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It can be difficult to make sure that you are answering the question that has been asked of you under the stress of exam conditions. To overcome this I would recommend that you first make a checklist at t...
change everything to sixths. 21/6 - 14/6 = 7/6
For a reaction to occur molecules must collide with energy greater than or equal to the activation energy, in the correct orientation. The factors affecting the rate of a reaction are:Pressure of re...
The common mistake the students make is to simplify the fraction before factorising numerator and denominator. Here, we need to see that the numerator: x^2 - 4 is a difference between squaresMMAnswered by Martina M. • Maths tutor4111 Views
First, we need to see what the important information in this problem is: the mass of the student is irrelevant as the problem focusses on the ball. So we now know that the important information is: m = 40...
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