Page 4 of 4 FirstFirst ... 234
Results 76 to 97 of 97
Like Tree33Likes

Thread: Physics Exam Thoughts

  1. #76
    New Member
    Join Date
    Aug 2018
    HSC
    2018
    Gender
    Male
    Posts
    9
    Rep Power
    1

    Re: Physics Exam Thoughts

    How accurate are the matrix answers?

  2. #77
    New Member
    Join Date
    Aug 2018
    HSC
    2018
    Gender
    Male
    Posts
    9
    Rep Power
    1

    Re: Physics Exam Thoughts

    Quote Originally Posted by Ace0804 View Post
    some people just fake it as well, cause anybody can edit it
    http://rawmarks.info/wiki/index.php?...ge&action=edit


    not everyone can edit. Im pretty sure that they are submitted and verified before published.

    The most likely answer for both marks being a 90 is that both lied within the 90th percentile of marks which isnt unreasonable to assume

  3. #78
    New Member
    Join Date
    Oct 2018
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    18
    Rep Power
    0

    Re: Physics Exam Thoughts

    Quote Originally Posted by FieryFX View Post
    How accurate are the matrix answers?
    Im not too sure myself but i guess they would be a reasonable indication of what you should have written although they would probably accept a variety of answers for certain questions.

  4. #79
    Junior Member 1729's Avatar
    Join Date
    Jan 2017
    HSC
    2018
    Gender
    Male
    Location
    Sydney
    Posts
    198
    Rep Power
    2

    Re: Physics Exam Thoughts

    for a DC motor does the force direction actually change every 180 deg? Wouldn't it only change if there WASNT a SRC? so shouldnt force direction be constant?

  5. #80
    New Member
    Join Date
    Jul 2018
    HSC
    N/A
    Gender
    Male
    Posts
    1
    Rep Power
    1

    Re: Physics Exam Thoughts

    The difference in the RAW mark cutoff for a band 6 is due to the option topics. One may be difficult than the other and thus they align differently

  6. #81
    New Member
    Join Date
    Aug 2016
    HSC
    2018
    Gender
    Male
    Posts
    8
    Rep Power
    2

    Re: Physics Exam Thoughts

    Quote Originally Posted by 1729 View Post
    for a DC motor does the force direction actually change every 180 deg? Wouldn't it only change if there WASNT a SRC? so shouldnt force direction be constant?
    It was a bad question because the diagram didn't show the section of the motor where the split ring commutator would've been located. However, because the question said that it was a DC motor, you can infer that a split ring commutator was there

  7. #82
    New Member
    Join Date
    Oct 2018
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    18
    Rep Power
    0

    Re: Physics Exam Thoughts

    Quote Originally Posted by DrEuler View Post
    The difference in the RAW mark cutoff for band 6 is due to the option topics. One may be difficult than the other and thus they align differently
    But look here the weighted mark which takes into account the option is the same as the raw mark.
    50A24FBF-6A3D-4283-81CD-6DC539235EA4.jpeg

  8. #83
    Junior Member 1729's Avatar
    Join Date
    Jan 2017
    HSC
    2018
    Gender
    Male
    Location
    Sydney
    Posts
    198
    Rep Power
    2

    Re: Physics Exam Thoughts

    so does the force direction change or not?

  9. #84
    Junior Member
    Join Date
    Feb 2017
    HSC
    2018
    Gender
    Male
    Posts
    122
    Rep Power
    2

    Re: Physics Exam Thoughts

    Wow true that is weird. My guess is that its probably that 78 was the cutoff and 83 was the same percentile as 78. However it seems a bit skeptical because there's no way a 5 mark difference would be the same percentile :/
    2018 HSC!!
    English | Maths Ext 1 | Maths Ext 2 | Physics | Software Design and Development | IPT

    ATAR aim: 96+ (Advanced Science(Physics Honours) and Comp Sci) @ UNSW

  10. #85
    New Member
    Join Date
    Aug 2018
    HSC
    2018
    Gender
    Male
    Posts
    9
    Rep Power
    1

    Re: Physics Exam Thoughts

    What does everyone think the band 6 cutoff is gonna be

  11. #86
    New Member
    Join Date
    Oct 2018
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    18
    Rep Power
    0

    Re: Physics Exam Thoughts

    Quote Originally Posted by 1729 View Post
    so does the force direction change or not?
    096DAC1F-77F0-43D7-9470-C97152974B72.jpeg
    Yes it does this graph may look familiar and represents the force on one side of the coil
    Regarding the b6 cut off:
    yeah i find it weird how 78 would go to 90 when ext 2 maths has similar aligning some years.
    Further im not sure how low itll be this year although the general consensus is the test was extremely easy i find it hard to believe that the cutoff will be 85+ this year like people were saying
    Last edited by 782341; 1 Nov 2018 at 6:24 PM.
    1729 likes this.

  12. #87
    Cadet
    Join Date
    Dec 2016
    HSC
    2018
    Gender
    Male
    Posts
    30
    Rep Power
    2

    Re: Physics Exam Thoughts

    cut off is probably gonna be 87 cause it was the easiest physics paper in the hsc

  13. #88
    New Member
    Join Date
    Mar 2017
    HSC
    2018
    Gender
    Male
    Posts
    16
    Rep Power
    2

    Re: Physics Exam Thoughts

    Isn't the pointer in Q18(or 19?) going down because the repulsive force by the coils is lessening gravitational force, so less apparent weight is measured?

  14. #89
    New Member
    Join Date
    Oct 2018
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    18
    Rep Power
    0

    Re: Physics Exam Thoughts

    Quote Originally Posted by Powereaper View Post
    Isn't the pointer in Q18(or 19?) going down because the repulsive force by the coils is lessening gravitational force, so less apparent weight is measured?
    You are right about it decreasing gravitational force but remember that when the gravitational force is lessened it means the pointer is not being pulled down as much so the pointer will actually move up

  15. #90
    Junior Member
    Join Date
    Feb 2017
    HSC
    2018
    Gender
    Male
    Posts
    122
    Rep Power
    2

    Re: Physics Exam Thoughts

    Quote Originally Posted by Ace0804 View Post
    cut off is probably gonna be 87 cause it was the easiest physics paper in the hsc
    I highly doubt it. Were only like a few people out of the thousands that take it. I'm predicting cutoff to be 83ish. Its never gone above that and even though we found it easy, statewide it was just like any other physics paper when 83 aligns to B6
    whatafeeling, 1729 and supR like this.
    2018 HSC!!
    English | Maths Ext 1 | Maths Ext 2 | Physics | Software Design and Development | IPT

    ATAR aim: 96+ (Advanced Science(Physics Honours) and Comp Sci) @ UNSW

  16. #91
    New Member
    Join Date
    Mar 2017
    HSC
    2018
    Gender
    Male
    Posts
    16
    Rep Power
    2

    Re: Physics Exam Thoughts

    Quote Originally Posted by 782341 View Post
    You are right about it decreasing gravitational force but remember that when the gravitational force is lessened it means the pointer is not being pulled down as much so the pointer will actually move up
    Why would it move up? Less force is measured, and it's a spring balance.
    Drdusk likes this.

  17. #92
    New Member
    Join Date
    Oct 2018
    HSC
    N/A
    Gender
    Undisclosed
    Posts
    18
    Rep Power
    0

    Re: Physics Exam Thoughts

    Quote Originally Posted by Powereaper View Post
    Why would it move up? Less force is measured, and it's a spring balance.
    The reading on the balance would decrease yes but theres no way that the pointer would move down? The spring is being pulled down LESS so it moves up.

  18. #93
    New Member
    Join Date
    Mar 2017
    HSC
    2018
    Gender
    Male
    Posts
    16
    Rep Power
    2

    Re: Physics Exam Thoughts

    Quote Originally Posted by 782341 View Post
    The reading on the balance would decrease yes but theres no way that the pointer would move down? The spring is being pulled down LESS so it moves up.
    Isn't the pointer showing the magnitude of the force exerted on the spring? So, since less force is exerted, it goes down to a lower value.

  19. #94
    Junior Member
    Join Date
    Feb 2017
    HSC
    2018
    Gender
    Male
    Posts
    122
    Rep Power
    2

    Re: Physics Exam Thoughts

    Quote Originally Posted by 782341 View Post
    The reading on the balance would decrease yes but theres no way that the pointer would move down? The spring is being pulled down LESS so it moves up.
    I think what he's saying is the pointer moves up with more force, so when there's less force it will naturally go back down.
    Powereaper likes this.
    2018 HSC!!
    English | Maths Ext 1 | Maths Ext 2 | Physics | Software Design and Development | IPT

    ATAR aim: 96+ (Advanced Science(Physics Honours) and Comp Sci) @ UNSW

  20. #95
    New Member
    Join Date
    Nov 2018
    HSC
    N/A
    Gender
    Female
    Posts
    3
    Rep Power
    0

    Re: Physics Exam Thoughts

    What would a raw mark of 87-90 align to?

  21. #96
    New Member
    Join Date
    Apr 2017
    HSC
    2018
    Gender
    Male
    Location
    Sydney, NSW
    Posts
    18
    Rep Power
    2

    Re: Physics Exam Thoughts

    In general, the top of the state gets 93/94 raw. There is no way that 10% of the phys cohort will get more than 86

  22. #97
    Junior Member eddydundee's Avatar
    Join Date
    Jun 2018
    HSC
    2017
    Gender
    Male
    Location
    Sydney, NSW
    Posts
    99
    Rep Power
    1

    Re: Physics Exam Thoughts

    this is bored of studies, everyone browsing this gets 90 ATAR LMAO

Page 4 of 4 FirstFirst ... 234

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •