SOLUTION: Could you please help me with this problem? The intensity (I) of light from a light bulb varies inversely as the square of the distance (d) from the light bulb. Suppose (I) is

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Question 197350:
Could you please help me with this problem?
The intensity (I) of light from a light bulb varies inversely as the square of the distance (d) from the light bulb. Suppose (I) is 250 w/m^2 when the distance is 3m. How much further would it be to a point where the intensity is 160 w/m^2?
Thank you for all your help....
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
k = I * d^2 ___ k = 250 * 3^2 ___ k = 2250

2250 = 160 * d^2 ___ 225 / 16 = d^2 ___ 3.75 = d

so it would be .75 m further