The intensity of a light source at a distance is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. two light sources, one five times as strong as the other, are 16 m apart. at what point on the line segment joining the sources is the intensity the weakest?

x=

Step-by-step explanation:

Q= illumination

I = intensity

Q= I/d^2

Q_total =

=

now Q' = 0

⇒I

x=

[/tex]

x=

is the required point

$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.