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Hertz (Hz), or sometimes megahertz if the Hz is very large.

They have the same number of 'free electrons' in their outer ring. They both have 7 free outer electrons, this means that all group 7 elements have 7 free outer electrons.

The first thing that they do is detect a stimulus, this could be a change in temperature or sensation, then once they have done this they convert this into an impulse, which is eventually sent back to the...

First, you add the 5+3 to get 8. Now you know there are 8 'portions' of the £80 needed to be shared out. So £80/8 is 10. Sam needs 5 portions so 5x10=50 and Jack needs 3 portions so 3x£10 is £30.

The approach that I took throughout my GCSEs was P.E.E - point, evidence, explain. 1) Decide the point you are making and summarise this. 2) Find evidence to support your point in the text - your answer m...