the same number - therefore we have to find a common multiple of 2 and 3 - this is 6 Therefore the equations turn into: 1) 6x + 10y = -8 2) -6x ...

When an object falls down through a fluid (e.g. water, oil, air..) there are usually two forces acting on it. They are the weight force acting downwards and the drag force acting upwards. The weight force...