Top answers

How do you work out the tangent to a circle at a given point on the circle?

(Suppose the coordinates of the point on the circle is (2, 3))To calculate the tangents equation we will first work out it's gradient. The tangent to a circle at a point is perpendicular to the radius of the...
JH
Answered by James H. • Maths tutor
16411 Views

An individual is seated in a darkened room. What would you expect their pupils to look like? A light is shone onto their eyes and a change in their pupils is noted, what change would you expect and why?

In dark/dim conditions the human pupil dilates (diameter increases) to allow more light in.In bright conditions the pupil constricts (diameter decreases) and less light enters the eye.This is through a combi...
TB
Answered by Tom B. • Biology tutor
2930 Views

what exactly is the purpose of a sketchbook and how do I meet the criteria?

Although having good quality artwork in your sketchbook is important, its primary purpose is to support your final pieces. Therefore at least 50% of the page should be writing. The sketchbook is there to exp...
MB
Answered by Madison B. • Art tutor
3564 Views

Express 5/8 as a decimal

Note that 1/4 as a decimal is 0.25, half of this is 1/8 which is 0.125.Multplying this by 5: we get 0.625
JM
Answered by James M. • Maths tutor
4569 Views

What is the difference between an exothermic and endothermic reaction?

Exothermic = A reaction that transfers energy to its souroundings therefore the temperature of the sourounding increases (gets hotter). Can you think of an example? E.g. combustion, neutralisation. As heat i...
PE
4566 Views