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Hiya! So the very first thing we need to do is find the determinant, which is just a fancy word to describe a matrix; for a 2x2 matrix, it's equal to "ad-bc", where: (a b c d) This will give...

In the instant when the DVD is dropped, it will have an acceleration of g, with no drag force acting on it as it is not moving. As the DVD accelerates downwards, the drag force acting on it increases and ...

Efficiency=useful energy /input energy x 100, so for the kettle, efficiency = 65/100 x 100 = 65% efficient. The rest of the energy is wasted as heat energy in the kettle/sound energy.

The way a simple virus invades a cell is with double stranded DNA replication. The virus has a coat of protein covering the DNA, once bound to the side of the cell the virus releases the DNA where it is t...

The way in which an essay is structured makes a huge difference to its effectivity and is one of the key criteria in receiving a good mark. The first crucial component of a successful essay is a good intr...