The three common phases of a)f a1thnx - gugwtder(9r02,matter are

  Density is

  Substance A has a den(-cy5cjn v/s) jyd)v 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 pressurphunw , dnuqr.:r g1mzu7*sik)9.oitf5t n(.e?

  Consider three drinking glasses. All three have the same a owp,mpn/-h0yzemn y+a-p) 3erea 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 the bottom, and so holds less water than A. 0n-+zy)a/ppmp-eomy,e3w h n Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outsidex9/* l a+94hd.qpg 6feky: j qypdfl4q a tire called?

  When atmospheric pres l.mu9fb,0, w;t kr8s3 sgrheesure changes, what happens to the absolute pressure at the bottom of a pool3r f9mu8 hlw0tk,s;,e .egrs b?

  You are originally 1.0 m beneath)gx4el5c*- :ucmv0u hn2bd8u, fya yl the surface of a pool. If you dive to 2.0 m be)bnlca 4cy2fdy80 vlu,g eu:*5u-hx mneath the surface, what happens to the absolute pressure on you?

State Pascal's principleuar vv(86cn 3qx)9y wz.

State Archimedes' prnf5xa.j8 vu. ,i9j)ue f5 ay,rlvaev 4inciple.

  $50 \; cm^{3}$ 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 density, what happsrl)/7j; uv eyens to the buoyant force on itj r/uv) s;7eyl?

  Salt water has greater density than fresh water. Azo,(ishty:1 r boat floats in both fresh water ands1r: ythz,( io in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A shx *xv +8in*j4 iwav1wy0qzu5a ip floats in both fresh water and salt water. Compared to the fresh water, the volume of water di5qia w84*zi*1xw j +0avvxy nusplaced in the salt water is

  A steel ball sinks in water but fb a*erw2d d4j,)3c ioiloats in a pool of mercury. Where is the buoyant forcei4j, 3di bd2 owrec)a* on the ball greater?

  A 10-kg piece of aluminum sits rv.e bida mpt .-y u.y;(wt9x6wtgu89 at the bottom of a lake, right next to a 10-kg piece of lead. Which has the g9.wuuy.9t6 grvdti.mw xpb;8 -e( t ayreater buoyant force on it?

  A piece of iron rests on top of a piece of wood flo tsp9lgr )1p)fating in a bathtub. If the iron1tpsr)pf9 )lg is removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second pos 7db;viy2;miece of wood sits on top of the first piece, and doesv7 mb d;y2soi; not touch the water. If the top 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 ) ssgtkyxx20n)+ae 4v at point B is larger than at point A ks )ne 2a4)g+txx0vys. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If ai5ns*og 4i5a the pipe widens to twice its original radius, what is the flow speed in the wider section?a o*4sn55iig a

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows toizay/106bxk,b fj lwu;c3d. b half1uj,czybkwx;0 a/ id63. bblf its original radius, what is the flow speed in the narrower section?

State Bernoulli's principlex m 5k0)gf,nq,r/q jcoyeq d7*.

  Which one of the following is associated with the lawwd o,i /0ztc3g of conservation of energy in fluidsic,3/ d tzwog0?

  As the speed of a moving fluid increases, t2 .cifp2 oi 0kxq+e7rohe pressure in the fluid

  Water flows through ayt3).:eo8igic km 4 gv pipe. The diameter of the pipe at point B is larger than at point A. Where is the water pressu)ev4y83.i k cmog g:tire greatest?

  When you blow some a4d)ux6) wfuezm2c6h3 zq epl9ir above a paper strip, the paper rises. This is because

  A sky diver falls througho,y5- t,fudujr6q tx, the air at terminal velocity. The force of air resistance on him uurqy,t, j,f5 x-6 odtis

  Two Styrofoam balls, /56;kbzx-y . gf ylsfeof radii R and 2R, are released simultaneously from a tall tower. Which will re/5xsfl-6 g;fbzkyy .each the ground first?

  When a small spherical rock of radius r falls through wt.k1;yx v5hwf ater, it experiences a dragy 1 tx;5wkhfv. force $F=arv$, 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 greates 5co o5wd9rw0k n.jtg9t effect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which woul5g9n j 9r0wcotdokw5.d cause the greatest change in the flow rate?

  Two horizontal pipes are the same le,z3fm5 z f3doti:1 yxeej- rbms-c2o6ngth, but pipe B has twice the diameter of pipe A. Water unof6fe yjsze - -2rm3 i1tb:o5,3cmzdxdergoes viscous flow in both pipes, subject to the same pressure difference 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 haveo26;6s bkcymppfpprj6 1k 3n; the same diameter, 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 6n;ps16k y2pm rpb6jckf3po ;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 tasteguuj-n * -p9 :w0aq1nid5q gbqs greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To uj5w din*p:qu g9 qu1a0 bng-q-s "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the w+y.6kerkfmwa irp l7 8(4s8 ufater rises to a height h. If t7.yfw6rkf8(erm 4p auks l8+ ihe diameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that they edf40dgbe uy(9s:z 4ht14drscan run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B is twice40: sy dbrt us4 19dfzghe4e(d 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 bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that they crwp 0 p j3e(2(rusyd; z6zlzv puj8y2)an run on top of water without breaking the surface tension. This is possible because the water, due to surface tension, exerts a rsj)pzzwpuy 3(pryl08ze 2v 2(j;ud6n 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 cm.zg4 iz,igqj.e 2y7 yuukvax1d.;wz ; has a mass of 30.0 g. What is its z;.,kju y4iavw. y7x1 egd;z2q zi.gudensity?

  A liquid has a specific gravity of 0.357. What 9m6tr):aenoxe5 yxib h;um8 n7b s)p;is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4c, gscfjl3cws)81a8pinmn - 4 .00 cm. What is the maximum pressurn j cp)m1wc cfsa 8i,ng3-s48le it can exert on a horizontal surface?

  A person weighing 900 N is standing omi/m4iw g.s(1mce cz;,a/ wkjn snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.zq74doe x7) wmsv *r6p0 m in the rd7xosz7m)*e pqw v64ocean?

  A circular window of 30 cm diameter in a submarine can v eep ,5q-rc0ywithstand a maximum force oyp0 -eceq5,vrf $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pr b67n+r-)l4 pihajlttessure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea ihyx3z31d,q r? (The density of seawateq3 y,3dirz 1hxr is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the sur*(0 (:dvw+i+3hddhbwmr yl fmc )m9qhface of sea? (The density of seawa9ciy *qwdr0 h3dv:+l) h f db(mh+mw(mter is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The smav6i7 (e uzna.all piston has ai.aavze7 6(unrea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the small piston has a radius of 5.0 cm and the largp 2hpzs ./hje-xlu3pod7s9 n;e 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/lpd37s-9pzu; n e .2xhjphos on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. What 4hloan;4 ; jb6mc.quiforce needs to be applied to a 5.0 cm diameter piston to accomplish this?oam;j 4bh n6l4c.ui; q

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and in1ur(1 etx d*mts large piston has a diameter of 40 cm. 1*(m1ne u xdrtThe 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 wa j;tdgw fzac im/1::nr imf296ter. What is the buoyant force of the watrf; i: 2cw9ig 6:da/nmjm1fzter?

  An object has a volumeq+g j .m9gqr+x 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 supportedlm85-si1vaaf gfpyk7 a0 ;eg * by a string while submerged in water. What is the tension in the string? (The specific gravity of iron 7 gfv 5ya0skap;8el-gm i*a f1is 7.86.)

  If the density of gold usztb3h ,6.ff9tm0 q:b2 psl jis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (densi 3pmmruh30bproa)e(7(y5.i yzu s 8mrty = $7.8 \times 10^3 \; kg/m^{3}$) 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 3agghax.w;y : is in air and 6.86 N when it is immersed in water. What is the specific gravity w3;g.yaxag h :of the object?

  A container of water iywr)5v-ef o *+sf 6tgo+kl2l oaia9m7s placed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravim l*f2fe )r-+ovyg5t+ i6oa a7loks9wty = 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 1.0 kg and dv g**moe0- lvjensity 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 17x8 mgq0g iqckje hn8.h*pxf* 5wv5v)2 cm and diameter 2.0 cm will just barely float in water. What is its g. 8kp7c* hv*5v jeqnm5wgxh x8 fi0q)mass?

  A rectangular box of negligibl( ;h1(5vf7laujg sbbcf6 b+ vle mass measures 5.0 m long, 1.0 m wide, and 0.50 m hiajgbs+;fvl (l 7 f5 c1hb6u(bvgh. 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 volume beneath the sur*mjcexm.uis c.k 76hk:rlk-6face of the water. The weight of the displaced we.6c6 kmh c*ix7j. rkskm-l:u ater is 2000 N. What is the weight of the object?

  A solid object floats 3 h8iy 4udu:gsin water with three-fourths of its volume beneath the surface. What is the object's densityi g4u :8d3ushy?

  A 200-N object floats with three-fourths of its volum3 ckglrbza u1j0z:6/ue beneath the surface of the water. What is the buoyant force on th ukc :zg0ajur13 6/zlbe object?

  A polar bear of mass 200 kg stands on an ice floe 8xt/y l g2wsq5100 cm thick. What is the minimum area of the floe that will just support/w 8 stxgyq52l the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the6wfj c jj*0l8b flow rate.

  Liquid flows through a 4r fwy mdm;c+-ybsf yvd**3(5 h.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restrictyy3smv(w y ;+m*dhrc ffd*-b5ion in the line. What is the velocity in this restriction?

  Water flows at 12 m/s jv e s( gmxt4kl(o:5+rin 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 apf4ht x:p u7,p pump to supply a drinking fountain with 300 kPa, if the founta,7p ux pph:4tfin is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tab aj x76gnl,o69 smdbl1r)w7y(ei y d)nk that holds willxndyrgsjm1oae7(97w)6 )y ,d bb 6 ater at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional areay7:5e tgxk.kb $10.0 \; cm^{2}$ 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 pourgv0 ez3ikf -pl/ w/w0z 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 l/w/- 0z k3pi gef0zvwkept 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 yt0n(:9ed yxu 5g /wxfan artery decreased the radius by 10%. By how much would the pressure provided by the hy tex (5duw9g f/x:n0yeart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in apvr0 t 5slt,;z pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube0zrpl 5v,ts;t A, how high will it rise in tube B?

  The surface tension of wate wh ov5 agk ruq.t42/*w.3ypt d.ktkv7r is 0.073 N/m. How high will water rise in a capillary tube of gkq p7y2 /o3w * 4.dhtr tw.u5a.ktvvkdiameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius ri. 8kspvzjcr9pd87p*f fi - h+m6p-nrgse in a glass capillary tube with a diam9rj8+kv.fhp6-r -m7gpp8dpn*zf i s c eter of
0.50 mm?

  A narrow tube is placed vertically in a pan t9b* mn9hhymv*rd k6.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 is lo*t k *h. vnyhm69m9bdrwered 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 width 0k(t )2jvwj4sleq 50xe.600 m with a soap film formed within its confined area. I452lev s0qkxjj( ewt)f 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 rectangular frame hac +fwr yxz0z niqf.-s sy w2jt .7fpuu4+/f(3js 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 long side so that the frame is 12 cm4ju.3yqfsp/s nzz(f+ f -+ uw07 r2ixj.yt wfc square?