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How do I calculate negative powers?

The power of a number indicates how many times that number must be multiplied by itself. If the power is a negative, this means that the number (or the base) is a fraction, with the base as a denominator....

Answered by Molly N. • Maths tutor

11248 Views

What is a mole?

A mole is the amount of a substance which contains as many particles (atoms, ions, molecules etc) of the substance as there are carbon atoms in 12g of ¹²C - this is exactly 6.02 × 10²³

Answered by Molly N. • Chemistry tutor

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What is the difference between classical and operant conditioning? Give an example of each.

Classical conditioning is the behavioural process through which the subject will exhibit a behaviour in response to a conditioned stimulus; the conditioned stimulus having previously become associated wit...

Answered by Molly N. • Psychology tutor

6184 Views

What is an MMI?

An MMI is a 'Multiple Mini Interview'. Usually when you take an interview, you would sit at a desk with one to two other people who would ask you questions. This is a similar process, but there are often ...

Answered by Jemma S. • Medical School Preparation tutor

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given that angles A and B are such that, sec^2A-tanA = 13 and sinBsec^2B=27cosBcosec^2B

First of all key elements required for this question is the knowledge or retrival of these equations: tan² + 1 =sec² A tan(A-B) = (tanA-tanB)/(1+tanAtanB) so for the first equation...

Answered by Joshua M. • Maths tutor

11451 Views