The light intensity of a light bulb varies inversely as the square of the distance from the light bulb. The function I(d) = k/d^2 models this situation, where I is the light intensity, d is the distance from a light source, and k is a constant. If the light intensity 6 feet away from a light bulb is 20 lumens, what is the light intensity 10 feet away from the same light bulb?

asked by Nate

7 years ago

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2 answers

I=k/d^2
20=k/6^2
k=20*36

I=(20*36)/10^2

answered by bobpursley

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Bobo ka sa math

answered by Mark

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Question

The light intensity of a light bulb varies inversely as the square of the distance from the light bulb. The function I(d) = k/d^2 models this situation, where I is the light intensity, d is the distance from a light source, and k is a constant. If the light intensity 6 feet away from a light bulb is 20 lumens, what is the light intensity 10 feet away from the same light bulb?

2 answers

I=k/d^2
20=k/6^2
k=20*36

I=(20*36)/10^2

Bobo ka sa math

Ask a New Question or answer this question.

bobpursley · Answer

I=k/d^2 20=k/6^2 k=20*36 I=(20*36)/10^2

Mark · Answer

Bobo ka sa math