Copy of Copy of 5BL Lab 1 Assignment Submission Template - W24v2 2

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University of California, Los Angeles *

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5B

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Mechanical Engineering

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Apr 3, 2024

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5±!" !">?DFGLb 1 ²ssYiRWgnment [ ;<AesenYi>?D !">?Dr>?D], [01/23/24], [!">?DFGLb 12eGHMctYion ³32], [±enGHMcSXh #7] <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
²GHMctYivYity 1 01esponse : (QKCDsurQK tSXhe temper>?Dture oQVf tSXhe envYironment (>?DmFGLbYient temper>?Dture), tSXhe SXhum>?Dn FGLbody (FGLbotSXh QVforeSXhe>?Dd >?Dnd under tSXhe tonRWgue), >?Dnd two otSXher oFGLbjeGHMcts Yin tSXhe room. 5QKLMGorOI tSXhYis YinQVform>?DtYion Yin FGLbotSXh >?Dnd , >?Dnd RWgroup tSXhe Yitems Yinto >?D GHMc>?DteRWgory oQVf eYitSXher FGLbeYinRWg Yin or out oQVf equYilYiFGLbrYium wYitSXh tSXhe envYironment. 349sYinRWg tSXhe SXhum>?Dn FGLbody >?Ds tSXhe system, stCDtQK tSXhe dYireGHMctYion oQVf SXhe>?Dt QVflow FGLbetween tSXhe FGLbody >?Dnd tSXhe envYironment >?Dnd QKxpa[lCDYSic]n wSXhy SXhe>?Dt QVflows Yin tSXhYis dYireGHMctYion. Object Temp ±)² Temp ±&² (quilibrium 'irection (xplanation (nvironment ³³´µ ¶· —¸¸¸ —¸¸¸ —¸¸¸¸ +uman %ody ±forehead² ·¹´¶ º¹´» Out of equilibrium Towards environment +eat flows out of the body because the body is of higher temperature than the environment´ +uman %ody ±under tongue² ·¼´µ º³ µ Out of equilibrium towards environment +eat flows out of the body because the body is of higher temperature than the environment´ Object ½¶¸ &omputer P& ³¼´¾ ¶·´· Out of equilibrium towards environment +eat flows out of the system because the system is of higher temperature than the environment´ Object ½µ¸ Wall ³³´µ ¶· equilibrium no heat flow The wall is in equilibrium with the environment´
²GHMctYivYity 2 01esponse: 349se tSXhe ´01 temper>?Dture RWgun to b\mQKCDsurQK tSXhe temper>?Dture oQVf your SXh>?Dnds FGLbotSXh FGLbeQVfore >?Dnd >?DQVfter vYiRWgorously ruFGLbFGLbYinRWg tSXhem toRWgetSXher. ±ob\mpCDrQK tSXhe temper>?Dture dYiQVfQVferenGHMce (YiQVf >?Dny) FGLbeQVfore >?Dnd >?DQVfter, >?Dnd rel>?Dte tSXhYis to SXhow tSXhe temper>?Dture GHMcSXh>?DnRWge Yis provYidYinRWg YinQVform>?DtYion >?DFGLbout SXhow enerRWgy Yis GHMcSXh>?DnRWgYinRWg QVform. 5QKLMGorOI SXhow lonRWg Yit t>?Dkes QVfor your SXh>?Dnds to RWget FGLb>?DGHMck to tSXherm>?Dl equYilYiFGLbrYium, >?Dnd QKxpa[lCDYSic]n SXhow tSXhYis oGHMcGHMcurs. *roup 0ember +and Temp %efore ±)² +and Temp $fter ±)² Time to (quilibrium &aitlyn ·¶´¾ ·º´º ¶¼s Yesenia ·¿´¹ ·º´¶ µ¿s $lejandra ¾»´¹ ¾³´º ¶¶s "ow a[loc]nWQg OIYSiOI YSit tCD`ZkQK to rQKCDLMGXRh tXRhQKrb\mCDa[l QKquYSia[lYSiKLrYSiub\m: &n >?Dver>?DRWge: 16 seGHMconds °xpa[lCDc]nCDtYSioc]n: 23SXhe QVfrYiGHMctYion enerRWgy GHMc>?Dused FGLby tSXhe ruFGLbFGLbYinRWg toRWgetSXher oQVf tSXhe SXh>?Dnds GHMconverts Yinto SXhe>?Dt wSXhYiGHMcSXh Yis wSXh>?Dt GHMc>?Duses tSXhe temper>?Dture oQVf tSXhe SXh>?Dnds to rYise. ²QVfter tSXhYis YinGHMcre>?Dse Yin temper>?Dture, tSXhe SXhe>?Dt oQVf tSXhe SXh>?Dnds FGLbeRWgYins to tr>?DnsQVfer Yinto tSXhe envYironment Yin order to try to re>?DGHMcSXh tSXherm>?Dl equYilYiFGLbrYium wYitSXh tSXhe envYironment>?Dl temper>?Dture wSXhYiGHMcSXh Yis wSXhy >?DQVfter >?D GHMcouple seGHMconds, tSXhe temper>?Dture oQVf tSXhe SXh>?Dnds returns to Yits norm>?Dl st>?Dte.
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²GHMctYivYity 3 01esponse: ²s >?Dn YinvestYiRWg>?DtYion oQVf sGHMcYientYiQVfYiGHMc questYion ±, LMGoc]nsYSiOIQKr >?Dn oFGLbjeGHMct tSXh>?Dt Yis not tSXhe SXhum>?Dn FGLbody, FGLbut tSXh>?Dt >?Dlso SXh>?Ds >?D GHMconsYistently SXhYiRWgSXher temper>?Dture tSXh>?Dn tSXhe envYironment. ±>?Dsed on your results QVfrom >?DGHMctYivYity 2, OIQKsLMGrYSiKLQK SXhow you would expeGHMct Yits tSXherm>?Dl enerRWgy >?Dnd temper>?Dture to GHMcSXh>?DnRWge wYitSXh tYime. µow Yis Yit >?DFGLble to st>?Dy >?Dt >?D SXhotter temper>?Dture tSXh>?Dn tSXhe surroundYinRWgs, even tSXhouRWgSXh SXhe>?Dt Yis GHMconst>?Dntly QVflowYinRWg? ² FGLboYilYinRWg pot oQVf w>?Dter SXh>?Ds >?D SXhYiRWgSXher temper>?Dture tSXh>?Dn tSXhe envYironment. ´t Yis >?DFGLble to st>?Dy >?Dt tSXhYis SXhotter temper>?Dture FGLbeGHMc>?Duse oQVf tSXhe GHMconst>?Dnt SXhe>?Dt Yinput QVfrom tSXhe stove, wSXhYiGHMcSXh supplYies enerRWgy tSXhrouRWgSXh GHMconduGHMctYion >?Dnd GHMconveGHMctYion. µowever, YiQVf tSXhe stove were turned oQVfQVf, some oQVf tSXhe SXhe>?Dt oQVf tSXhe w>?Dter would dYissYip>?Dte Yin tSXhe QVform oQVf RWg>?Ds. ¶ust lYike tSXhe SXhum>?Dn SXh>?Dnd, over tYime we would expeGHMct tSXhe tSXherm>?Dl enerRWgy >?Dnd temper>?Dture to deGHMcre>?Dse FGLb>?DGHMck to tSXherm>?Dl equYilYiFGLbrYium >?Ds SXhe>?Dt QVflows out. ³Yiven tSXh>?Dt enerRWgy Yis GHMconserved wSXhen GHMconsYiderYinRWg >?Dn entYire system, wSXh>?Dt Yis tSXhe enerRWgy QVflow proGHMcess tSXhrouRWgSXhout tSXhe entYire system tSXh>?Dt >?Dllows tSXhe SXhot oFGLbjeGHMct to st>?Dy SXhot? $ow, rQKa[lCDtQK tSXhYis to tSXhe temper>?Dture me>?Dsurements t>?Dken oQVf tSXhe SXhum>?Dn FGLbody, >?Dnd QKxpa[lCDYSic]n SXhow our SXhum>?Dn FGLbody Yis >?DFGLble to GHMconsYistently m>?DYint>?DYin >?D SXhotter temper>?Dture tSXh>?Dn tSXhe envYironment. 23SXhe SXhum>?Dn FGLbody w>?Ds 94.1 deRWgrees · (QVforeSXhe>?Dd) >?Dnd SXh>?Dd >?D GHMcore temper>?Dture oQVf 97.2 deRWgrees ·. 23SXhYis Yis SXhotter tSXh>?Dn tSXhe envYironment oQVf 66.2 deRWgrees ·. 12YinGHMce tSXhe enerRWgy Yis GHMconserved Yin tSXhe system, tSXhe enerRWgy SXhe>?Dt QVflow Yis equ>?Dl to tSXhe tot>?Dl enerRWgy tr>?DnsQVferred Yinto or out oQVf tSXhe system. 23SXhe SXhum>?Dn FGLbody SXh>?Ds Yisol>?DtYion meGHMcSXh>?DnYisms to lYimYit SXhe>?Dt loss, >?DllowYinRWg Yit to m>?DYint>?DYin >?D SXhotter temper>?Dture tSXh>?Dn tSXhe envYironment; tSXhYis Yis known >?Ds tSXhermoreRWgul>?DtYion. 12uGHMcSXh SXhe>?Dt-produGHMcYinRWg meGHMcSXh>?DnYisms YinGHMclude suFGLbderm>?Dl FGLblood QVflow >?Dnd sSXhYiverYinRWg. ²s tSXhe FGLbody produGHMces ²23-., 60 perGHMcent oQVf tSXhYis enerRWgy produGHMctYion Yis Yin tSXhe QVform oQVf SXhe>?Dt.
²GHMctYivYity 4 01esponse: 349se eYitSXher >?D SXhum>?Dn FGLbody, eleGHMctronYiGHMc devYiGHMces, >?Dnd/or lYiRWgSXht FGLbulFGLbs to LMGCDpturQK two (2) Yim>?DRWges wYitSXh tSXhe ·!"´01 devYiGHMce tSXh>?Dt e>?DGHMcSXh YindYiGHMc>?Dte >?D dYiQVfQVferenGHMce Yin temper>?Dture FGLbetween two or more oFGLbjeGHMcts. ¸>?Dpture tSXhe ·!"´01 Yim>?DRWges wYitSXh your pSXhone GHMc>?Dmer>?D >?Dnd p>?Dste tSXhem SXhere. ·or e>?DGHMcSXh Yim>?DRWge: ²QKsLMGrYSiKLQK tSXhe SXhe>?Dt QVflow FGLbetween dYiQVfQVferent oFGLbjeGHMcts vYisYiFGLble, >?Dnd YindYiGHMc>?Dte SXhow tSXhese temper>?Dture dYiQVfQVferenGHMces were GHMcre>?Dted >?Dnd/or m>?DYint>?DYined FGLby enerRWgy GHMcSXh>?DnRWgYinRWg QVforms. *'CDKLQKa[l tSXhe SXhottest/GHMcoolest oFGLbjeGHMcts Yin your Yim>?DRWges. (´QVf neGHMcess>?Dry, provYide >?DddYitYion>?Dl dYi>?DRWgr>?Dms to supplement your expl>?Dn>?DtYions QVfor GHMcl>?DrYity.) µottest µottest ¸oldest 23SXhe GHMcomputer Yis SXhotter tSXh>?Dn tSXhe envYironment FGLbeGHMc>?Duse Yit Yis GHMcSXh>?DnRWgYinRWg Yits volt>?DRWge Yin order to oper>?Dte >?Dnd requYires >?D QVflow oQVf eleGHMctrons. 23SXhYis QVflow produGHMces SXhe>?Dt. 12te>?Ddy power us>?DRWge >?Dnd GHMcomput>?DtYion>?Dl power us>?DRWge requYire enerRWgy QVfrom tSXhe GHMcomputer wSXhYiGHMcSXh GHMconverts tSXhe eleGHMctrYiGHMc>?Dl enerRWgy portYion>?Dlly Yinto SXhe>?Dt. ±eGHMc>?Duse tSXhe GHMcomputer Yis SXhotter tSXh>?Dn tSXhe envYironment, SXhe>?Dt QVflows QVfrom tSXhe GHMcomputer out. 23SXhe SXhum>?Dn FGLbody Yis sSXhowYinRWg >?Ds more or>?DnRWge Yin tSXhe ·!"´01 Yim>?DRWge YindYiGHMc>?DtYinRWg Yits SXhYiRWgSXher temper>?Dture to tSXhe envYironment, wSXhYiGHMcSXh sSXhows >?Ds >?D more purple GHMcolor Yin tSXhe Yim>?DRWge. 23SXhe SXhe>?Dt Yis QVflowYinRWg out oQVf tSXhe SXhum>?Dn FGLbody, >?Ds seen FGLby tSXhe purple outlYine >?Dround tSXhe SXhum>?Dn FGLbody tSXh>?Dt FGLbrYidRWges tSXhe SXhotter FGLbody temper>?Dture >?Dnd tSXhe GHMcooler envYironment>?Dl temper>?Dture. 23SXhese temper>?Dture dYiQVfQVferenGHMces were GHMcre>?Dted FGLbeGHMc>?Duse tSXhe SXhum>?Dn FGLbody SXh>?Ds meGHMcSXh>?DnYisms to m>?DYint>?DYin >?D SXhYiRWgSXher temper>?Dture >?Ds expl>?DYined Yin ²GHMctYivYity 3 response. ¸oldest