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With aid of diagrams, explain the formation of a U shaped valley

U shaped valleys are formed from V shaped valleys. Ice and snow accumulates in the V shaped valley and enters the cracks where it freezes and expands overnight. As the snow melts during the day this relieves...
Answered by • Geography tutor
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Explain 'reversibility' within the SPORT principles

Reversibility within the principles of training suggests skill, strength, endurance and technique can be lost as easily as it can be gain. To improve any part of performance an athlete must train specific sk...
Answered by • Physical Education tutor
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the moon takes 27.3 days (2.36x10^6s) to orbit the earth . Calculate its distance from the earth . Take the mass of the earth to be 5.975x10^24kg.

Use the set formula T 2 =(4Pi^2/GM)R^3 and rearrange for r^3 to give r 3 = T 2 GM/ 4Pi 2 then insert values : r 3 = (2.36x10 6 ) 2 x 6.67x10 -11 x 5.975x10 24 / 4PI 2 = 5.62....x10 25 Then take the cube root...
Answered by • Physics tutor
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How does Shakespeare use setting in the play Hamlet?

To answer an essay question such as this you would need to come up with around 3 or 4 separate examples. You may want to start with the opening scene - the castle cloaked in the darkness of midnight which co...
Answered by • English tutor
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How do you know if a function is odd or even?

For this I would use the whiteboard to draw an even function (i.e cos(x)) and show that if f(x) is even then f(x) = f(-x). I would also show that the function would be symmetrical about the y axis. For an od...
Answered by • Maths tutor
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