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Tim flies on a plane from London to Tokyo. The plane flies a distance of 9000 km. The flight time is 11 hours 15 minutes. Work out the average speed of the plane in kilometres per hour.

Speed = Distance/TimeSpeed = 9000/11.25Speed = 800 km/h
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Answered by Nicholas E. • Maths tutor
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Describe and explain how the structure of the small intestine is adapted for absorbing the products of digestion.

The small intestine's structure is adapted in two main ways to aid in the absorption of the products of digestion. Firstly, the small intestine's surface is covered in villi which help to increase the surfac...
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Answered by Tom D. • Biology tutor
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Which rule do you have to keep in mind if you want to form a sentence in German?

*The answer is Time Manner Place (TMP). Of course, there are exceptions to this rule, but ideally this is the foundation of basic word order. It relates to adverbs linked to the different aspects TMP. Genera...
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What is a stem cell?

A stem cell is an unspecialised cell that can undergo differentiation to form a specialised cell. Differentiation describes changes that happen to a cell that result in it transforming into a different cell ...
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Answered by Catriona C. • Biology tutor
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How do I know when to use the past preterite or the past imperfect?

This is something that as you use them more, they will come more naturally, but there are a few ways to remember them. In general, the preterite is use for a past action that has been completed and is finish...
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Answered by Ami S. • Spanish tutor
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