OCR A Level Physics Modelling physics H556/01 - 26 May 2022 [Exam Chat]

what did you write for it? that was OK for me it was the other one mostly because I didn't revise the Russel diagram thing

Triangle tent. Small tent. Ropes at smaller angle to ground so that greater component of tension acting against wind force. For the other one I think you said rate of fusion(L) proportional to T^4 and mass^3.6 proportional to L (3.6 was my gradient yours could have been different but should have been less than 4) so it gains less mass than it loses via fusion meaning hotter stars burn out faster

(edited 1 year ago)

Reply 41

pearly004

1

Original post by Mo_77377

For the first show that I got 0.625J. Did anyone else get the same or have I just made a silly mistake?

Silly mistake, you have to get the extension from the displacement on the graph, so you should get .5 X 500 X 0.06^2 to get 0.9

Reply 42

FFXXX

9

entire paper was ****ed tbh

Reply 43

Mo_77377

1

Original post by au_3992718

What question was this?

It was the first show that in q16. It was the show that on elastic potential energy

(edited 1 year ago)

Reply 44

au_3992718

4

Original post by Mo_77377

It was the first show that in q16. It was the show that on elastic potential energy

Pretty sure I got 0.9

Reply 45

Mo_77377

1

Original post by pearly004

Silly mistake, you have to get the extension from the displacement on the graph, so you should get .5 X 500 X 0.06^2 to get 0.9

Looks like I read the extension off the graph wrong! I got x=5cm. Thx for that

There was no diffraction grating question 😔.

Reply 47

mommymilkers

11

Original post by CharlemagneDaDog

Triangle tent. Small tent. Ropes at smaller angle to ground so that greater component of tension acting against wind force. For the other one I think you said rate of fusion(L) proportional to T^4 and mass proportional to L^3.6 (3.6 was my gradient yours could have been different but should have been less than 4) so it gains less mass than it loses via fusion meaning hotter stars burn out faster

I got 3.6 and the triangle tent part too, but I don't think I got the rest of it right but we'll see

Reply 48

studentstudent04

4

Was ocr accurate with the advanced info??

Reply 49

au_3992718

4

Original post by CharlemagneDaDog

Triangle tent. Small tent. Ropes at smaller angle to ground so that greater component of tension acting against wind force. For the other one I think you said rate of fusion(L) proportional to T^4 and mass proportional to L^3.6 (3.6 was my gradient yours could have been different but should have been less than 4) so it gains less mass than it loses via fusion meaning hotter stars burn out faster

I got something like 3.6. For the other marks I said that the bigger the star the greater the GPE converted to thermal, thus the hotter the star is and the faster the star undergoes fusion which causes larger stars to die faster, but I didn't really link it to the graph or my calculation so I don't really know if I got that many marks.

Reply 50

CathMath

1

Original post by studentstudent04

Was ocr accurate with the advanced info??

hell no there is no question about experiment in cosmology

Original post by studentstudent04

Was ocr accurate with the advanced info??

Different qualifications may have different levels of accuracy in the advanced info but I'd say yes OCR was pretty accurate (other than for the astrophysics and cosmology "practical skills" bit).

Reply 52

au_3992718

4

Original post by CathMath

hell no there is no question about experiment in cosmology

Yeah, I think they were just referring to being able to read graphs and do calculations from them. That confused me. I thought I needed to know how to describe how to find parallax angle or something.

Reply 53

mommymilkers

11

Original post by au_3992718

I got something like 3.6. For the other marks I said that the bigger the star the greater the GPE converted to thermal, thus the hotter the star is and the faster the star undergoes fusion which causes larger stars to die faster, but I didn't really link it to the graph or my calculation so I don't really know if I got that many marks.

I didn't really know how to link it to the diagram either

Reply 54

Ameister69

5

Original post by mommymilkers

I got 3.6 and the triangle tent part too, but I don't think I got the rest of it right but we'll see

I said curved tent aswell.

Original post by au_3992718

Yeah, I think they were just referring to being able to read graphs and do calculations from them. That confused me. I thought I needed to know how to describe how to find parallax angle or something.

It said "practical skills" so I thought that we would be assessed on well? An astrophysics practical like we were for materials 🤦. They lied in regards to that bit in my opinion cause that 6 marker sure as hell wasn't based off of something you'd do in a PAG but other than that I'd say that the advanced info was pretty accurate.