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The "si" clause in French can use a few different tenses depending on what kind of hypothesis you want to talk about. There are three main uses that each use a different combination of tenses. <...

In any metal, there are free surface electrons. For these electrons to escape from the surface of a metal, they require a specific amount of energy, called the 'Work Function'. There are many sources of t...

When the string is plucked, waves will travel from the point where it was plucked to the fixed ends, which cannot move and so must be nodes. The waves will reflect, and the superposition of the reflected ...

Using the elimination technique:As we have -2y in both equations we can take the equations away from each other in order to eliminate -2y and create a new linear equation involving only x. this equation w...

Nerve impulses travel along the muscle fibre membrane (sarcolemma). The impulse is carried down into the fibre through T-tubules. Impulses are spread along the sa...