When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is proportional toI(t), where t represents the thickness of the medium (infeet). In clear seawater, the intensity 3 feet below thesurface is 25% of the initial intensity I0 of theincident beam.

What is the intensity of the beam 15 feet below the surface?

The intensity of the beam at 15feet below the surface is 0.098%Io

Step-by-step explanation:

The differential equation for the intensity of beam of light is given by: dI/dt= KI

dI/I = Kdt

Integrating both sides

Integral dI/I = integral Kdt

Ln/I/ = Kt + c1

I = e^(Kt + c1)

I= e^ it e^c1

I = Ce^it

At I(0) = Io

Io = C = I = Io e^ kt

At 3ft below surface

0.25 Io = Io e^3k

0.25 = e^3k

3k = Ln(0.25)

K = Ln(0.25)/3

K= 0.4621

I = Ioe^(-0.4621)

At 15 ft

I = Ioe^(-0.4621 ×15)

I= Io e^-0.69315

I = 0.00098Io

I= 0.098% Io

there has been genes found in the x chromosome of males that have been linked to [homo/hetero]sexuality. in addition to the reign of the x chromosome, a section of chromosome 8 has also been link to, "alot of ppl are so " these facts were proven true after a 2014 study of a gay male and his strait brother. according to newscientist.com,"chromosome 14 and is mainly active in the thyroid, but also the brain. called tshr, it makes a type of receptor protein that recognises and binds to a hormone that stimulates the thyroid. in this way, the gene plays an important role in controlling thyroid function. the fact that tshr seems to be involved in sexual orientation fits with evidence that thyroid function seems to be linked to sexuality."

in conclusion, "ppl are so gay" due to their genetics.