Calculate potential at which there is no effective sodium flow through cell membrane. Assume sodium concentrations are 10mM inside and 145mM outside and temperature T=36C. Repeat the same calculation for potassium, with concentrations 140mM inside and 5mM outside. Boltzmann constant: kB= 1.38064852×10⁻²³ m² kg/Ks² ; Electron charge: e= 1.60217662×10⁻¹⁹C