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This is a 3 marks exam question from the 2016 summer exam with the Edexcel board. The topic tested here is probability. We are given that the probability of having a female teacher is 3 out of 5. This mea...

The easiest structure for you as a student and for the examiner is to separate origins, purpose, values and limitation into four separate paragraphs. Even if one or two of your paragraphs is only a senten...

People continue to live close to active volcanoes for many reasons. For example, people still live close to Mount Vesuvius in Italy because of the fertile soil that is found on the slopes of the volcano. ...

Going down group 1 the period number increases. This means the number of shells increases, leading to a decrease in electrostatic attraction between the positive nucleus and outer most electrons. This wea...

Using the equation V=V₀e^-t/RC where RC is the time constant to be calculated: We know that the pd decreases by 80%, therefore the pd remaining, V is 0.2*V₀. Putting this i...