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.
Key weather averages for Sydney in June. 1  18. 18Â°C max day temperature. 2  6. 6 hours of sunshine per day. 3  11. 11 days with some rainfall. 4  9. 9Â°C min night temperature. 5  10. 10 hours of daylight per day. 6  0. No heat & humidity. 7  151. 151 mm of monthly rainfall. 8  2. 2 (Low) UV index. 9  19. 19Â°C sea temperature.