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stupidinmath

  • 3 years ago

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/

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  1. stupidinmath
    • 3 years ago
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    formula is .. i=k(1/s) right or not?

  2. stupidinmath
    • 3 years ago
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    and k=90x20 or k= 1800.. ?

  3. stupidinmath
    • 3 years ago
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    and.. i sub 2 = 180 w/m^2?

  4. stupidinmath
    • 3 years ago
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    please correct. :)

  5. godorovg
    • 3 years ago
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    okay walk me through this step by step I think there is something missing here I want to be sure.

  6. godorovg
    • 3 years ago
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    I sub 2= 180? I though it was 1800?

  7. stupidinmath
    • 3 years ago
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    @godorovg : i sub 2 = 1800 / 10 so.. 180? am i wrong?

  8. godorovg
    • 3 years ago
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    no you are right

  9. godorovg
    • 3 years ago
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    You didn't post i sub 2=1800/10 before that was why I thought it was wrong.

  10. stupidinmath
    • 3 years ago
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    yeah? oh, ok! Thank you so much! ;D

  11. godorovg
    • 3 years ago
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    no problem I try to teach not give answers I hope I have helped you

  12. godorovg
    • 3 years ago
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    and you are not stupid in math.

  13. godorovg
    • 3 years ago
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    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..

  14. stupidinmath
    • 3 years ago
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    it made me sure though :)) yeah, i agree~ haha thanks, again.

  15. godorovg
    • 3 years ago
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    your welcome and if you need help again let me know :)

  16. godorovg
    • 3 years ago
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    gave you a medal

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