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How should I go about analysing a primary source?

A source is a first-hand piece of evidence that historians can use to find out about the past. Examples include: eyewitness accounts, letters, diaries, photographs, cartoons, posters etc. It might be help...

Answered by Bethany B. • History tutor

15301 Views

Explain how a mutation in DNA could cause a non functioning enzyme to be formed

A mutation could change the order of DNA bases which would alter the type of amino acid produced from a DNA triplet. Therefore, the enzyme, which is a pr...

Answered by Hannah W. • Biology tutor

8993 Views

Here is a right-angled triangle (base = 8cm and height = 9cm) and a rectangle (length = 16cm). The area of the rectangle is 6 times the area of the triangle. Work out the width of the rectangle.

Area of triangle is 0.5 x base x height.
0.5 x 8 x 9 = 36
Area of rectangle is 6 x 36 = 216
Area of rectangle is also 16 x width
16 x width = 216
(Divide both sides by 16)
w...

Answered by Harry W. • Maths tutor

12575 Views

How can I recognise a work from the 20th Century?

It can sometimes be difficult to distinguish between works of the Romantic period and those of the 20th Century. This is largely owing to the themes of intense emotion that characterise works of both peri...

Answered by William M. • Music tutor

3927 Views

Imagine a probe in space. Argon gas can be fired from the probes fuel tanks to propel the probe. Discuss whether conservation of momentum applies and whether the speed of the probe increases.

With these long answer questions the examiners want to see both the quality of your English and your knowledge of the topic. Typically, this means using key words and phrases. The numbers in the brackets ...

Answered by Aran M. • Physics tutor

2213 Views