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To answer this, you need to pick up on the clues in the question. "Ohmic conductor" is explicitly mentioned twice, so this is likely to be important. You should know that for ohmic conductors, p...

Let's use an example, for instance, a pair a trainers in the sale are advertised as having 25% off, and are now a price of £24. How would you find the original price of the trainers before the sale?Firstl...

Rate of reaction is based on collision frequency: chemicals react when molecules come into contact with each other with enough energy to react. If you want to increase the rate of reaction, you need to fi...

The first step is to factorise the equation into two brackets. In this case we get (2x+1)(x-6)Now, for this to be greater than zero we need both brackets to be greater than zero, or both brackets to be le...

The perfect tense is used when in English you would say something has/ hasn't happened: for example, 'she has read the book', 'he hasn't finished it ye...