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How does the heart pump oxygenated blood around the body?

Blood that has been used up by the body (deoxygenated) enters the right side of the heart via a large vein known as the superior vena cava. It enters the right atrium from the top, which then contracts an...

Answered by Amber M. Biology tutor
3323 Views

Explain why a jet fighter pilot experiences "weightlessness" when at the top of a loop-the-loop manoeuvre.

The the pilot will experience two forces acting upon him in opposing directions: gravity and centripetal force. The centripetal force will act outwards from the jet's circular path i.e. towards space; gra...

Answered by Isaac F. Physics tutor
3792 Views

find dy/dx when y=x^3 + sin2x

so this question is asking you to differentiate x3 + sin2xwe know that xn differentiates do nxn-1, so using that x3 will differentiate to 3x2we know ...

Answered by Maths tutor
3983 Views

Discuss lines 90-136 from Act 1 Scene 3 of ‘Hamlet’. Explore Shakespeare’s use of language and it’s dramatic effects.

In Act 1, Scene 3 of ‘Hamlet’, Polonius is warning Ophelia to distance herself from Hamlet, to avoid risking the family’s honourby losing her chastity. Shakespeare uses blank verse to ennoblehis Polonius ...

Answered by Deepali F. English tutor
16027 Views

Explain why compounds of Fe^2+ are coloured in solution. (4 marks)

Fe2+ has an electron configuration of 1s22s22p63s23p63d6. When the ligands of the solution bind to the metal ion the d-orbitals...

Answered by Ben G. Chemistry tutor
3325 Views

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