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Evaluate the microeconomic impacts of a sugar tax

This is a possible essay question for a microeconomic exam. Let's first define what a tax is - an ad valorem tax is an indirect tax based on a percentage of the sales price of a good or service. We could als...
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Answered by Julia H. • Economics tutor
24239 Views

Highlight and explain the interest of an harmonic feature from the 2nd mvt. of Schubert's Piano Trio in Bb.

A sense of threat, and possibly even death, is evoked in the movement’s harmonic workings through the tritone. The first explicit tritone interval is exploited in bars 23-4, between A natural and Eb, when th...
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Answered by Bethan R. • Music tutor
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What's the best way to prepare for a speaking exam?

Confidence is key, and confidence comes, more often than not, with practice. Therefore, I would recommend printing out some of the practice questions from the exam board's website (provided their available) ...
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Answered by Alice G. • Spanish tutor
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Describe and explain the photoelectric effect in terms of photons interacting with the surface of a metal.

The photoelectric effect is the emission of electrons from a metal surface when light is incident on it. When a photon (a light particle) hits the metal surface, it interacts with the metal's electrons. The ...
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Answered by Jaime L. • Physics tutor
4654 Views

show that y = (kx^2-1)/(kx^2+1) has exactly one stationary point when k is non-zero.

Stationary points are found by considering the points at which the gradient of the function equal zero. For the above, you need to employ the quotient rule, since both numerator and denominator are f(x), to ...
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Answered by Rob M. • Maths tutor
5835 Views