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Physics Predictions/Thoughts (4 Viewers)

Alamjot

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Btw for the rotational velocity for the hydrogen specta, did y'all just talk about red-shift and blue shift
 

Interdice

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I just think 2022 theory questions were free cos the questions were so easy to understand and required simple answers, but this one a lot of easy calculations I guess
No I thought the theory for this one wasn't too bad. But maybe that's because I enjoyed stars and they asked a lot about them. My friend also thought this one was "way easier".
 

Interdice

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Btw for the rotational velocity for the hydrogen specta, did y'all just talk about red-shift and blue shift
No. Because that is transitional velocity. That's the one where the line becomes thicker
 

Rattlehead15

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Btw for the rotational velocity for the hydrogen specta, did y'all just talk about red-shift and blue shift
Yes. And I just made the line they gave thicker. Also for when they asked about what qualities of the star make it luminous did anyone say mass and temperature?
 
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Is the launcher 4 m from the initial position though? I got like 183 deg rotated, not 180 deg rotated.
(So it had rotated up to the top plus a little)
Im pretty sure it was 4 because in the time for the ball to land the disc rotated 3.5 times since half a rotation is peak of the disc it is 2x radius which equals 4m
 

Interdice

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Yes. And I just made the line they gave thicker. Also for when they asked about what qualities of the star make it luminous did anyone say mass and temperature?
Okay maybe I'm retarded, but isn't red and blue shifting when it gets further away, not rotating?
 

Rattlehead15

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Im pretty sure it was 4 because in the time for the ball to land the disc rotated 3.5 times since half a rotation is peak of the disc it is 2x radius which equals 4m
I got time = 1.17 or 1.71 seconds or smth. And freq is 3 so 3*time*360deg and it did not equal an interval of 180 unless I did smth wrong
 

jackarana

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what do you think the cut off for band 6 will be , and is there a valid argument that when they said launched vertically upwards , it could have interpreted as being the net effect launching in the opposite direction hence vertical rectilinear
 

carrotsss

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multiple choice solutions (from sigma science)
  1. D
  2. C
  3. C
  4. B
  5. D
  6. D
  7. C
  8. B
  9. A
  10. D
  11. A
  12. B
  13. C
  14. C
  15. A
  16. C
  17. B
  18. A
  19. B
  20. D
 

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