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The most important thing about structuring any essay is knowing what you think about the question!  Before you work on the specifics of what goes in which paragraph, try to think of a short, one- or tw...

Isotopes of an element exist when the atoms of an element have different numbers of neutrons, or in other words the same atomic number but a different mass number.

Speed is how fast an object is moving, whereas velocity is an objects speed in a given direction.

Step 1: To differentiate an equation there is a simple rule to follow. For y=axⁿ dy/dx=anx^n-1. so for an example y=x³, dy/dx=3x^2. Therefore we just apply thi...