Why do we experience atmospheric pressure? describe how localized areas of high and low pressure form, as well as what types of weather are associated with each. then describe how pressure differences are related to winds, and what other factors are involved in wind speed and direction both at the surface and aloft. answer all questions in detail.

At flow nozzle is to be installedin a 5-in type k copper tube carrying linseed oil at 77 f. a mercury manometer is to be used to measure the pressure difference across the nozzle when the expected range of the flow rate is from 700 galmin to 1000 gal/min. the manometer scale ranges from 0 to 8.0 in of mercury determine an appropriate diameter of the nozzle.