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(Many students have an intuitive understanding of the photoelectric effect and how it demonstrates quantisation, but it is important when preparing for an exam to be able to explain this clearly and preci...

Ideal op-amps are considered to have infinite open loop gain at any frequency, meaning that in a feedback circuit the output voltage will always be as large as it needs to be to bring the potential differ...

This question requires one to consider how far civil liberties (the common law or ‘residual’ rights of private citizens) protect human rights in the UK and whether the HRA is necessary in upholding these ...

Write y=x²-4x+2k. And m:= (x_m, y_m) for the coordinates of our vertex. We deduce that x_m  is exactly the value of x for which y'=2x-4=0, because m is a minimum p...

The subjunctive in French is a special verb form (called a mood) which is used to express doubt or uncertainty, for example following phrases such as 'je ne pense pas que', 'je doute que', 'je ne crois pa...