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Specific question: The hot tub system has a volume of 4.5 m3 and is filled with water at a temperature of 28 °C. The heater transfers thermal energy to the water at a rate of 2.7 kW while a pump circulate...

The term 'rogue state' is often used to denote a state which presents a risk to international stability through its failure to adhere to both domestic and foreign policy norms. Domestically, rogue states ...

This question requires us to make use of the trigonometric identities tan(y)=sin(y)/cos(y) and sin^2y + cos^2y = 1 which are given in the formula sheet of the exam. Since we know that sin(y)/cos(y) can be...

Conclusions can be critical to your overall mark and should never be rushed! The main aim of a conclusion is to bring together everything you have written to come to a judgement. Examiners love originalit...

As with English, prepositions aren't needed in every sentence, however many nouns, verbs and adjectives do require one. Remember: they will affect the rest of a sentence grammatically. However, we can tal...