Which element has a complete valence electron shell? a selenium (Se)

b oxygen (O)

c fluorine (F)

d argon (Ar)

WILL GIVE FIRST AWNSER

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

Blank liquids and gases exert a buoyant force on objects placed in them

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)