The three common phases of matter arz) (73wucibi/ edj2 hae

  Density is

  Substance A has a densi,lro+n*bp qv,ty of $3.0 \; g/cm^{3}$ and substance B has a density of $4.0 \; g/cm^{3}$. In order to obtain equal masses of these two substances, the ratio of the volume of A to the volume of B will be equal to

  Pressure is

  Which of the following is not a uniejtsvgz5- 0 (dj 2imc/t of pressure?

  Consider three drinking glasses. All three havemx:edi +s* .i6pdg0 ty the same area base, and all three are filled to the same depth with water. Glass p6 emy0sdiigd t:x* +.A is cylindrical. Glass B is wider at the top than at the bottom, and so holds more water than A. Glass C is narrower at the top than at the bottom, and so holds less water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outside as a::1v3 is1sine-efad)x ak 7 tire called?

  When atmospheric pressure changes, what happens to thut4f zsiow,si 62rq4(e absolute pressure at the bottom of a pool zi2s(ufs6 4 ,qr4itow?

  You are originally 1.0 m beneath the surface of a pool. If yo f0ic6 mm0d(segk69ta*i :kaxu dive to 2.0 m beneath the surfacgc fxmtsk 6 mi*d(keia90a:60 e, what happens to the absolute pressure on you?

State Pascal's principle4 . f2pqrnqodqm,8lp/ .

State Archimedes' princ zil0 h(+coh1tdhx*9x ez r7y,iple.

  $50 \; cm^{3}$ of wood is floating on water, and $50 \; cm^{3}$ of iron is totally submerged. Which has the greater buoyant force on it?

  As a rock sinks deeper and deeper into water of constant dv+lpct6( 7ijs ensity, what happens to the buoyant il jpct6s v7+(force on it?

  Salt water has greater density than fresh water. A boatc7go +pl 8fid0 floats in both fresh water and in salt watf8dc p 0ogli+7er. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh wate iu29ypd k6m9k/o4aypr and salt wi2mk6op9 y p d/y9a4kuater. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of megj 05y** t )upwwqs*wesy(ji- rcury. Where is the buoyant force on the balp)t jy0w* iw5-q(ug**y wssjel greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right e:oxafbf 8 e6/kg1br.j 0/nwlnext to a 10-kg piece of lead. Which has the greatefr1/jgbn l eae/ko fw0b. :86xr buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. u bjk4hdbb/w 6ms6 t14If the iron is removed from the wood, what hapb4t jd /uhs4 mkb6bw16pens to the water level in the tub?

  A piece of wood is floating in a bat lhi6 rr,r2ni9htub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to the water ,9iri 6 hr2nrllevel in the tub?

  Water flows through a pip3 qws ml*r8ee81 4g71nhqtmy ce. The diameter of the pipe at point B is larger than at point A. Wheeh8r c*gm m8 swly etqnq31417re is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pnyrgh77zt84mkikj:sdm bv+ (j r 06 .uipe. If the pipe widens to twice its original radius, what is the flow speed in the wider sm( k+rzu s7 g:6jj0mr7kbt4i8hdnv . yection?

  An ideal fluid flows at 1 buzq. 10mz x2gdlr0j12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what lbz.1rj u1qm2g 0dz0 xis the flow speed in the narrower section?

State Bernoulli's pri+l 5ibhhxfz3 1nciple.

  Which one of the following is associated with the law of cohbre jo9 tb )y4mi+9ejg 2 0dt+sfy*x;nservation of energy in fluid+b+dreo mt*tijs2 y y99xbe0; )fgh4js?

  As the speed of a moving fluid increases, t ph h.vfelxio02y4 5wb26 jda4he pressure in the fluid

  Water flows through a pipe. The diameter of the p)g rnn.oj2 x,sipe at point B is larger than at point A. Where is the water pressno g2n, )sxjr.ure greatest?

  When you blow some air above a papev 6-uqy57qi9) vcka +b;e d)yhha1x zir strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force ofe*:uo gy2;r, ailwh)h air resistance on hio2a ruiye):h; gl *h,wm is

  Two Styrofoam balls, of radii R xuiwgp.(e: *evbv44zwh g0w+e +)xce and 2R, are released simultaneously from a tall tower.p.4xe(g* w0 zw+xwbh)uee ev:c4ivg+ Which will reach the ground first?

  When a small spherical rock of radius n qzd.xpl3:i0 r falls through water, it experiences a drag fopnzx i0d:3.q lrce $F=arv$, where $v$ is its velocity and $a$ is a constant proportional to the viscosity of water. From this, one can deduce that if a rock of diameter 2.0 mm falls with terminal velocity, $v$, then a rock of diameter 4.0 mm will fall with terminal velocity .

  Which has the greatest effeacqd.pb o(::+i y5ryz8vf n)ict on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest changedvi)i8b p 5:(fqa r.:+oyycnz in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diameter of foj;e+/5x .tjhk gob2pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the flow rate i+jokfj oxt2/g5 . b;hen pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipeuva i:iad-z1: 6df5)heb:nu j B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the le1 hf zd ud jea-:i:6a)ni:vub5ngths of the pipes. If the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to berht k31 r;695ln firhq associated with oil spreading o 3h rtk1qhli69fr n5r;ut all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to a height h- lbl oix9jf.n;;gq/rq/ b1sj. If to jqnl1s9lx/-/; ;jqbf i. rbghe diameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that thpckx 65h)uxo71a y4ofey can run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B is twice as big as bug A, in all dimensions. That is, bug B is twice as long, twice x6a) fh7x o41oypuk5cas wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweight tp xxu0 +,83dx+pcfs dmeac7t6ak2n+chat they can run on top of water without breaking the surface tension. This is possible because the water, due to surface te0+c u sd dacx 8nfx3m7p+e,2+ctx6paknsion, exerts an upward force on the bottom of the bug's feet. Suppose that the maximum possible upward force on the feet of water bug A is F. Now suppose that water bug B is twice as big as bug A in every dimension. That is, bug B is twice as long, twice as wide, etc. What is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 q d j-zj,ha9gr1 aozzti0*p36cm has a mass of 30.0 g. What a6gp9,-hrozz1i atd0*jqjz 3 is its density?

  A liquid has a specific gravity of / pos3fohxpcma . 6l52hhetk 6rt6j+.0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cmcmi 5zbg,izo/., xgc0 x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surfaceo,5/ g.0cgcmz zbxi, i?

  A person weighing 900 N is standing on snowshoes.aqon1 ef 08wn9 Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand atl 31efr .ay vd+xjyn5pl0e7p7 a depth of 120.0 m in the oca. djf7nr 0y+y17pellx5vp e 3ean?

  A circular window of 30 cm diameter in a subms(lsw7e j6b3farine can withstand a maximum force oe3jw l67ssbf(f $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure if the absolute pressure;dkorte4u4kgi)8n, m + 8hmqu is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the -guq ;0yb 9mm5puc;f; hixhz*surface of sea? (The dep;yczhfx;-;u i h9gqm*0 u5bm nsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sea ug7 (81ngjivu jd.(lc? (The de (vnl.7 idug1(jg8uj cnsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. ynd .jn i7ndlfm x//b.6:tr 7q The small pistodx/ n/7nfi7:bdty . rml.6njqn has area $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lifg-j/8o ol*a3lgg 0jr lt, the small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applilgjl0ggoa/lj *r8- 3 oed on the small piston in order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to-0okqw;,ei:m x /abvywp9-mcdxh:; w ,ct,ev be lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to x ,-m;wew9xevqty ,,vc ;-imc/::k0d p abwh oaccomplish this?

  The small piston of a ho19* v*w*t7s7owcbqgveij a, ydraulic lift has a diameter of 8.0 cm, and its large piston has*qob*7ivaj9 g 7 *csovwtwe1, a diameter of 40 cm. The lift raises a load of 15,000 N.
(a) Determine the force that must be applied to the small piston    $N$ (fill in numerical value only)
(b) Determine the pressure applied to the fluid in the lift    $\times 10^5 \; Pa$ (fill in numerical value only)

  A block of metal weighs 40 N in air and 30 N in water. What m87aq g; 9r*flkekrmn. -yz3qis the buoyant force of the wat9qma*f-r;zke3q.gmnr 7k 8 ly er?

  An object has a volume r(wq )l iyybgr3 3l-s3of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a string while submerged in 7l jb((7bhvbb water. What is the tension in the string? (The specific grbvb(hbbl77j( avity of iron is 7.86.)

  If the density of gold isinu uw wf/+ene0 m8.2r $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submari* gl4*yr4p6n j er5maf8,nj elne (density = $7.8 \times 10^3 \; kg/m^{3}$) of mass 20,000 kg. What is the tension in the lifting cable (1) when the submarine is submerged, and (2) when it is entirely out of the water?

  An object weighs 7.84 N when it c q-srr98ce3 9 knayfyl/8br6is in air and 6.86 N when it is immersed in water. What is the specificb r syn3k 8899qerraf/l c6y-c gravity of the object?

  A container of water is placed on a scale(mf8vxa60, u6)bv0l b dyvxd0ne0m ba, and the scale reads 120 g. Now a 20-g piece of 0 068 muy(da60e fmvxd0bn b)lvxbv,acopper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mas fxfd+36jvsp p)52d/ymq- lfjs of 1.0 kg and density of $2700 \; kg/m^{3}$ is suspended from a string and then completely immersed in a container of water. The density of water is $1000 \; kg/m^{3}$.
(a) Determine the volume of the piece of aluminum    $\times 10^{-4} \; m^3$ (fill in numerical value only)
(b) Determine the tension in the string after the metal is immersed in the container of water $N$ (fill in numerical value only)

  A cylindrical rod of length 12 cm and diameter 2.0 cm will just barely float in gu1vic6v;-i ag2wv f6ts.dwrf a+a;- t;.+f1 i6c6gvgu-w r-a ; v2daifavws water. What is its mass?

  A rectangular box of negligible ma fj1-tb5df +n 9egw- :gza0hlpss measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass+5ga h-:flt epdznjf0b 1 -wg9 can be loaded onto the box before it sinks in a lake?

  A $1.0 m^{3}$ object floats in water with 20% of it above the waterline. What does the object weigh out of the water?

  An object floats with half its volume beneath the surface of the water. T22/:j,mro; mhtsnv ssw)vp4ohe weis;vsohs,v2o mj/tmw2 ) n:p4rght of the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath,uc b1k.sy 1aicb97p ,(o jllw the surface. What is the object's du,a cc9l(1 ibj.sy wo17,klbp ensity?

  A 200-N object floats with thr ) w robnoxbzxlew2q 605:h16jee-fourths of its volume beneath the surface of the waterwqxhoz5:e6xl6) 2 jrb 1b0own. What is the buoyant force on the object?

  A polar bear of massp1vi0h7;.k/d p su ddr6j qan/ 200 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03qnu01 j 6a .dp;irp kv7dh/ds/? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. yx 0zqog5,4kbg)f0 aou *l/l3x6f xsc Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 24/v. pe (our :8+qr;tofmle jh.0 cm diameter restriction in the line. What ir eou mpe+8f;jorhq(:/t l4 .vs the velocity in this restriction?

  Water flows at 12 m/s v u/b;atf5j z0(/flznin a horizontal pipe with a pressure of $3.0 \times 10^4 \; N/m^2$. If the pipe widens to twice its original radius, what is the pressure in the wider section?

  How much pressure does it take for a pump to supply a drinking fountain with 30y 3xutp-4yd-g 0 kPa, if the fountain is 30.0 m above the pumpg4 - -3utdpyxy?

  A hole of radius 1.0 mm occurs in the bottom of a water stswy-th8pq:tnu ) tu:*+ ip5f corage tank that holds water at a depth of 15 m. At what rate t+q w-c5tfpipyu:nts8 ):u*h will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional are,sv66+moo6, tevbac n +d:cw ba $10.0 \; cm^{2}$ at a pressure of 0.250 atm. The flow rate is $1.00 \times 10^{-3} \; m^{3}/s$. At a valve, the effective cross-sectional area of the pipe is reduced to $5.00 \; cm^{2}$. What is the pressure at the valve?

  SAE No. 10 oil has a viscosity ofzf15oopcet)3g wlmq-337 eb*xv1hh )wnuxx - 0.20 Pa-s. How long would it take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume the surface of the oil ig7*x3tu nx5f)31)lw 3-e -h pq1exwmohzobvc s kept 6 cm above the top of the neck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an artery decreasx0er)ur(bt :oed the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a const)bxu:r (0etroant blood flow?

  Two narrow tubes are placed in a pan of (.*z srn0 bcy* qrylf/k+sy1fwater. Tube A has twice the diameter of tube B. If w lsns.f q+r/yy* (cy*bzk1f 0rater rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will wate**am5ubhz6dee.w 9y fr rise in a capillary tube of diameter 1.2 w.zh f*ebd5 m6e9uay* mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillam; gs9 an0duh: jvjd jq)z6u z:b;r08hry tube with a diamet jg8h;u0dj : :;zru6qas0hdm) nj 9zbver of
0.50 mm?

  A narrow tube is placed vertically in 2fbakg sra+343mx 7asa pan of water, and the water rises in the tube to 4.0 cm above the level of the pan. The surface tension in the liquid iss47m b2kxa3+a sgra3f lowered to one-half its original value by the addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of length dj pl+jpn6) b2n l4am00.120 m and width 0.600 m with a soap film form2l lp0ma bj6 jnd+)np4ed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangulj cc e /, k+phh kak6hsuqk0pz-v.+*rt* 42rguar frame has length 12 cm and width 5 cm, and is built in such a way that one of the longer sides can be moved without bursting the soap film contained in the frame. Soapy water has surface ten , kg jh *ekv2+h c*rpp.ucq0h+srk6- zut4k/asion 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?