1. Pressure is defined as force per unit area that a fluid exerts on its surroundings.[1] For example, pressure, P, is a function of force, F, and area, A. P = F/A. A container full of gas contains innumerable atoms and molecules that are constantly bouncing of its walls.
Length of the day in Sydney is 10:03 hours. Civil twilight begins at 06:32:04 and ends at 17:29:15 hours. Nautical twilight in Sydney begins at 06:01:11 and ends at 18:00:08 hours. Astronomical twilight in Sydney begins at 05:30:58 and ends at 18:30:20 hours.
Daily low temperatures increase by 5Â°F, from 53Â°F to 59Â°F, rarely falling below 46Â°F or exceeding 65Â°F. For reference, on August 1, the hottest day of the year, temperatures in Sydney typically range from 59Â°F to 75Â°F, while on January 31, the coldest day of the year, they range from 14Â°F to 28Â°F.