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The equation for the volume of a sphere is:v = 4/3 x pi x r^3
from this we can see the information we need to find out is the radius of sphere.
in this example the radius is 2cm. therefore, the...

The rate of reaction typically increases with temperature, as heat provides kinetic energy and more substrate-enzyme collisions. however, going above a certain temperature will cause enzymes to denature a...

First let us consider how we calculate the mean test mark in the first place, we add up the individual test marks of the entire class to give the total test mark then we divide by the number of students. ...

Firstly, read the question and highlight any topic words or sentences that allude to what exactly the examiner is asking of you. Once you have done that, analyse the insert paper provided, by highlighting...

The three subatomic particles are electrons, protons and neutrons. Protons are positively charged and have a relative mass of 1 whilst neutrons are neutral in charge and also have a positive charge of 1. ...