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.
From the 1st Sun. of Oct. until the 1st Sun. of Nov., Sydney is 15 hrs. ahead of New York. The time difference between Sydney, NSW (Australia) and New York City, NY (USA) is 16 hours. Sydney time is 16 hours advance than NYC time. For example, if its 6:53 PM, Monday, December 31, 2007 in NYC, then its 10:53 AM, Tuesday, January 1, 2008 in Sydney. The time difference changes depending on the time of year. Australia experiences Daylight Savings Time (DST) just as the US does, but not on the same days.