SOLUTION: the intensity at which an object is illuminated varies inversely as the square of its distance from the light source at 1.5 feet from a light bulb the intensity of the light is 60
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Question 1183768: the intensity at which an object is illuminated varies inversely as the square of its distance from the light source at 1.5 feet from a light bulb the intensity of the light is 60 units what is the intensity at 1 feet
Found 2 solutions by Boreal, greenestamps:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
I=k/d^2 is the basic formula
60=k/1.5^2
k=135
so
I=135/1^2
=135 units at one foot.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The ratio of the new to the old distance is 1/1.5 = 2/3, so the intensity is changed by a factor of
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