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".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. Because that is transitional velocity. That's the one where the line becomes thickerBtw 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?Btw for the rotational velocity for the hydrogen specta, did y'all just talk about red-shift and blue shift
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 4mIs 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)
yes , i said mass and temperatureYes. 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?
Yeah but one side of the star is red shifted since it is spinning away and the other side of the star is blue shifted since it is spinning towards earthNo. Because that is transitional velocity. That's the one where the line becomes thicker
Okay maybe I'm retarded, but isn't red and blue shifting when it gets further away, not rotating?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?
I stand correctedYeah but one side of the star is red shifted since it is spinning away and the other side of the star is blue shifted since it is spinning towards earth
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 wrongIm 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
Sorry it was like 3.5001 or something which i think that 0.0001 is not important but if it is i guess i loose 2 marks for that questionIm 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
Ok I think I messed up because mine was like a few degrees off, not just 0.001Sorry it was like 3.5001 or something which i think that 0.0001 is not important but if it is i guess i loose 2 marks for that question
Was there a spark gap Hertz-like effect?No it still has an emf induced, just the current can’t flow so there isn’t any current
ur right, I did write about both tho, just hope they don't mark down cos of itI stand corrected
I cant quite remember the time but instead of doing a formula i just divided 1/3 by the tim(1.something) and got close to 3.5 rotations so i just roundedOk I think I messed up because mine was like a few degrees off, not just 0.001
Yea that probably sounds right I did a longer way with angular velocity and stuff that was probably not neededI cant quite remember the time but instead of doing a formula i just divided 1/3 by the tim(1.something) and got close to 3.5 rotations so i just rounded
u got paper?multiple choice solutions (from sigma science)
- D
- C
- C
- B
- D
- D
- C
- B
- A
- D
- A
- B
- C
- C
- A
- C
- B
- A
- B
- D
20 was D? wouldnt it be C?multiple choice solutions (from sigma science)
- D
- C
- C
- B
- D
- D
- C
- B
- A
- D
- A
- B
- C
- C
- A
- C
- B
- A
- B
- D