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What do I do if I don't know the answer to the professor's question?

Don't worry, they are doing this on purpose! Oxbridge interviews aren't meant to trick you, but they are meant to test how you cope with new information and working things out on your own. The interviewer wa...
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Is there such a thing as pure, rational knowledge? Would mathematics fall into this category?

This is a classic epistemological question asking you to engage with the debate between rationalists like Descartes and empiricists like Hume. To answer this effectively we need to make clear what the opposi...
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Answered by Tom R. • Philosophy tutor
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How should I structure my essay?

The TSA essay can be very off-putting - unlike normal exams, you can't revise lots of facts and the chances are the questions are not going to match what you've been studying for A levels/IB. But Oxford prof...
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Answered by Tom R. • TSA Oxford tutor
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calculate the resistivity in a 1.2m length of cylindrical wire with radius 1cm. The resistance of the wire is 0.01 kilo Ohms

The primary equation in this calculation is rho = RA/L Where rho is resistivity, A is cross sectional area, L is length, and R is resistance The resistance and length are given in the question. Resistance ho...
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Answered by Calum S. • Physics tutor
4088 Views

What is the first derivative of y=5z(1+2z2)? Is this a minimum, maximum or turning point?

You should not be put off by the algebraic letters used, substituting x's for z's is absolutely fine. For the first part of the question, since the equation involves the product of two terms, there are two w...
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Answered by Tom R. • Maths tutor
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