Mine look fairly similar with a couple different. Unlucky on question 19, i put C at first and quickly realised my mistake thank fuck haha. Pretty sure your number 7 is right, unless i can't use a calculator either.These are from memory so :S
1. C
2. B
3. B (I'm probably wrong here)
4. C
5. B
6. C
7. C (had to re calculate this one...couldnt remember it (i think i got it wrong LOL...can't use a calculator))
8. A
9. B
10. D
11. D
12. A
13. A
14. A
15. C
16. C
17. B
18. B
19. A (LOL SHIT IM A RETARD..it's D)
20. D
That number 7 is...but the one I put in the exam...I don't think it was that (can't remember...oh well)Mine look fairly similar with a couple different. Unlucky on question 19, i put C at first and quickly realised my mistake thank fuck haha. Pretty sure your number 7 is right, unless i can't use a calculator either.
If grav Ep is halved, then radius is doubled... So according to F = Gm1m2/d^2 , Grav force is quartered... Hence answer is D20 is A.
W is proportional to F (W=fs)
so half of init. grav. potential energy is half init. force.
Doesn't it contract in the direction of motion? (meaning answer is B)hey, i'm pretty sure the answer to Question 9 is A. It's a trick question because the spacecraft isn't moving away or towards the observer so Length Contraction doesn't occer.
observer across the street can see length contraction...Hey, i'm pretty sure the answer to Question 9 is A. It's a trick question because the spacecraft isn't moving away or towards the observer so Length Contraction doesn't occur.
.If grav Ep is halved, then radius is doubled... So according to F = Gm1m2/d^2 , Grav force is quartered... Hence answer is D
"rod a was placed at different distances from rod b". its distance between1. C
2. B
3. B
4. C
5. B
6. C
7. C
8. A
9. B
10. B ( isnt d incorrect? Because it changes dependant on the current? Ie the current is the thing u change? Correct me if im wrong)
11. D
12. D
13. A
14. A
15. C
16. B
17. B
18. B
19. D
20. D
It's not a trick question, it moves relative to the observer, who is across the street. It's BHey, i'm pretty sure the answer to Question 9 is A. It's a trick question because the spacecraft isn't moving away or towards the observer so Length Contraction doesn't occur.
Why is 14a. It only swings to the right once1.c
2.b
3.b
4.c
5.b
6.c
7.c
8.a
9.b
10.d
11.d
12.a
13.a
14.a
15.c
16.b
17.b
18.b
19.d
20.d
Its a repulsive force between the two rods because tey have a cureent in different directions. Hence the distance of the ro depends on the current that glows through them?"rod a was placed at different distances from rod b". its distance between