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What are radians and what are they used for?

Radians are a unit of measurement. They work in the same way that we use ounces to measure mass or metres to measure length. Radians are however used to measure angles, the more common unit of measuring angl...
LS
Answered by Linfan S. • Maths tutor
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Analyse the causes of the First World War

The causes of the 1914-1918 First World War can be categorised into militaristic factors, alliances, imperialism and nationalism. The competition between nations to develop superior militaries between Britai...
AL
Answered by Aoife L. • History tutor
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A student reacts 50.0cm^3 of 2.00mol dm^-3 HCl with 25.0cm^3 NaOH. What is the concentration of NaOH?

n(HCl) = 0.05 dm^3 x 2 mol dm^-3 = 0.1 mol Ratio HCl : NaOH = 1 : 1 = 0.1 mol : 0.1 mol c(NaOH) = 0.1 mol / 0.025 dm^3 = 0.4 mol dm^-3
SW
Answered by Sam W. • Chemistry tutor
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Given that y = ((4x+3)^5)(sin2x), find dy/dx

First of all, we have to use the product rule, since two things are multiplied together. The product rule states that d/dx (u*v) = vu' + uv' Let u = (4x+3) 5 v = sin(2x) Now, to find u' and v' we have to fin...
JN
Answered by Juozas N. • Maths tutor
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‘Women struggle to find an identity in a world dominated by men’. By comparing The Great Gatsby with Sister Carrie, discuss how far you agree with this view. (30 Marks)

In America during the late nineteenth and early twentieth centuries, women had a very restricted role within society. Their lack of access to education limited their capability to interact with society in a ...
SO
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