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Re: LMAD I NEED HELP WITH PHYSICS HOMEWORK

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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:46 AM
Q3 A) The refractive index in glass for red light is 1.514. Calculate the speed of red light in a glass block. Speed of light in a vacuum = 3x10(Power of 8) m/s.

In case you were wondering 3x10(power of 8) is 300,000,000


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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:50 AM
bump


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AbuBakrAlSaddiq is not online. AbuBakrAlSaddiq
Joined: 01 Jul 2015
Total Posts: 35
08 Feb 2016 11:51 AM
1.98x10e8 m/s


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Laakari is not online. Laakari
Joined: 07 Aug 2014
Total Posts: 17362
08 Feb 2016 11:52 AM
That's easy just multiply the constant with the speed of light.


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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:53 AM
hm


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Unforcefield is not online. Unforcefield
Joined: 13 Aug 2014
Total Posts: 7887
08 Feb 2016 11:53 AM
What exam board is that? UK?
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Sonorant is not online. Sonorant
Joined: 14 Apr 2010
Total Posts: 28826
08 Feb 2016 11:54 AM
c = n x v

with c being the speed of light in a vacuum, n being the refractive index, and v being the speed of light in the glass block

v = c / n

3x10^8 / 1.514

v = 198,150,594 m/s


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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:55 AM
where did u get 3x10^8 from?


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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:55 AM
lol nvm its speed of light in vacuum

and thanks son u made most sense to me


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Sonorant is not online. Sonorant
Joined: 14 Apr 2010
Total Posts: 28826
08 Feb 2016 11:56 AM
"Speed of light in a vacuum = 3x10(Power of 8)"


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AbuBakrAlSaddiq is not online. AbuBakrAlSaddiq
Joined: 01 Jul 2015
Total Posts: 35
08 Feb 2016 11:56 AM
"In case you were wondering 3x10(power of 8) is 300,000,000"


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Unforcefield is not online. Unforcefield
Joined: 13 Aug 2014
Total Posts: 7887
08 Feb 2016 11:57 AM
U purposefully missed what I said :/
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Dimocitrine is not online. Dimocitrine
Joined: 18 Oct 2012
Total Posts: 16683
08 Feb 2016 11:58 AM
198150594.452



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king157 is not online. king157
Joined: 06 Jan 2009
Total Posts: 19196
08 Feb 2016 11:58 AM
its uk


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Dimocitrine is not online. Dimocitrine
Joined: 18 Oct 2012
Total Posts: 16683
08 Feb 2016 11:58 AM
u taking O lvl this year?



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Danielogy is not online. Danielogy
Joined: 11 Sep 2007
Total Posts: 1550
08 Feb 2016 12:09 PM
what grade are u...
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