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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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Describe the process of DNA replication

DNA replicates via semi-conservative replication . This means one strand acts as the template strand. The enzyme DNA Helicase breaks the hydrogen bonds between base pairs in DNA. This unwinds the DNA, exposi...
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Answered by Joanna D. • Biology tutor
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Why can extreme pH or temperature cause enzymes to denature?

Enzymes are proteins; as such they have a primary, secondary and tertiary structure. Each type of structure helps to hold the enzyme together so that it's substrate - the molecule it specifically binds to - ...
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Answered by Lorissa F. • Biology tutor
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