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Explain the differences between diffusion, osmosis and active transport.

Diffusion is the movement of particles (gases and liquids) from an area of high concentration to an area of low concentration. No energy is required (it is a passive process).Osmosis is the movement of water...
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Answered by Rikesh M. • Biology tutor
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2 sides of a right-angled triangle are 5cm and 6cm. Calculate the length of the hypotenuse.

You need to use Pythagoras's theorem which states that for any right angled triangle, a 2 +b 2 =c 2 , where c is the hypotenuse and a and b are the other 2 sides of the triangle. Therefore, in this case a an...
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Answered by Rikesh M. • Maths tutor
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What is the value of 64^(2/3)?

The index is 2/3 so first of all we can separate this and begin by looking at the 1/3. Fractions as indices mean that you must root the number, in this case we must cube root it because of the 3 in the denom...
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Answered by Sinead Q. • Maths tutor
10479 Views

Does a negative acceleration always mean that the object is slowing down?

Sometimes, but definitely not always! Note: it's all dependent on which direction has been assigned '+'. Acceleration is a vector quantity , (the rate of change of velocity), meaning it has both magnitude an...
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Answered by Rohan G. • Physics tutor
19446 Views

'The purpose of the novel is to excite the readers' nerves by continually delaying the expected outcome of the plot'. Compare the ways in which authors build tension in two or more of the novels you have studied.

In The Great Gatsby and Great Expectations, F. Scott Fitzgerald and Charles Dickens, respectively, build tension by placing the climax of their novels towards the end of their narratives. The death of Gatsby...
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Answered by Francesca B. • English tutor
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