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Electrical signal, e.g. when you touch something hot, an electrical signal goes from your hand to your brain to tell you to pull your hand away. How do you know it's electrical? Because it's so fast!

The force of gravity decreases very rapidly with distance, since force is inversely proportional to distance² . The Sun is much further away from the Moon than the Earth, so its gravitational a...

A 15% increase means that the £80,000 represents 115% of the original value.

Therefore what we do is:

£80,000=£125% divided by 125 

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A detailed answer to this question would start by defining and explaining the economic term - scarcity and establishing the relationship between our infinite needs and wants and finite resources. This wou...

There are many components of fitness which would benefit an individual's performance in a 100m sprint race, however, the two which I will focus on are explosive power, and flexibility. 

Explosive p...