The intensity I of light form a light bulb varies inversely as the square of the distance d from the light bulb. Suppose I is 490 w/m2 when the distance…
learn maths and leave the fear of it
learn maths and leave the fear of it
The intensity I of light form a light bulb varies inversely as the square of the distance d from the light bulb. Suppose I is 490 w/m2 when the distance…
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