5BL Pre-Lab 3 Submission Template - F23

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University of California, Los Angeles *

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Mechanical Engineering

Date

Jan 9, 2024

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Uploaded by BarristerDinosaurMaster1059

5±!&' 12re-!&'aJKb 3 ²ssignment [56Sama], [10/21], [!&'aJKb °1] <URNK] SPVS]VSkjURNKLI ALILIVS]TQ x_nmpj jNKkjfg_]kjNKkj _] NKAJUR kj[VSLINK kjAsruNK mlURVSkj Akj A +±" SPVS[NK A]LI nmpfg[_ALI VSml ml_ x_nmpj #jALINKkjJ_fgNK AkjkjVSTQ]\NK]ml

!2 1. a) 45ReKLcount a prior experienKLce where your JKbody experienKLced a different amJKbient pressure. ³ow did your JKbody feel different when you were at this different pressure? JKb) =>Was the pressure higher or lower than amJKbient pressure? 67The pressure was lower than the amJKbient pressure. KLc) =>Where was the pressure “sensor” in your JKbody, and was your JKbody at a higher or lower height than the normal height for amJKbient pressure? ´ think my “pressure sensor” for my JKbody was my head, speKLcifiKLcally my ears. 67This is JKbeKLcause the first thing ´ felt was my ears popping and everything getting quieter as they tried to adjust. 67This is what made me then feel light headed. ´ was at a higher altitude than normal so my JKbody was at a higher height than the normal. This past weekend I visited my brother in Ojai± California where he goes to school² His school is in the mountains so I experienced a different ambient pressure² I felt a little light headed and my ears also popped as we drove up the mountain²

"3 2. a) =>What is the aJKbsolute pressure in a swimming pool at a depth of 1.0 m under the surfaKLce (56S´ units and psi units)? =>What is the gauge pressure there? 67The aJKbsolute pressure at a depth of 1.0m under the surfaKLce is 10098.0665 12a or 1.464 psi. 67The guage pressure is 9806.65 12a or 1.422 psi. JKb) ²t 10 m under the surfaKLce? 67The aJKbsolute pressure at a depth of 10m under the surfaKLce is 108900.665 12a or 15.801 psi. 67The gauge pressure is 98066.5 12a or 14.223 psi.

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#4 3. a) ³ow does an ´<=V drip get mediKLcation or JKblood into a patient? !&'ist at least one detail that helps explain how this works. ²n ´<=V drip is used to help get the mediKLcation into the patient JKby starting at a higher height than the patient's JKbody and then the pressure due to JKbeing at a higher height than the patient helps the i<=V fluid to get into the patient. JKb) ³ow does the height of the ´<=V drip affeKLct how well the ´<=V drip KLcontents will get into the human JKbloodstream? ²t higher heights, the ´<=V will dispense faster into the patient's JKbody. KLc) =>What happens if the ´<=V drip is too low relative to the height of the human arm? 67Too high? ´f the pressure is too low then there would not JKbe enough pressure to get hte mediKLcation through the ´<=V and into the JKblood JKbut if it is too high then there KLcould JKbe too muKLch mediKLcation JKbeing dispensed too fast whiKLch would mess with the saturation.

$5 4. 12rediKLction & µxpeKLctations with a health-related 56SKLcientifiKLc 34Question: ³ow do you think your JKblood pressure KLchanges depending on whether the sensor is aJKbove your heart or JKbelow your heart? µxplain your reasoning in 1-2 sentenKLces. =>When the sensor is JKbelow the heart then the JKblood pressure will JKbe higher JKbeKLcause there is less work that then has to happen for it to go downwards. =>When the sensor is aJKbove the heart the JKblood pressure will JKbe lower whiKLch leads to the fluid working against the KLchange in the height whiKLch would overall lead to a lower pressure.