The three common phasg)lckz7.v 6 xirk1c 6fes of matter are

  Density is

  Substance A has a denr-wd m 8bee k0egzmv-5i4rj5g*b j8 ;vsity 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 ab c h9 ; du voqy*ptb8lxp:.em(5fgy4,pjb0k ( unit of pressure?

  Consider three drinking glasses. All three have the same area base,n1t/ ttdz .vuh/r)6hu 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 watertz). /n du6 vththur/1 than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outside a tire d)i) xeoa;2bd+e w-zts00f hdcalled?

  When atmospheric pressure changes, what hloiaha)w 2h1 v4.hwt 0appens to the absolute pressure at the bottom 20wwo1h4ta.h l )va ihof a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive is;js:fdi3-x: np2etto 2.0 m beneath the surface, what happens to the- :pj i:dx;t23snies f absolute pressure on you?

State Pascal's princi7le4x g 4a,uqd6,jy alple.

State Archimedes' pri-x6k0ng;b+w p gxn3t m3u now0hqc;.fnciple.

  $50 \; cm^{3}$ 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 const08a7uwk 66g gjud9bt hant density, what happens to the juh7ggd6aw 89tbku60buoyant force on it?

  Salt water has greater density than fr,nhjn- (i ja/) q(54jjdom b zt::elnresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater r4/ei:-lt q, j5hj(mdb)ao(n:jn jznon the boat?

  Salt water is more dense than fresh water. A su35 5:pdz mgkel78bslhip floats in both fresh water and salt water. kgb 5ull7 s83zme:d 5pCompared 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 mercury. Wherkzsjjm5 5ur(: c *sa2he is the buoyant force on thksshjc*5a(umz :5 2 jre ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, rv/f cs +3n*ukr 4ggf)eight next to a 10-kg piece of lead. Which has the greater buoyant f4uegfsk v3 n/+frcg*) orce on it?

  A piece of iron rests oecoa3,0 nl5lq/0s ueen top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in thec l0neul,eqe5 s/o0a3 tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top of8)pyjjddb0j.7 / n(b0l ceefg the first piece, and does not touch the water. If the top piece is taken lg(/y8d.n defj0pjj bcb7 )0e 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 pointl xqh *rb4wa9. B is larger than at point A. Where is the b.la4h9qw *xr speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontalshuj5- xz2xkd( 4/wmy pipe. If the pipe widens to twice its original radius, what is the flzh2jxds (mk5-4w/ yx uow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe ekw) * x-5xdhz+o,adjnarrows to half its original radius, what is the flow speed i *)jkheazxod+dxw,-5 n the narrower section?

State Bernoulli's prk r,n :gvh2hwbb515 bhinciple.

  Which one of the following is associated with the law of conservation of energyxdae/:j3hd. *en 2)lu iw1+nukigk: k i2)kg/kudknh:xe +.:eii n3ua 1wd*l j n fluids?

  As the speed of a moving fluid increases, o43+4d heb sfythe pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is largerw6 :0g)siyzai than at point A. Wheresi wgy0 z:a6)i is the water pressure greatest?

  When you blow some air above a 9-y4s0ch- l5loap +: gd c(qgdmt/zhypaper strip, the paper rises. This is because

  A sky diver falls through the air at termi3 +;* jkkufmqsnal velocity. The force of air resistance on him i jkumfsqk*3 +;s

  Two Styrofoam balls, of radii./ozgtc2-+a os jwj1y R and 2R, are released simultaneously from a tall tower. Whichy a -zoo+.cwg/j2tsj1 will reach the ground first?

  When a small spherical rock of muc,1aaj3 g8 fradius r falls through water, it experiences a drag for1ucjg a8f,a3m 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 flow of fluidjm8v e(mr)h+h through a narrow pipe? That is, if you made a 10% change in each of the qumev)h j hmr8+(antities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are tg+ qx.bl */c pgp.nxceb7)xa0he same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous la.g/xxpg7)b c x ben +0pq*.cflow 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 have the same diameter, but pipe B is twice as6v )otf r*e-fk long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the flow rate in pipe B is Q, what is the flow rate i*fvk-f)to6 er n pipe A?

  When soup gets cold, it often tastes greasy. x pc4u*/vaa8q ao .ad: 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 us "physik pda.a/a4x8cu v :qao*ers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water psjem, bg(dp 1l;y33rrises to a height h. If the diameter were half as grea p 3g(,3rs p;bjl1mydet, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that l(t ,aa,(o4h; xbanom(v,hobk551yjcuw 2vo 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 v4xc mtvao52(olknajobh (1w ,,obayh5, ;u(the weight of bug B?

  Certain insects, such as the water ++h0.zeub-kp,j k aoamt2s/y bug, are sufficiently lightweight that they can run on totk2z+a,ae obs+mh0u/ yk. -jpp 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 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 has a mass ofsmg .fbo4 2zll j7)gj7e28vfg 30.0 g. What islggme2 b4jo ls7v.f fz 7)j82g its density?

  A liquid has a specicks 04),f ;xnt9:m/lcjcgv rmfic gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.wp;0 8v2g0yr0aczyx n00 cm. What is the maximum pressure it can wzg y0;rp82cv0ax0 ny exert on a horizontal surface?

  A person weighing 900 N g7b ly1c0ia 0nf 8gr7zis standing on 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 120.0 kixc z9c0+v 3vcq3vyf( 2:yxum in t09ic kfcqvv3+xyu3 ( vyxcz2: he ocean?

  A circular window of 30 cm diameter in a submarine cax5 v,bv4ohynh2dt;z 9 n withstand a maximum force ofonv5,x9d 2vhz;y 4 bht $5.20 \times 10^{5} \; N$. 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 p wnvoqx (9l,z;ressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surfachk 7+ umwchc8* q szzmhn:v89*h(gsi6e of sea? (The density of seh wmzz98u**+v c(hhqh8 n7i6gs: scmkawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure e 3 /qex4x /smk28yr e-/ycemuat a location 15.0 m below the surface of sea? (The density of seawatey2ue// qr4es/ekyxm -3x 8cmer is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits onw8 tay2 rm1e8.awd/dimx x76t the small piston of a hydraulic machine. The small piston hamry e82ta6 wdamt/w7 .8x dx1is 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 p c2zva) ol(fx6iston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be appliedo6)c( alvf 2xz 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 vif4qu 2 mpk15 -xgft*be lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 c*-15vpkfq ixmg uf4 2tm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, awo/shq8-i b8j7 l .hwknd its large piston has a diameter of 40 cm. The lift rawb7h- q k8.wj/liosh8ises 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 is the buoyn5e 95qvy5 :vy 9zoxeqant force of thyz5veqv exno5: y59q9e water?

  An object has a volume ofq1lls60l- j.l n9qndj;b 2nmf $4.0 \; m^{3}$ 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 submerge+d ed7f4+nj;;qxcqw s d in wate ++sd7fd q4w c;;neqxjr. What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gocflt pl0 ka. wz72/vc9yplyg-cr5z) 1ld is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarinixsj:*2(yu ;)h)p*p nfz zptmp 1.m dve (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/aljmk m6; 6sn air and 6.86 N when it is immersed in water. What is the specific gravi6jmn;am sk/6 lty of the object?

  A container of water is placed on 6f( b5n,eku6rwt(d 3pn . dsiqa scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not 6pq.e w5nb ,(k 3nidsr 6dft(utouching
the bottom of the container. What will the scale now read?

  A piece of aluminum with m9f( vrzj9oe+ a 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 of lengthlfueogu0 v6)rct,1 -e 12 cm and diameter 2.0 cm will just barely float in water. What is io 0tl1cv)gfre6- u,euts mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, an-h92yzyy1 t+mty o,nyk cbtl+g31z; bd 0.50 m high. How many kilograms of mass can be loaded onto the box befnby 39y; 1-myz t,+th2 o+1tbykgc zylore 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 h5 aj* hd7z:3/f9acbi e hni6esurface of the water. The weight of the displaced water is 2000 N. What is the weight of the obndij6 e7afh*cab 95/zih h: e3ject?

  A solid object floats in water with three-fourths of its volk 2se g3 s.*w;-9hr2ndqgfmimume beneath the surface. What is the hn;3*kdfm-gq e.rsi29m2w g sobject's density?

  A 200-N object floats withh.-)vh d(fm ms three-fourths of its volume beneath the surface of the wa s(vm)mhdhf-.ter. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is tw1-f co-*khhshe minimumk* -ohhf-c1ws area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a 7b,d00imy0 hjhi6)k7ndwm0v; jm oqbpipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 466 vjhs16(3zkngcdmx .0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velcn gzvm 16x(ds j6h6k3ocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressu ;4/lsq:s (galqr dfb:gis /;mre 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 e 3.z9qhl7 x+i;ol kbda drinking fountain with 300 kPa, if the fk+o.3ze;xblqhi7d l9 ountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that holdsq 1(fk vqa(1rb water at a depth of 15 m. At qa(f1(b vkq1rwhat rate will water flow out of the hole?

  Water flows through ajnu 2p6htyz1s t+. ghz4* j*dk horizontal pipe of cross-sectional 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.lca j;y2j4 .; osxkt2 l0luk blc.c:o3 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 o ;y.tokbol clju. :;l s2kl c0c243xjaf 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 ar-(p6lc ;4c e3qclbzhctery decreased the radius by 10%. By how much ;cl 6c hb-q(clz43ecpwould 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.r.ma+ 6cmrp +d Tube A has twice the diameter of tube B. If water rises 2c amr.mr+ dp6+4 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 Nnjldway9o,5: /m. How high will water rise in a capillary tube of diameter jn :wd5,yal9o1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass cacl*i 27qqq(gx pillary tube with a diameq7x* gicq2(lqter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wi i(n+w dr ;eezd4y-.wh/g 5tkater rises in the tube to 4.0 cm above the level of the pan. The surface tension in the liquid is loweredre- wk5ty+ / (wiz.i 4dndghe; 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 0.600 m with a soapxtloit4-/ spst- 2uxg*7g.ss film formed within its confined area. If the surface tension of soapyp.t7 t2is uos4*-- xgs/txg ls 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,as ef h1s1+t/l 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 h+1t asf1se/lside so that the frame is 12 cm square?