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What is a vector and how do I calculate the 'modulus' of a vector?

A vector is something that has both magnitude and direction. An example of a vector is velocity because it has magnitude and direction. However, speed is not a vector. Th...

Answered by Anya S. • Maths tutor

18703 Views

what kind of questions would I be asked in an interview for a humanities subject at Oxford/Cambridge?

Obviously it depends on the subject that you are applying for but usually they would start off with a challenging yet well-known problem in the field. From there they will probe you in order to see where ...

Answered by Andreas P. • Oxbridge Preparation tutor

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cosx=cos60° what's X between 0 and 360

x=300 because when you draw a y=cos x graph the cos 60 is on the decreasing part of the curve just before 90 degrees crossing zero. Then at 270 its increasing again and its 30 degrees more.

Answered by Omar B. • Maths tutor

9286 Views

This question is about the nervous system. Describe the difference between the function of a receptor and the function of an effector. In your answer you should give one example of a receptor and one example of an effector.

A receptor detects a change in stimuli e.g. eye detects light - An effector carries out a response e.g. muscle

Answered by Samim Y. • Biology tutor

5315 Views

State how you would test a solution for the presence of sulfate ions? Explain, using an ionic equation, what you would expect to observe in the presence of sulfate ions.

You would add barium chloride solution to the sample to be tested. Group II sulfate solubility decreases down the group - with barium sulfate being insoluble. We would expect to see a heavy white precipit...

Answered by Joshua D. • Chemistry tutor

13972 Views