1. Park the aircraft so the wing extends over a level surface. 2. Measure the distance from the wing root to the ground and from the wingtip to the ground. The wing root is the point
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1. Subtract the pressure leaving the pipe from the pressure entering the pipe. If, for instance, fluid enters the pipe at 600,000 Pascals and exits at 520,000 Pascals: 600,000  520,000
http://www.ehow.com/how_7845312_calculategallons...

1. Calculate angular frequency if you know the frequency. Multiply frequency by 2*pi = 6.28 to get angular frequency. If the frequency is 50 Hz, for example, 6.28*50 Hz = 314 Hz.
http://www.ehow.com/how_8719835_calculatephasean...
