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Insulin is a hormone released by the pancreas and it helps to control blood glucose levels. In a healthy person, when you have something to eat, the glucose is absorbed and enters your blood stream. In or...

At it's source a river has high gravitational potential energy (GPE) because of it's height above it's base level (generally the sea or a lake). This GPE translates into high velocity and therefore high e...

There are two ways that the idea of ‘Christopher’s book’ functions. 
Firstly, the writing of the book directly conveys Christopher’s attitudes and feelings towards his life - almost like a diary. It ...

One of the most important things to do when answering a question like this is explain the links between your factors. You also need to establish criteria by which the question can be judged. You need to s...

Question: A particle is moving in a straight line with simple harmonic motion. The period of the motion is (3pi/5)seconds and the amplitude is 0.4 metres. Calculate the maximum speed of the particle. ...