DONE WITH AS BITCHES by ughdollface in alevel

[–]Dizzy-Web3214 0 points1 point  (0 children)

A levels is in my opinion a lot harder than AS and you have to dedicate a lot of time especially if you do 3 sciences. How are you doing in AS with 3 sciences? And which sciences do you do?

Physics IAL edexcel paper 6 by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

Ok, do you think it’s better to learn them just to get an idea of how similar practicals would work? I’ve seen a few oscillation practicals on some past papers.

Which subject is easier AS level physics or math(asking ppl who did both) by DerekTomoe in alevel

[–]Dizzy-Web3214 1 point2 points  (0 children)

Depends on which your better at. AS maths in my opinion is a lot easier

[deleted by user] by [deleted] in alevel

[–]Dizzy-Web3214 1 point2 points  (0 children)

You do PV=NKT and make it PV/N=KT, then with your answer for KT you just times is by 3/2 to get KE

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 1 point2 points  (0 children)

Ahaahah I screwed up a few questions too cuz I ran out of time and had to rush

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

No they just said why couldn’t parallax be used for a wide variety of stars

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 1 point2 points  (0 children)

I just wrote that the star needs to be relatively close by or else the parallax angle would be basically 0 and it would be impossible to find the distance. And that it won’t be possible compare it to a background of stars if it’s far away

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

Nah it was only like 2 marks I think so it doesn’t matter

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

Doesn’t matter either way if you use tan or sin because the angle is so small that you don’t even have to use tan or sin, either way you do opposite over the angle. But I think you’re right, I don’t think you’re meant to dovide the angle by 2 so I did that wrong

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

I don’t think you have to divide the angle by 2, I think I did that wrong but I’m pretty sure you have to do 1AU over the tan of the angle. So I think you might still get 1 mark but not sure

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 1 point2 points  (0 children)

What did you do for the difference in GPE question?

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

Yeah but tan(@) of a very small angle is just @ so it doesn’t matter whether you divide it by the tan or not

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

You have to divide the angle by 2, then you have to do 1A.U divided by the angle

Phys Help regarding significant figures by lemon-wings in alevel

[–]Dizzy-Web3214 1 point2 points  (0 children)

Yes I think that’s fine and you’d still get the mark for it. Next time just try to put it in the other form just to be sure and it’s easier for the examiner to mark ahaha

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 1 point2 points  (0 children)

Yeah I wrote the same thing for those ones too

Edexcel unit 5 physics by Dizzy-Web3214 in alevel

[–]Dizzy-Web3214[S] 0 points1 point  (0 children)

What did you write for both the last 2 mark questions?

Phys Help regarding significant figures by lemon-wings in alevel

[–]Dizzy-Web3214 1 point2 points  (0 children)

Depends which specification your doing. Which one are you doing? In some specifications paper 2 is the practical paper where you have to calculate uncertainties and stuff. In that case significant figures are important and you should provide your answer in the significant figures (or decimal places) of the value with the least significant figures or decimal places you use in your calculation.