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How do I structure and what do I include in my OPVL for paper I?

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 sentence ...
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Answered by Athina K. • History tutor
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Explain why people continue to live close to active volcanoes. Use examples in your answer. (5 marks)

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. Thi...
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Answered by Tegan E. • Geography tutor
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Trend in Melting point going down group 1 elements

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 weaker...
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Answered by Amin U. • Chemistry tutor
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When a 470 micro farad capacitor is discharged through a fixed resistor R, the pd across it decreases by 80% in 45 s. Calculate the time constant of the circuit

Using the equation V=V 0 e -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*V 0 . Putting this into the equation above: 0.2=e -...
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Answered by Peter K. • Physics tutor
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The first term of an arithmetic series is a and the common difference is d. The 12th term is 66.5 and the 19th term is 98. Write down two equations in a and d then solve these simultaneous equations to find a and d.

The first step is to recall the formula for arithmetic progressions: u(n) = a + (n-1) d We can then put all the information given in the question into this so u(12) = 66.5 = a + 11d and u(19) = 98 = a + 18d ...
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Answered by Eleanor W. • Maths tutor
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