13_InstSolManual_PDF_Part4 - 13-4 Chapter 13 Solve(a pgauge...

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13.13. Set Up: The density of seawater is Solve: (a) (b) Reflect: At the surface the gauge pressure is zero. At a depth of 250 m the force due to the water pressure is very large. 13.14. Set Up: The surface area of a sphere of radius r is Solve: 13.15. Set Up: Gauge pressure is The density of seawater is Solve: At a depth of 1.5 km, At a depth of 3.2 km, 13.16. Set Up: The density of water is The gauge pressure must equal the pressure difference due to a column of water tall. Solve: 13.17. Set Up: Solve: 13.18. Set Up: Gauge pressure is The density of fresh water is and the density of seawater is Solve: (a) (b) 13.19. Set Up: Solve: (a) so (b) so The height of a column of mercury at would be only 0.76 m. Reflect: If water is used, the height of the barometer for ordinary atmospheric pressures is impractical. Mercury is used instead because its density is larger. 13.20. Set Up: The added pressure is equal to Solve: (a) (b) This additional pressure causes additional outward force on the walls of the blood vessels in your brain. 13.21. Set Up:
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