find the attraction between the nucleus and the electron in a hydrogen atom knowing that the radius of the hydrogen atom is 0.5 x10^-8 cm charge of the electron e = 1.6 x 10^-19 C

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?