anonymous
  • anonymous
intensity of light from bulb is inversely proportional to the square f the distance s from the bulb. if i=90w/m^2 when the distance s=20m, find the itensity at a distance of 10cm/
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
formula is .. i=k(1/s) right or not?
anonymous
  • anonymous
and k=90x20 or k= 1800.. ?
anonymous
  • anonymous
and.. i sub 2 = 180 w/m^2?

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anonymous
  • anonymous
please correct. :)
anonymous
  • anonymous
okay walk me through this step by step I think there is something missing here I want to be sure.
anonymous
  • anonymous
I sub 2= 180? I though it was 1800?
anonymous
  • anonymous
@godorovg : i sub 2 = 1800 / 10 so.. 180? am i wrong?
anonymous
  • anonymous
no you are right
anonymous
  • anonymous
You didn't post i sub 2=1800/10 before that was why I thought it was wrong.
anonymous
  • anonymous
yeah? oh, ok! Thank you so much! ;D
anonymous
  • anonymous
no problem I try to teach not give answers I hope I have helped you
anonymous
  • anonymous
and you are not stupid in math.
anonymous
  • anonymous
just say because I know I use to feel that way as well, but I can tell you now I am pretty good in math because I learned how math works and I have faith my math skills. Math takes getting your hands dirty and working problems trust me this works..
anonymous
  • anonymous
it made me sure though :)) yeah, i agree~ haha thanks, again.
anonymous
  • anonymous
your welcome and if you need help again let me know :)
anonymous
  • anonymous
gave you a medal

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