Water flows through a horizontal cross-sectional pipe (density 1000 kg/m3

). The pipe’s cross-sectional area reduces from 100cm2

to 80cm2

. The pressure before being reduced is 5 kPa and the

velocity flow in section 1 is 4 m/s. What is the pressure at the end

where the pressure is being reduced?​

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.