The three common phases of matt4+qls r-am l*t87yp pber are

  Density is

  Substance A has a denafd 4-22ww. yz xuf7kgw) ss:fsity 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 unit of pressure. xntyum ;u-bkxt2)6i ?

  Consider three drinking glassl8 mn35yjm1ug es. All three have the same area base, and all three are filled to the same depth with water. Glass 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 t n5u81yjl mm3ghe 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 a tire ce+vz- vy ju z;9,sk1kralled?

  When atmospheric pressure changes, what happens to r jssf3j ,(dv1m bn8)tthe absolute pressure at the bottom of a pool? )j,ds s1jntvrm(f83b

  You are originally 1.0 m beneath the surface of a poo pjv2 a31*c,mky,diyqm- y (ivl. If you dive to 2.0 m be,vq(y im 1yc2i-, pjm*dyk3avneath the surface, what happens to the absolute pressure on you?

State Pascal's princi gzb4pa61n/sv d z*-knuz6h*bgqz +y0ple.

State Archimedes' principle.4a31*xz6 fgqy nc4vteh /7ic ul zkzdhn)76s ;

  $50 \; cm^{3}$ 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 deeo.4z3csb e)q, wrd7)beq p+kwper into water of constant density, what happens to the buoyant force owbr+3)esdqce wb p 7z,q k.o)4n it?

  Salt water has greater density than fresh water. A boat floats in both xvu a f0,32mgtfresh water and in salt water. Where is the buoyant force greater on the boat?am,3 f2gu0tvx

  Salt water is more dense than frh i0ltx;f,wn5 n;/nt besh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the /0,f5in;b;hnn tlwxtsalt water is

  A steel ball sinks in water but floats i5vmznwaoh)29b 3tdt: n a pool of mercury. Where is the buoyant h:odn b9t53a2 v)mzwt force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right nx,,om5uez8bl2 kqy g 64k; cgcext to a 10-kg pieceg4kc52g,l z uyqbc6;o8kxme , of lead. Which has the greater buoyant force on it?

  A piece of iron rests onw6 ergrc)09rj top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water6crr9 )g rjwe0 level in the tub?

  A piece of wood is floating in a bathtub. o;tjo-+ 8fptxA 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 level in the tu tfjo8+-potx; b?

  Water flows through a pipe. The diameter o z*v 0)r/b cnfwajkc bhex8-89o6-zezf the pipe at point B is larger than at point A. Where is the -ba * v/bw kz0fr -9zzcexec8 n)oj6h8speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe wekcn63*i3yty m 6e(nx idens to twice its original radius, what is the flow speed in tyn3k*e(n6 yie3 6cxtmhe wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipq/iqnky1*55hl ;im zxe. If the pipe narrows to half its original radius, what is the flow speed in the narrowhqq l5*kn myi;51zix/ er section?

State Bernoulli's princzq18+ wn5ocsm iple.

  Which one of the following is associated with the law of conservation ooo(,l bl a/q.if energy in a lqb(o il/o.,fluids?

  As the speed of a moving fluid increases, the pre yib w:(bn7 b+7ouab, rob)m7,zlg 2nqssure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is lar,n*t qn5zx.f d/m os-zger than afzo5/n-*, xnzsq t dm.t point A. Where is the water pressure greatest?

  When you blow some air above a paper4usy ;z.06+kmhnzaqa2ec n1 o strip, the paper rises. This is because

  A sky diver falls throught ;kp)i (zuon0hj;c2 t the air at terminal velocity. The force of air resistan0 n kc;p 2t;h)jo(iutzce on him is

  Two Styrofoam balls, of,+ bij- +1lu4gb;pce*kbablspx 4 7mi radii R and 2R, are released simultaneously from a tall towa,s71m4p b ii4klbe- j+ +ugc*lbb;pxer. Which will reach the ground first?

  When a small spherical rock of radius r falls through water, it experiences v(zczrnfa 1+ tw-f:x )nkr f*6a drag forw atxf1rf(n+6c :rvfznz )k*-ce $F=arv$, 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, h8iwj6 :vrasvhy;q) flow of fluid through a narrow pipe? That is, if:w)iyh ;a jvs68vh r,q you made a 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 th7/)fxpl4eac ae diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengcalx4e /)pa 7fths of the pipes. If the flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diametersb3hh7 1xixo 1, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes.ho hx 1xb13i7s If the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, yzgo)z.j,it n6)3ga/yq (dwiit often tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in litt.aogii/6(,y 3n )wgjz tzyqd)le 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. (s-mka;dq8w l If the diameter were half as great, h(m;s dlk8-q awow high would the water rise?

  Certain insects, such as the water bug, are suff 05eaq-a9 khq*ljz1dv*myrn -c++be m iciently 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 dimensions. That is, bug B is twice as long, twice as wide, etc. What is the weight of bugqvam j1-rk*n-9 hybdca e z+0*5ml+qe B?

  Certain insects, such as the water bug, are sufficien4gu-85 u7 v7bbf ;pb)xsxyl lntly lightweight that they can run on top of water without breaking the surfacub);fu x5ybg 47b x8p vlsln7-e 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 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 cw ku;qs-;.ixmrx t 71km has a mass of 30.0 g. What is its .;x1utrxq7k s i;-mwkdensity?

  A liquid has a specific gravity of 0.357. What is its dz)unl7/xp w7u p 1l6erensity?

  A brick weighs 50.0 N, andqs9f5k1: cyv 3grr*wc measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surfa:rw51ykg3f9c r*v cqsce?

  A person weighing 900 Nftoma: .r,*i*sl 1c ru is standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) muzjchw0 7 1mrf:st a submarine withstand at a depth of 120.0 m in the oceancrh 0zf m1jw:7?

  A circular window of 30 cm diameter in a submarine can withstand a maximum fo1qyno f)l(0m6feo l dg65-b qcrce fnq) e1 l-0c6y6q(b 5 fooldmgof $5.20 \times 10^{5} \; N$. 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 absoln)wba*pyr( )j(bib : kute pressure is 300 kPa?

  What is the gauge pressure at(fc:w jt(h3 3dkf vre2 a location 15.0 m below the surface of sea? (The density of sea vcffwhd(:re jt(32 3kwater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute p d+9 vnue nq(9g,x-emeressure at a location 15.0 m below the surface of sea? (The density of seawater ismx9q- u,e+ n(ve9dnge $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The sma8z: im 96kqywvj* 3o8qmjztw /ll pistozvmw: ji 6ykj98w /z 3qtm*o8qn 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 lift, the small pistjok9qimt jhr o2y uj4(3qgw6: /co; 4fon 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 a car weighing 20,000 N on the large p jj4o 9i2/tm4go6jy( c;fro 3huwkq q:iston?

  A 13,000 N vehicle is to be lifted bee*s qzcrx /p 24/7u ,0muiemvy a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter pistoz/c 2*mupeeuxv mi,s q7 er/40n to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 9r/bj; vigcx0 cm, and its large piston has a diameter of 40 cm. The lift rais;0rjvx /c bi9ges 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 by0xbxhj9lyvt q):9 2in air and 30 N in water. What is the buoyant force of the x)vhjx2 0by: lt9q9yb water?

  An object has a volume ofpehu ed1+ -a/h $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supx3 xl ttv9fq *bq:h3p1ported by a string while submerged in water. What is the tension in the string? (The specific gx9v1 q p*tx th:fq33blravity of iron is 7.86.)

  If the density of gold is 9kf ycv/:2frj$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarinemym+9qcuxj e n g7(+f6 (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 0qqjkww vr ,3;f666eng4m+nwpdb pp) is immersed in water. What is the specific +qep6; 6 wj rqv )0bgmwp n43d,wk6pnfgravity of the object?

  A container of water is placed on :v( ;f,vjcjxia scale, and the scale reads 120 g. Now a 20-g piece of copper (spvvj ,j;cf(:xi ecific 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 au5qyxxr 7,3dm0clp 7 p mass 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 ofj)l cd.7)fvdn length 12 cm and diameter 2.0 cm will just barely float in water. What is its mas )nd.7cl vj)fds?

  A rectangular box of negligible mass measures 5.0 m loniux(a:c.wo d00c4 f te* dc:rng, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinaun.c:4tr iwddo0: cx*(f 0ecks 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 thnq. e8g7w :kase surface of the water. The weight of the displa8kq aswe7 .n:gced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourthxp )1d:u3):qf7aerzv.gk,gg (qcejl s of its volume beneath the surface. What , dke7cu qj1(g)gq3. )ap v:g:ezlrx fis the object's density?

  A 200-N object floats with three-fourths of its volume benea :jl:7corpl h6th the surface of the water. What is the buoyant force ::6c rhll7p joon the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick.fg9ty ji+3;w uzo, xx6 What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice i+go;jzf x6w3u9,yi tx s 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Fia7;jjj jxbft m * qd:j*gp:7j0nd the flow rate.

  Liquid flows through a 4.0 cm diameter pcsi cbuc*vd-s k54 x.5ipe at 1.0 m/s. There is a 2.0 cm diameter restriction -sbc kd5vu4ic 5x.*sc in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontpzts3;sne ) o2al 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 fountaigae6)hrjb-nn. pj .,vn with 300 kPa, if the fountain bjea) . -jnn. vrhg6p,is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storagnai3qiye1zv 8.yr-2 ve tank that holds water at a depth of 15 2yaz qr 8v.e1-yiin3 vm. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sec u9bsb2fa3s5p ;vcp 1ac2h;y8p4st jrtional 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 ln2lf29/1* je(7hivywsxucg it take to pour 4.0 L of oil through a funnel with a nglnf 9(s2h72/1 xyjlcev* u iweck 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 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 i) lhajmcq2ps;wa;c: q/ m1/s decreased the radius by 10%. By how much would the pressure prs2; h1mmslj)qa/:wcpi q;/a c ovided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pxrpdt0d*msid* csa2-ix- n21 an of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high* ixa0dpxtci m-2ds1s2dn-*r will it rise in tube B?

  The surface tension of i;74 j sqa u1zn2dawx9b,tx1lwater is 0.073 N/m. How high will water rise in a capillary tube of dixz xu2 1istn d9;4alqbja1,7wameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass ch8o+2 cl76yhclq f6x,cjam ,r apillary tube with a diameqoh,a6x h7jcmrlf68ly, +cc2ter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in wtmg u 614vn1uthe tube to 4.0 cm above the level on141mv6 tg uuwf the pan. The surface 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 of length 0.120 m and wi p,(5fdowjaaspn g3i:-)ym 9vdth 0.600 m with a soap film formed within its confined area. If the surfac9viaajw5:m- 3 )pop,y sf(d gne 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 rectangular frame has length 12 cm and width 5 cm, and is-f;yj 73d) xijlr(*blth rsb7 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 req;3h-*d)(ji rt7 lbx 7lsfbyrjuired to move the adjustable long side so that the frame is 12 cm square?