Water flows through a horizontal tube of diameter 2.8 cm that is joined to a second horizontal tube of diameter 1.2 cm. The pressure difference between the tubes is 7.5 kPa. Y Which tube has the higher speed of flow? Part C first second Previous Answers Correct Find the speed of flow in the first tube. Express your answer using two significant figures.

Water flows from the pipe shown in (Figure 1) with a speed of 4.0 m/s.   Figure 1 of 1   Part A What is the water pressure as it exits into the air? Express your answer using four significant figures.         P� =   kPakPa   SubmitRequest Answer Part B What is the height hℎ of the standing column of water?

Assume that the left side of your heart creates a pressure of 121 mm Hg by exerting a force directly on the blood over an effective area of 16.0 cm2. What force (in N) does it exert to accomplish this? N

Part A How deep underwater should you dive to quadruple the atmospheric pressure at the surface? Note: 1 m = 3.28 ft. Express your answer in feet to one significant figure. Π. ΑΣΦ h=135.65 B Submit Previous Answers Request Answer Provide Feedback ? X Incorrect; Try Again; 5 attempts remaining ft P Pears

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A 6.6 cmcm diameter horizontal pipe gradually narrows to 4.2 cmcm When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 34.0 kPakPa and 23.4 kPakPa, respectively. Part A What is the volume rate of flow? Express your answer to two significant figures and include the appropriate units.

Ethanol is flowing in a pipe and at all points completely fills the pipe. At point A in the pipe the gauge pressure is p and the cross-sectional area of the pipe is 0.0500 m² . The other end of the pipe (point B) is open to the air, has cross-sectional area 0.0120 m2, and is at a vertical height of 9.00 m above point A. Part A What must the gauge pressure p be at A if the volume flow rate out of the pipe at point B is 0.0800 m /s? Express your answer with the appropriate units. HA ? x" X•10" p = 1.87 • 10$ Pa This unit is not recognized. See the list of acceptable units. No credit lost. Try again. Submit Previous Answers Request Answer Provide Feedback MacBook Air