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Why did Ronald Reagan win the 1980 US presidential election?

Reagan's remarkable success resulted from Jimmy Carter's poor record and economic malaise, Reagan's personal charisma and a growing tide of conservatism in America. The 1980 election came after the bleak 197...
CW
Answered by Charles W. • History tutor
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Find the angle at which total internal refraction takes place when light is going from glass to air.

The angle at which this takes place is called the critical angle. We can apply Snell's law in this situation: n 1 sin C1 = n 2 sin (90deg) sin C = n 2 / n 1 If the second medium is air, then n 2 ~1, so sin C...
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Answered by Catherine T. • Physics tutor
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Why can heat only be transferred through a vacuum by radiation, and not conduction or convection? (3)

Heat transfer by conduction and convection works by particles colliding and transferring energy, as there are no particles in a vacuum heat transfer can only occur by radiation. This is because radiation inv...
JW
Answered by James W. • Physics tutor
43604 Views

Explain why an athlete, who has just run a marathon on a summers day, would have higher concentration of ADH (anti-diuretic hormone) in their blood.

The athlete is running a marathon, therefore their muscles are constantly contracting and therefore using up ATP (Energy). ATP is generated through respiration in cells in the human body. Respiration generat...
AN
Answered by Aryan N. • Biology tutor
7029 Views

How do I structure my coursework/ exam essays? Do you have any other tips for essay technique?

APPROACHING ESSAYS : FIRST APPROACH : Really try to think about and dismantle the question. What exactly are you being asked? What would you like to write about? Is there a way you can twist the question so ...
AT
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