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Diffusion is the movement of particles (gases and liquids) from an area of high concentration to an area of low concentration. No energy is required (it is a passive process).Osmosis is the movement of wa...

You need to use Pythagoras's theorem which states that for any right angled triangle, a²+b²=c² , where c is the hypotenuse and a and b are the other 2 sides of the triangl...

The index is 2/3 so first of all we can separate this and begin by looking at the 1/3. Fractions as indices mean that you must root the number, in this case we must cube root it because of the 3 in the de...

Sometimes, but definitely not always! Note: it's all dependent on which direction has been assigned '+'. Acceleration is a vector quantity, (the rate of change of velocity), meaning it has both<...