At two points 1 and 2 in a pipeline the velocities are Vand 2V, respectively. Both the points are at the same elevation. The fluid density is p. The flow can be assumed to be incompressible, inviscid, steady and irrotational. The difference in pressures P, and P, at points 1 and 2 is

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Time and time related variables in engineering

Time is the event progression starting from past to present and then, future statistically. The time-related variable is any particular value in relation to time to assess its changes on a specified (XY) plane.