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In A level biology exams there is a large focus on data interpretation questions. What is the best way to approach this style of question?

Often this particular style of question ranks amongst the most poorly answered by students. However, it is often very easy to pick up marks without any knowledge of the subject matter whatsoever. The first s...
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Answered by Rory C. • Biology tutor
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A small stone is projected verically upwards from a point O with a speed of 19.6ms^-1. Modeeling the stone as a particle moving freely under gravity find the time for which the stone is more than 14.6m above O

S = 14.7, U = 19.6, V =, A = -g, T = t using s = ut + 1/2 at^2 14.7 = 19.6t + 1/2 -g t^2 1/2 g t^2 - 19.6t + 14.7 = 0 t = (19.6 +- sqrroot(-19.6 2 - 4 * 0.5 * 9.8 * 14.7)) / 2 * 0.5 * 9.8 t = 1 and t = 3 The...
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Answered by Hamish B. • Maths tutor
5111 Views

What properties makes an object stable?

An object will be stable if the centre of mass, the point at which all of the mass of the object is concentrated, is lower to the ground. It will also be stable if there is a wide base. Objects with low cent...
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Answered by Edward A. • Physics tutor
13999 Views

Why does ice float on water?

A substance will float on water if it has a lower density than water. Therefore, ice floats on water simply because it is less dense than water. Water is unlike other substances in terms of changes in densit...
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Did we evolve from apes? What does the term 'common ancestor' really mean?

You are related to all the humans that are currently living on the planet, even if distantly. However, you are more closely related to your first cousin than you are to a classmate of yours. This is because ...
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Answered by Miranda A. • Biology tutor
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