Hi I think there’s is something wrong with one of the steps in part i. As 4*10^4.5 is not equal to what you wrote as the final answer..
perhaps im reading it wrong
Can you go into a bit more detail? I’m not sure which bit you’re referring to.
410^4.5 is not equal to what you wrote as the final asnwer for i 5010^4
It says potential difference is 5keV. Is that meant to be 5kV? Or am i misunderstanding?
Well spotted. That’s a misprint in the question that I didn’t notice. As you point out, you can’t have a potential difference measured in keV because that is a unit of energy, not voltage. It means 5kV I’m sure.
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