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College Physics
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![Surface Tension and Capillarity
**
The pressure in the xylem near the base of a tall tree is 1.00 atm.
Part 1
What is the pressure in the xylem 54.0 m above, near the top of
the tree? Assume that the fluid in the xylem has the same density
as water. Give your answer in Pascals.](https://content.bartleby.com/qna-images/question/fdc204ec-7ff7-4cd0-a676-5eaec50257cd/4d3f1bfe-1a1f-46d8-9c07-6dfdb72f5c5d/3yrzfwc_thumbnail.png)
Transcribed Image Text:Surface Tension and Capillarity
**
The pressure in the xylem near the base of a tall tree is 1.00 atm.
Part 1
What is the pressure in the xylem 54.0 m above, near the top of
the tree? Assume that the fluid in the xylem has the same density
as water. Give your answer in Pascals.
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- You can chew through very tough objects with your incisors because they exert a large force on the small area equal to that of a pointed tooth. a. What pressure, in pascals, can you create by exerting a force of 520 N with your tooth on an area of 0.95 mm2?arrow_forward9. A fountain shoots water 8 m straight up. a. What is the pressure at the point where the water exits the pipe at ground level and when it reaches it maximum height of 8 m? b. How fast must the water be moving when it exits the pipe at ground level?arrow_forwardA 5.8 cm diameter horizontal pipe gradually narrows to 4.1 cm. When water flows through this pipe at a certain rate, the gauge pressure in these two sections is 31.0 kPa and 22.2 kPa, respectively. Part A What is the volume rate of flow?arrow_forward
- You can chew through very tough objects with your incisors because they exert a large force on the small area equal to that of a pointed tooth. a. What pressure, in pascals, can you create by exerting a force of 520 N with your tooth on an area of 0.95 mm2?arrow_forward6. A 100 cc block of Styrofoam (density 100 kg/m³) is held by a massless string, attaching the bottom of the block to the bottom of the vat, in a vat of water (density 1 gm/cc) as shown in the diagram. А. I Sketch and label the forces (with a brief description) on the free body diagram for the Styrofoam block? В. What is the tension in the string?arrow_forwardAssume 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? Narrow_forward
- 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 Pearsarrow_forwardQUESTION 8 In a lab, a foot-long test tube contains gasoline (density equal to 748.9 kg/m³) and oil (density equal to 950 kg/m³). The gasoline occupies the upper half of the tube while the oil occupies the lower half of the test tube. Compute for the pressure at the middle of the tube (at the interface between oil and gasoline). 1950.2 N/m² O 1118.5 N/m² 890.4 N/m² O 2537.3 N/m² O None of the choices givenarrow_forwardBarrow_forward
- 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.arrow_forwardThe same fluid (density unknown) fills three depressions on an alien planet. Depression #1 is a small pond. Depression #2 is a large lake. Depression #3 is a very large ocean. All of these depressions have the same depth. Gravity g is the same at all three locations. However the value of gravity is unknown. How do the gauge pressures at the bottoms of the three depressions compare? A. P3 > P2 > P1 B. They are the same C. P1 > P2 > P3 D. Can't tell without knowing the dimensions of the depressions.arrow_forward
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