Give the ion notation for an atom with 6 protons and 2 electrons

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.