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Draw a graph depicting a skydivers speed against time when jumping from a plane, until he deploys his parachute, explaining the logic of your answer through the forces applicable to the body.

Upon jumping from the plane, the diver experiences three forces; a downward force from his weight; opposed by a lift force (equal to the weight of the air he displaces); and an upward drag force = ½ . (C D. ...
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Answered by Bronagh R. • Physics tutor
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What is the symbolism of the death of Candy's dog in John Steinbeck's 'Of Mice and Men'?

In John Steinbeck's novel 'Of Mice and Men', the death of Candy's dog symbolises the loneliness of the ranch workers, and demonstrates that there is no place for affection or sentimentality in their lives. E...
LC
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Factorise x^2 + 3x -28

[Method 1] The solutions need to add together to make 3 and multiply to make -28. For them to multiply and make a negative number one of the solutions must also be negative and the other positive (so there a...
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Answered by Austin D. • Maths tutor
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Expand 5a(a+3b)

5a x a = 5a 2 5a x 3b =15ab 5a 2 + 15ab
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Answered by Mahnoor K. • Maths tutor
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Explain what the reflex arc is, how it is different to how the central nervous system normally works, and how the arc itself works.

To answer this question, you need to know what the reflex arc is and why we need it. The reflex arc is a pathway of neurones (nerve cells) and their connections (synapses) that doesn't go through the conscio...
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Answered by Lana B. • Biology tutor
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