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With the aid of a diagram, describe and explain global pressure system and wind distributions.

Diagram - should include Hadley, Ferrel and Polar cells (with appropriate latitudinal pressure belts) along with trade and prevailing winds from their respective directions. - should be the descriptive part ...
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Answered by Hamish B. • Geography tutor
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How does Donne use poetic techniques to convey emotion in 'Batter My Heart'?

Form and metre are handled in conjunction with imagery to convey the intense spiritual anxieties that are explored in 'Batter My Heart' and Donne's other Holy Sonnets. The speaker's command to 'Batter' his h...
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Answered by Samuel T. • English tutor
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Give the first and second derivative of the function f(x) = 5/x - 9x + 4

Re-write f(x) as f(x) = 5x^(-1) - 9x + 42) Find first derivative as usual - multiply each term by it's power and subtract 1 from the power:f'(x) = (-1)(5x^(-2)) - (1)(9)Simplify to get f'(x) = -5/x^(2) - 9Fi...
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Answered by Harvey B. • Maths tutor
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How do you solve, dy/dx=(x^2+y^2)/xy?

Substitute y/x = z then separate the variables and integrate.
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A diver of mass 60kg stands on the end of a diving board (2m in length). Calculate the upward force exerted on the retaining spring which is 30cm from the start of the diving board.

Here we have a typical moments question. The start of the diving board is the pivot (draw a picture)To answer this question we need to know that sum of the clockwise moments must equal the sum of the anticlo...
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Answered by Sophie A. • Physics tutor
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