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The very first thing to do is to read the question twice. Highlight the key words. IB History essay questions can be very short and very broad, or the question can be immensely detailed; either way, it's ...

Pi radians is equal to 180 degrees . Radians are a unit of measurement for angles, just like degrees are, and pi is just the number of radians that makes up that angle. 180 divided by 3 is 60 so we get c...

If the projectile is released at an angle, it will have 2 components: 1. horizontal component of motion and 2. vertical component Horizontally, the projectile is assumed to travel at a constant speed (ie ...

The colour of light is determined by its wavelength. White light is made up of electromagnetic radiation (photons) that spans the range 400nm - 700nm, the visible part of the E.M. spectrum. When white lig...

We write a hyphen in adverbs when they start with по- and finish with -и. For example when we want to say "In Russian" (по-русски) we should use a hyphen. There is an other case when se must use...