Mathematics, 05.10.2019 09:00 dashavasilisk
The intensity, i, of light varies inversely as the square of the distance, d2 , from the light source. if i is 150 units when d is 6 meters, find a distance when the intensity is 24
Answers: 1
![\bf \textit{\underline{x} varies inversely with }\underline{z^5} ~\hspace{5.5em} \stackrel{\textit{constant of variation}}{x=\cfrac{\stackrel{\downarrow }{k}}{z^5}~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{\underline{I} varies inversely with }\underline{D^2}}{I = \cfrac{k}{D^2}} \qquad \qquad \textit{we also know that } \begin{cases} I=150\\ D=6 \end{cases}](/tpl/images/0288/8950/1441c.png)
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The intensity, i, of light varies inversely as the square of the distance, d2 , from the light sourc...
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