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September 07, 2025, 06:23:39 am
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Author Topic: 2009 Physics Unit 3 Exam Suggested Solutions  (Read 42130 times)  Share 

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kaanonball

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #120 on: June 09, 2009, 10:19:03 pm »
damn 5 marks gone! =(

i hope the cut off for an A+ is less than 85/90
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TonyHem

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #121 on: June 09, 2009, 10:50:37 pm »
Quote from: redmosez on June 09, 2009, 08:07:22 pm
Quote from: TrueTears on June 09, 2009, 07:10:45 pm
Quote from: redmosez on June 09, 2009, 07:05:45 pm
I wonder how many marks i'd lose for q's 11 in motion, i had all the working out right to get 135 but for some stupid reason I subtracted 40 right at the end.





Did you write in minus 40 in your working? Then put the answer?

If you wrote minus 40 in your working then put in answer, I'm guessing 1/3. (Since answer mark is not consequential)

If you didn't write minus 40 in your working and just put answer as 135-40, then you'd get 2/3.

Nah I did all the working and got 135 then for some reason at the last minute wrote the answer as 90. I'm really hoping it's 2/3

On one of the things some of the members uploaded here, it said that if the student has done all the right working out, shown that their final answer is correct but has somehow made a transfer error from the working out to the answer box, full marks "should" be awarded.
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tomygun_123

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #122 on: June 10, 2009, 05:29:18 pm »
according to this, i got all of the qstns correct except for 1 multiple choice and the 2nd elevator qstn... :)
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(2009):
Physics _
Specialist Mathematics _
Mathematical Methods _
English _
Chemistry _

ENTER: 95...?? still a few months to go...

homghomg1

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #123 on: June 10, 2009, 07:30:42 pm »
Damn, Q11 from further electronics was my only mistake. Silly.
I'm 100% sure I wrote all that was required for all the explanation questions.
Hopefully I'm still in the run for a 50 with a 88/90
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justin

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #124 on: June 10, 2009, 07:49:00 pm »
Question 10, electronics is incorrect. It's not 1250 ohms. It should be 500.
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TRoi

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #125 on: June 10, 2009, 08:05:08 pm »
Quote from: justin on June 10, 2009, 07:49:00 pm
Question 10, electronics is incorrect. It's not 1250 ohms. It should be 500.
yeah true. And the answer is 1000ohms?
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Mao

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #126 on: June 10, 2009, 08:08:07 pm »
Check Errata on first post :)
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TrueTears

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #127 on: June 10, 2009, 08:08:36 pm »
Asnwer is 1000 not 500, if my memory serves me right.
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john316

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #128 on: June 11, 2009, 04:55:15 pm »
I should get 50.
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dcc

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #129 on: June 11, 2009, 05:22:38 pm »
How fast must a particle be moving such that its relativistic momentum is twice its newtonian momentum?

(and go.)
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dcc

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #130 on: June 11, 2009, 05:28:35 pm »
and muons only stay alive for 2.2 * 10^(-6) seconds, i disagree with that question!
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Mao

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #131 on: June 11, 2009, 06:00:45 pm »
Quote from: dcc on June 11, 2009, 05:22:38 pm
How fast must a particle be moving such that its relativistic momentum is twice its newtonian momentum?

(and go.)

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dcc

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #132 on: June 11, 2009, 06:07:44 pm »
Quote from: Mao on June 11, 2009, 06:00:45 pm
Quote from: dcc on June 11, 2009, 05:22:38 pm
How fast must a particle be moving such that its relativistic momentum is twice its newtonian momentum?

(and go.)



that was almost as unsatisfying as when I got that question in my exam yesterday.
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ayaz

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #133 on: June 12, 2009, 06:32:07 pm »
hey i was just wondering if you get (83/90) would that be an A+
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TrueTears

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Re: 2009 Physics Unit 3 Exam Suggested Solutions
« Reply #134 on: June 12, 2009, 06:39:43 pm »
Quote from: ayaz on June 12, 2009, 06:32:07 pm
hey i was just wondering if you get (83/90) would that be an A+

Stop double posting.
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