SOLUTION: Intensity of a Light Bulb The farther a person is
from a light bulb, the less intense its light is. The
equation approximates the intensity of light
from a 60-watt light bulb at
Algebra ->
Customizable Word Problem Solvers
-> Evaluation
-> SOLUTION: Intensity of a Light Bulb The farther a person is
from a light bulb, the less intense its light is. The
equation approximates the intensity of light
from a 60-watt light bulb at
Log On
Question 424590: Intensity of a Light Bulb The farther a person is
from a light bulb, the less intense its light is. The
equation approximates the intensity of light
from a 60-watt light bulb at a distance of d meters,
where I is measured in watts per square meter.
(Source: R. Weidner.)
(a) Find I for meters and interpret the result.
(b) The intensity of light from a 100-watt light bulb
is about Find an expression for the sum
of the intensities of light from a 100-watt bulb
and a 60-watt bulb.
