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Original post by jack_ray13
I got 0.5 for initial velocity


same
Reply 41
How did u do cube one?
Reply 42
Original post by Username2727
Did people get around 30Kpa for the graph pressure question


I got 24
Reply 43
Original post by Username2727
Why was dynamo easier to turn when lamp disconnected


boyle law current acts against thing inducing it i think
Reply 44
Original post by Showmik_Hasan
Yeah 28-30 kPa is correct


marks would be allocated based on your line of best fit
Reply 45
The paper was not easy as hell it was mid
Reply 46
How do u do the cube one btw? What were the number I think the length was 12.6 but I can't remember the other numbers
Reply 47
Someone's phone went off in the exam and there's a chance everyone in the exam hall may fail that exam because of it. Physics has been my best subject and only one I might get a 9 in as well.
Reply 48
Original post by Eidoj
Someone's phone went off in the exam and there's a chance everyone in the exam hall may fail that exam because of it. Physics has been my best subject and only one I might get a 9 in as well.


That’s not how it works u cant all get disqualified for that
Reply 49
Original post by Smcgfx
How do u do the cube one btw? What were the number I think the length was 12.6 but I can't remember the other numbers


Cube cube sides were 0.12m so
Area of cube = 0.12x0.12

the pressure was 1500 pa

p = f/a
f = pa
1500 x 0.12 x 0.12

= 21.6N
(edited 10 months ago)
Reply 50
How many marks was it?
Original post by Smcgfx
Nah i got 25


I got 22
Reply 52
guys I think that I've wrote down all the questions, feel free to compare the answer/ fill the answer, we can make an unofficial mark scheme
1. transverse - perpendicular [1]
2. Investigation of black body [6]
3. ticking box + explain - 1/9/10 mins and why[2]
4. use the graph to predict - 22.5 or sth i forgot [1]
5. Calculate the horizontal resultant force - 0 [2]
6. Explain the state of motion - travel at constant speed [1]
7. Draw the velocity-time graph from distance- time graph [2]
8. 2 conclusion of the table [2]
9. Conclusion of old + young, noisy + quiet [4]
10. How to use less force? Increase distance from pivot[1]
11. Protractor - why? Resolution of 1 and 0.1 - [2]
12. Conclusion of the table: angle of incident = angle of reflection [1]
13. Error and explaination of table : random, the student didn't fully trace the light ray[2]
14. Name of reflection on smooth surface = [1]
15. Why break temp increase [2]
16. Why the protection helps? [3]
17. Definition of 'closed system' [1]
18. Ticking the box: equation pressure = f/a
19. Define bouncy car using newton's second law - when the 2 cars collides, they exerts equal and opposite force against each other [1]
20. Why did light ray not refract? Because rays is perpendicular/90 towards the boundary [1]
21. Air into glass in terms of font wave [3]
22. Dynamic [5]
23. Draw for 2 rotates - graph with 4 little hills, all positive [1]
24. Why dynamic rotates easier? [3]
25. Name the thing orbiting planet - satellite[1]
26. Why how motion changes in terms of gravitational field strength - shorter the radius of orbit, stronger the gravitational attraction, to prevent being 'sucked into earth' the telescope orbits in a faster speed. [3]
27. Explain the red shift - both have red shift, means wavelength stretched so both moving away from the Sun, but A has bigger red-shift so is further and move away at a faster speed. [3]
28. Car mass = 1600kg [4]
29. Space calculation frequency = 2.4*10^9[ ]
30. Current in secondary coil = 1.5 [5]
31. Displacement graph = 7*70 = 490 [2]
32. Initial Velocity - 0.5 [5]
33. B = 0.125tesla [3]
34. Distance travel by car = 15*2+15*3/2=52.5 m [3]
35. Atmospheric pressure estimation = 23.5 [1]
36. 1500* (0.12*0.12)=21.6 [4]
37. Force of bumper car = I forgot the exact question [5]
Original post by Day Toy
guys I think that I've wrote down all the questions, feel free to compare the answer/ fill the answer, we can make an unofficial mark scheme
1. transverse - perpendicular [1]
2. Investigation of black body [6]
3. ticking box + explain - 1/9/10 mins and why[2]
4. use the graph to predict - 22.5 or sth i forgot [1]
5. Calculate the horizontal resultant force - 0 [2]
6. Explain the state of motion - travel at constant speed [1]
7. Draw the velocity-time graph from distance- time graph [2]
8. 2 conclusion of the table [2]
9. Conclusion of old + young, noisy + quiet [4]
10. How to use less force? Increase distance from pivot[1]
11. Protractor - why? Resolution of 1 and 0.1 - [2]
12. Conclusion of the table: angle of incident = angle of reflection [1]
13. Error and explaination of table : random, the student didn't fully trace the light ray[2]
14. Name of reflection on smooth surface = [1]
15. Why break temp increase [2]
16. Why the protection helps? [3]
17. Definition of 'closed system' [1]
18. Ticking the box: equation pressure = f/a
19. Define bouncy car using newton's second law - when the 2 cars collides, they exerts equal and opposite force against each other [1]
20. Why did light ray not refract? Because rays is perpendicular/90 towards the boundary [1]
21. Air into glass in terms of font wave [3]
22. Dynamic [5]
23. Draw for 2 rotates - graph with 4 little hills, all positive [1]
24. Why dynamic rotates easier? [3]
25. Name the thing orbiting planet - satellite[1]
26. Why how motion changes in terms of gravitational field strength - shorter the radius of orbit, stronger the gravitational attraction, to prevent being 'sucked into earth' the telescope orbits in a faster speed. [3]
27. Explain the red shift - both have red shift, means wavelength stretched so both moving away from the Sun, but A has bigger red-shift so is further and move away at a faster speed. [3]
28. Car mass = 1600kg [4]
29. Space calculation frequency = 2.4*10^9[ ]
30. Current in secondary coil = 1.5 [5]
31. Displacement graph = 7*70 = 490 [2]
32. Initial Velocity - 0.5 [5]
33. B = 0.125tesla [3]
34. Distance travel by car = 15*2+15*3/2=52.5 m [3]
35. Atmospheric pressure estimation = 23.5 [1]
36. 1500* (0.12*0.12)=21.6 [4]
37. Force of bumper car = I forgot the exact question [5]

14. is specular reflection
Reply 54
Original post by Day Toy
guys I think that I've wrote down all the questions, feel free to compare the answer/ fill the answer, we can make an unofficial mark scheme
1. transverse - perpendicular [1]
2. Investigation of black body [6]
3. ticking box + explain - 1/9/10 mins and why[2]
4. use the graph to predict - 22.5 or sth i forgot [1]
5. Calculate the horizontal resultant force - 0 [2]
6. Explain the state of motion - travel at constant speed [1]
7. Draw the velocity-time graph from distance- time graph [2]
8. 2 conclusion of the table [2]
9. Conclusion of old + young, noisy + quiet [4]
10. How to use less force? Increase distance from pivot[1]
11. Protractor - why? Resolution of 1 and 0.1 - [2]
12. Conclusion of the table: angle of incident = angle of reflection [1]
13. Error and explaination of table : random, the student didn't fully trace the light ray[2]
14. Name of reflection on smooth surface = [1]
15. Why break temp increase [2]
16. Why the protection helps? [3]
17. Definition of 'closed system' [1]
18. Ticking the box: equation pressure = f/a
19. Define bouncy car using newton's second law - when the 2 cars collides, they exerts equal and opposite force against each other [1]
20. Why did light ray not refract? Because rays is perpendicular/90 towards the boundary [1]
21. Air into glass in terms of font wave [3]
22. Dynamic [5]
23. Draw for 2 rotates - graph with 4 little hills, all positive [1]
24. Why dynamic rotates easier? [3]
25. Name the thing orbiting planet - satellite[1]
26. Why how motion changes in terms of gravitational field strength - shorter the radius of orbit, stronger the gravitational attraction, to prevent being 'sucked into earth' the telescope orbits in a faster speed. [3]
27. Explain the red shift - both have red shift, means wavelength stretched so both moving away from the Sun, but A has bigger red-shift so is further and move away at a faster speed. [3]
28. Car mass = 1600kg [4]
29. Space calculation frequency = 2.4*10^9[ ]
30. Current in secondary coil = 1.5 [5]
31. Displacement graph = 7*70 = 490 [2]
32. Initial Velocity - 0.5 [5]
33. B = 0.125tesla [3]
34. Distance travel by car = 15*2+15*3/2=52.5 m [3]
35. Atmospheric pressure estimation = 23.5 [1]
36. 1500* (0.12*0.12)=21.6 [4]
37. Force of bumper car = I forgot the exact question [5]


I am pretty sure the first one was about longitudinal waves...no?
Original post by Username2727
Why was dynamo easier to turn when lamp disconnected

I said more current flowing through the coil, so a greater force applied to the coil, making it turn faster/ easier.
Original post by Watermerong
I am pretty sure the first one was about longitudinal waves...no?


no it said transverse
Reply 57
Original post by Day Toy
guys I think that I've wrote down all the questions, feel free to compare the answer/ fill the answer, we can make an unofficial mark scheme
1. transverse - perpendicular [1]
2. Investigation of black body [6]
3. ticking box + explain - 1/9/10 mins and why[2]
4. use the graph to predict - 22.5 or sth i forgot [1]
5. Calculate the horizontal resultant force - 0 [2]
6. Explain the state of motion - travel at constant speed [1]
7. Draw the velocity-time graph from distance- time graph [2]
8. 2 conclusion of the table [2]
9. Conclusion of old + young, noisy + quiet [4]
10. How to use less force? Increase distance from pivot[1]
11. Protractor - why? Resolution of 1 and 0.1 - [2]
12. Conclusion of the table: angle of incident = angle of reflection [1]
13. Error and explaination of table : random, the student didn't fully trace the light ray[2]
14. Name of reflection on smooth surface = [1]
15. Why break temp increase [2]
16. Why the protection helps? [3]
17. Definition of 'closed system' [1]
18. Ticking the box: equation pressure = f/a
19. Define bouncy car using newton's second law - when the 2 cars collides, they exerts equal and opposite force against each other [1]
20. Why did light ray not refract? Because rays is perpendicular/90 towards the boundary [1]
21. Air into glass in terms of font wave [3]
22. Dynamic [5]
23. Draw for 2 rotates - graph with 4 little hills, all positive [1]
24. Why dynamic rotates easier? [3]
25. Name the thing orbiting planet - satellite[1]
26. Why how motion changes in terms of gravitational field strength - shorter the radius of orbit, stronger the gravitational attraction, to prevent being 'sucked into earth' the telescope orbits in a faster speed. [3]
27. Explain the red shift - both have red shift, means wavelength stretched so both moving away from the Sun, but A has bigger red-shift so is further and move away at a faster speed. [3]
28. Car mass = 1600kg [4]
29. Space calculation frequency = 2.4*10^9[ ]
30. Current in secondary coil = 1.5 [5]
31. Displacement graph = 7*70 = 490 [2]
32. Initial Velocity - 0.5 [5]
33. B = 0.125tesla [3]
34. Distance travel by car = 15*2+15*3/2=52.5 m [3]
35. Atmospheric pressure estimation = 23.5 [1]
36. 1500* (0.12*0.12)=21.6 [4]
37. Force of bumper car = I forgot the exact question [5]

I think 6 should be constant velocity as the question specified it was in a straight line
Reply 58
1.5 amps for the 5 marker w transformer?
Reply 59
Original post by Watermerong
I am pretty sure the first one was about longitudinal waves...no?

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