The pressure outside a jet plane flying at high altitude falls considerably below standard atmospheric pressure.Therefore, The air inside the cabin must be pressurized to protect the passengers. What is the pressure in atmosphere in the cabin if the barometer reading is 688 mm Hg?

Looking for a ski-in/out chalet or Mont Tremblant Condo with Hot tubs and Pools? Try the the luxury Panache Mont Tremblant or Tremblant resort condos like the convenient Equinox Mont Tremblant or featuring the Bondurant Mont Tremblant or ski-in/out at the Altitude Mont Tremblant