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admin
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Joined: 08 Dec 2003
Posts: 2176
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 Posted: Tue Jul 28, 2009 11:34 am Post subject: Question 10 |
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shawn48494299
Joined: 05 Sep 2010
Posts: 5
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| Posted: Tue Jun 28, 2011 9:29 pm Post subject: |
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So I am unsure of the strategy to use approximation to solve for this answer.
The question clearly asks for the minimum average power the section of Substance Q42 is capable of.
I see where if you approximate 0.3 seconds as 1/3 you arrive at answer choice C 24 watts. However say you do not approximate and just do the math you arrive at the fact that 26.66 Watts of power must be needed to perform 8J of work in .3 seconds.
Since the question as for the minimum amount of power needed, it appears that 24 Watts is just a little short and therefore makes answer choice D: 36 Watts the best option considering the choices. |
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gotemrecor5286
Joined: 31 Dec 2010
Posts: 8
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| Posted: Tue Aug 09, 2011 3:11 pm Post subject: |
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| The answer needs to be 36 watts, unless the question has 1/3 seconds, instead of 0.3 seconds. This is just a bad question overall. |
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dltkdgn896512
Joined: 26 Jun 2010
Posts: 36
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| Posted: Fri Sep 02, 2011 1:19 pm Post subject: |
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| I agree this is a fail question on GS part... over the course of 10 exams, I learned to just move along! haha |
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