The three common phases of aqse nd:hcl:r2x 5: ;umatter are

  Density is

  Substance A has a dens.lol: fgdjc:tbj un :d9g 9g)0ity 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 issp5/1b gua9qflg. u a7 not a unit of pressure?

  Consider three drinking glasses. All three haved r q. hl7 mp.v-ka)pf)9nvke2 the same area base, and all three are filled to the same depth with water. Glass A is cylindrical. Glass B is )kpe2 7.p mnva9l vq.d)kf -rhwider 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 outs ,aq qcl4g7x5)kf1pazide a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure 7 o /,gyvxaudpd.do50at the bottom od u d5/xd7yp.,gov a0of a pool?

  You are originally 1.0 m beneath the. j+q2dh og.i4m/aon3qdpb 8l surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on you?/dp2a3.m+.qbq 4gn8hjoo idl

State Pascal's principv (tb1n, t ex4.pmz:rsle.

State Archimedes' principle.nsx g7bgz45wpm c ;x,v/je(qa ,g3:hx

  $50 \; cm^{3}$ 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 deepedf*cm ,2yd-xen z,e-ju/bw.9q c( hfv r and deeper into water of constant density, what happens to the buoyant forchbem c/-,,d(-ufe92cfd *yqjw nv zx. e on it?

  Salt water has greater density than fresh water. A boat floats in both fresh )gsu .jdq nv3/water and in svdu)/n q3gjs.alt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. td y9kisp83 uhp:u1 u2A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displacedu t h9821uy psuip3dk: in the salt water is

  A steel ball sinks in *esd pdeo.d0s0 ,6n+ tkc/ndawater but floats in a pool of mercury. Where is the buoyant force on the ball greateedo6ndk* 0a0 .p sd+,detnsc /r?

  A 10-kg piece of aluminum sits at the bottom o+ xxin5qg3z/h2/ flj pf a lake, right next to a 10-kg piece of lead. Wh52iz qh3jlgf/x+/ xp nich has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If the ir35 nzv*g epzh*on is removed from the wood, what happens to the water level g* zepz*3v5nhin the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top of(s,, ;h3iehr4yxfzz v m-s,h r the first piece, and does not touch the water. If the toprf4 v,e rh(3z,,-xh ;zyihsms piece is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point B jjc1 (h)c nlh:is larger than at point A. Wnhjchjl :)(c 1here is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pi gvu0q5p1ev0 hr pur./pe. If the pipe widens to twice its originru5 vp0pe0g h1/vqr u.al radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pifr ;z, ry+v +cqt5orw9pe narrows to half its original radius, what is the flow speed in the narrower sectiq 5rtyr;wf+ro+vc ,z9on?

State Bernoulli's prineh ifgcc0oth+c) 5/ 8rciple.

  Which one of the following is associated wib-l9w qsl/a5gbe*:l y, tbcc*th the law of conservation of energy in :*y*5,qlel 9-blbws cgba/tcfluids?

  As the speed of a moving fluid increases, the pressure d iy;6w6k 5mc.o su 1x;ariio)in the fluid

  Water flows through a pipe. The diametlzivm2qyjn7/3 ngk/c v5; o-ner of the pipe at point B is larger than at point A. Where is the wateg5q3nj m;k 7ov2zi/yn lc-vn /r pressure greatest?

  When you blow some air above a paper strip, the paper rises. qmsoy4a0cp* ; -5hpxfqm j69 kThis is because

  A sky diver falls through the air atl,cjb g /6o w+:widf,b terminal velocity. The force of air resist,jg,w + l6fcwb/b d:ioance on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously rz)e u hv4st*ddn sf 5s-xw9.4from a tall tower. Which will reach the g*.etsw9 xvsrdsz 4hf u54d-n)round first?

  When a small spherical rock of z5+f df-mpe 2tn; e3wgradius r falls through water, it experiences a drag fo-zf2e3; g+dw5tnp fm erce $F=arv$, 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 effect on the flow of fluid through a narrow) uy;i.e fq+ty pipe? That is, if you made a ;yy ut+i.eqf )10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice thke .hqo)1ube,e diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difuk1e o) eqb,.hference across the lengths of the pipes. If the flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have tvy*x/ nxg(fp vi*bzjr *xw:.+he same diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the say(x*ri * v:z xp gvxjfb+./*nwme pressure difference across the lengths 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 grj,+ o;;b5 bzgsfwjin-w )0zfmeasy. This "greasy" taste seems to be associated with oil spreading out all over the-wz;n0)fsm;j5wji zbb,+go f 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 rim 7sl+mb9l5e.7xse zzr1, kl ases to a height h. If the diameter were half as great, how high would the.rs bm75e+7k ,e sz9x zl1lmal water rise?

  Certain insects, such as the water b, e,u6g-rqpd3dlf4-2n r okrrug, are sufficiently lightweight that they 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 dimens,-,n4kl2ofp -deq rrr g6d 3ruions. That is, bug B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are s0u 1 ch,w 8t8afz,dnz eo(wl/ o23ioxdufficiently lightweight that they can run on top of water without breaking the surface tension. This is possible because the water, due to surface tension, 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 a/hxndzfu3la 2co ,ewt0 (8wid1 z,oo8 s 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 ;98pdy a9 rwhjh+yz7lcm has a mass of 30.0 g. What i97 zlyh ;hjdp y8r9wa+s its density?

  A liquid has a specific gravity of 0.357. What is its dcwj0h8iftfsd7 1 kr+. ensity?

  A brick weighs 50.0 N, and ml94w8 ti *,/v h d 0btu(ywz7bag+unjmeasures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exerug4w h7ti z/0t9*bdjbva u8mwyl n,(+t on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each af0pdleno3 gifi-+ah;h)- -n snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a deh p4:txkbp q/ l60 nnvdo2;,fmpth of 120.0 m in th/ bqfxktnm2h,pv0:;np 6 lod4e ocean?

  A circular window of 30 9ym 9maao pry)01gba(cm diameter in a submarine can withstand a maximum force9m9(ba yma0gayo p)r1 of $5.20 \times 10^{5} \; N$. 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 pressu chy .m)0n-bpn*xu7 so- g4igxre is 300 kPa?

  What is the gauge pressure at a4elwjl+ o jjk f:9z89e location 15.0 m below the surface of sea? (The density of seawater +f jk98ze9:4ll wjoje is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a locatit1 a02-etdiw qon 15.0 m below the surface of sea? (The d i2at-qdw0e1 tensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on1 jcb1t 9kivr s7d/)yy the small piston of a hydraulic machine. The small piston has a7 1)/ytbvd jkc y19irsrea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the s;dk(v 9(we 3t9sni ohqmall piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small piston in order to lift eonhw(qts; i dk3( 9v9a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. What,opj :f +ds hd21,j9v knowm n/4buz;x force needs to be applied to a 5.0 cm diamet :/mj;1+sj xbf4znp n2do w,dkuo,9vher piston to accomplish this?

  The small piston of a hydraulic lift has ijae u ,9lr,eoyk ./s8a diameter of 8.0 cm, and its large piston has ilus9r,ea ko yj,/8.e 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 1s/m,;8o gkp)m+ nnywndu 3 s jbae9e/and 30 N in water. What is the buoyant force of the water?omua,m np; 3+e19 /esksnbd)j/8 gynw

  An object has a volumel k tu6(b.sht/+-jfds;9 ni qe of $4.0 \; m^{3}$ 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 q2sc;s2+ ozye-/e 9rv8kaqdfsubmerged in water. What is the tension in the string? vs;8e eo cr+dk-z2q/2ysq9af (The specific gravity of iron is 7.86.)

  If the density of gold isicfn2mku6g: - $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submaris9zja:wz.gr )ne (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 is in air and 6.86 N when it is i , q-9ewn*(:bx moq5tw 3mwscnmmersed in water. What is the specific gravi5twx mnmo3q:qww-n*,s ( 9ecbty of the object?

  A container of water is placed on a sca mnn y/ h-ze+)d;o3xh,d)vp hmle, and the scale reads 120 g. Now a 20-g piece of coppm he ;z3d),nh nv)-y xm+o/dhper (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 mass of 1.0yub f *xa74 hy)fr,o0p 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 justc2,dvmws*5 d jhbt wi*lr:v.( barely float in water. What hc , 25(lvivdbm*d.s :*wrwjtis its mass?

  A rectangular box of negligible mat)y / vpa;4, pv(iehlsss measures 5.0 m long, 1.0 m wide, and 0.50 m hip; p/,e)v(vlsyth 4aigh. How many kilograms of mass 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 volu3t t/t rn mja5/u8em-lme beneath the surface of the water. The weight of the displaced water is 2000 N. Whaj//5 m et nrlu-mta8t3t is the weight of the object?

  A solid object floats in water with three-fourtqzs4bz-ikz;b13dr2f;* e dlibu*i5 ohs of its volume beneath the surface. What is the object's den *z23i1f;zkzberqold * 5i4si;u bb-d sity?

  A 200-N object floats with three-fourths of its volume b3f-y0b1 gseo6 uty3 zfeneath the surface of theozb3f ft1y3esy g6-u 0 water. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floedf (4xbdv,*x rb -0xpw 100 cm thick. What is the minimum area of the floe that will just support the *dbxv, w04-(fxpdxrbbear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter a)b*l128 )rkex zqvja 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diam1u 9lunyed2 f3b7ds1oeter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line.93u 2e7u1d1 bny fsdlo What is the velocity in this restriction?

  Water flows at 12 m/s in pyiyh/+ j 7j/njd6hl ;9imd ymcvt :).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 su7(xry /4qfv mcpply a drinking fountain with 300 kPa, if the( 74/mxqcr yvf fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs 6w-e 7n6w) ohcynf n sy*q+zp8in the bottom of a water storage tank that holds water at +-*fo6nnew s6q7zp)w c hy8n ya depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-section bw-kxt ;u bt-zkhw*1-al area $10.0 \; cm^{2}$ 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 of 0.20 Pa-s. How long would it take to pous- t+ -5wv* hggsgg8myr 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 is kept 6 cm above the top of the neck, and neglect s+ sg gh- w8yg5g-t*vmany drag effects due to the upper part of the funnel.

  Suppose that the build-:,xf4t) almex4o 2jlhm+l t m w15br(wup of fatty tissue on the wall of an artery decreased the ra5t:atxhwlj+o wm) fx 1me4m,(l4 2blrdius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameter ofg2 uk* bj+7iyd tube B. If water rises 24 cm in tube A, g 7bj2ky uid*+how high will it rise in tube B?

  The surface tension of water is 0.07 grl3 :1l8b/wki by-fh3 N/m. How high will water rise in a capillary tube of diameter 1.2 mmf-ik3yb rw /ll:g1b h8?

  232

  To what height would water at 0 d6lg6 t3 t/iboiegree Celsius rise in a glass capillary tube with a 3ti/ g botil66diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises inoeku ,4ob *e1bv6tghkxx*q32 the tube to 4.0 cm above the level of the pan. The ugb hq t,kv6b*4x e1ex32*ooksurface tension in the liquid is 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 o fw*; .g1/wmtx aa8nxbf length 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface tensio m8b ;*wwga x.1xaft/nn of soapy water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frlx ,dov cpc oa2a90jf*o-2.mname 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 tension 0.026 N/m. How much work is required to move the adjustable lo-p *20dooam9xclv,n jc .a2f ong side so that the frame is 12 cm square?