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How would I answer a passage question?

Passage questions appear really tricky from the outset, because you don't know what section of your text you might have to read and what may come up. Luckily, however, these questions actually give you a rea...
TD
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The critical angle for a glass is 41 degrees. Calculate its refractive index.

Firstly we must remind ourselves of what is meant by critical angle. The critical angle is the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense med...
MS
Answered by Marnie S. • Physics tutor
17691 Views

Describe the differences between DNA and RNA?

DNA is: - double stranded- has thymine as a base- longer RNA is:- single stranded- has uracil as a base (instead of thymine)- shorter
MM
Answered by Muhammed M. • Biology tutor
3482 Views

z = -2 + (2root3)i. Find the modulus and argument of z.

The first step to answering this question is to pinpoint exactly what it means. We remind ourselves that when we are given a number in the form of a + bi, we are dealing with a complex number . A complex num...
MS
12661 Views

How do you decide what the sign of the enthalpy change should be?

You have to think about whether or not energy is being released by the system into the surroundings (exothermic), or whether the system is taking energy up from the surroundings (endothermic).You have to put...
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Answered by Ben W. • Chemistry tutor
2548 Views