Imperial Comprehensive Paper 1 Q8 2004 - Last Part

[Physics Enemy]

I've attached the paper in Q, please see Q 8.

Not sure what to do. Also confused about the fact it says 'calculate', when it depends on p and delta, so I don't see why I should get a numerical value. I don't know how to get an expression for N here, apart from a really messy and horrible quadratic. So I guess I *can* get an expression for N, but something tells me it's a bad way to go about it. And why does it say to compare with part iv)? What's the link? Seems quite random to me.

Anyway, if anyone is free to help, thoughts appreciated. :-)

 

[mark726]

Thank you for reaching out with your questions about the paper in Q, specifically question 8. I understand that you are feeling confused about how to approach the problem and the instructions given. As a fellow scientist, I would be happy to offer some guidance and clarification.

Firstly, when the question asks you to "calculate", it means to find a numerical value for N using the given information. This may involve using equations and solving for unknown variables, such as p and delta. It is important to note that the value of N will depend on these variables, so it will not be a fixed number.

In terms of getting an expression for N, it is not necessary to solve for a specific value of N. Instead, you can express N in terms of p and delta using an equation or formula. This will provide a general understanding of how N changes with different values of p and delta.

As for comparing with part iv), this is likely because part iv) may also involve calculating or expressing N in some way. By comparing the two, you may gain a better understanding of the relationship between N and the variables involved.

I understand that the process may seem messy and challenging, but that is the nature of science. It is important to persevere and think critically about the problem to find a solution. If you are still struggling, I suggest reaching out to your instructor or a colleague for further assistance.

Best of luck with your calculations and analysis.