Respuesta :
Answer:[tex]\begin{gathered} a)\text{ I = }\frac{8910}{d^2} \\ b)\text{ I = }1.39mW/m^2 \end{gathered}[/tex]Explanations:
The amount of light of the bulb is represented by I
[tex]I=8910d^{-2}[/tex]a) Simplify the right side of the expression
[tex]I\text{ = }\frac{8910}{d^2}[/tex]b) Substitute 80 for d in the equation.
d = 80
[tex]\begin{gathered} I\text{ = }\frac{8910}{80^2} \\ I\text{ = }\frac{8910}{6400} \\ I\text{ = }1.39 \end{gathered}[/tex]The amount of light I of the 50-watt light bulb is 1.39 milliwatts per square centimeter
