The three common phases of matter are jmyh l.pzqj.- ;47zy.2tv ftk

  Density is

  Substance A has a density pqu zv:o,d*.wof $3.0 \; g/cm^{3}$ 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 no (;t , rz6w9aqlb3miqit a unit of pressure?

  Consider three drinking glasses. Al+we p-xof6l fe;6hrh1l 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 the bottom, and so holds le+f -pehrlw;6h o1x f6ess water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference ihi74 :a2lwogbetween the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at thr0 2bg.n1qdm2 3)6 cucpzhjkhe bottom b.mqg c z2 )c312khnpjd6ur0hof a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.0 m be5nz;w-nh p:0i8hy7s 4o*2 ou9 nrr yo:ltpr peneath the surface, what happens to thrr:p4 p*:;-zh28hsrn5n 9u 7o i yo toeyp0wnle absolute pressure on you?

State Pascal's principle.hmqv36zonwic oun; m7,55gc .

State Archimedes' prinho dik )bte (8hnd.5s5ciple.

  $50 \; cm^{3}$ 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, whatxpb qe-+20y bl9z/-2tjanwhx happens to the buo2xjlqx y2 z0-e+pt/whn- bab9 yant force on it?

  Salt water has great(ltcwan: m9+(p )og v d3bpb:nhge3p1er density than fresh water. A boat floats in both fresh water and inm en(d gch)3lvbtnp g+b1ao:p(:9w p3 salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh wate4+ y -lqi; sil;l+( hmpg5vsier. A ship floats in both fresh water and salt water. Compared to the fresh;4li- hip5i;mq +gl( y+eslsv water, the volume of water displaced in the salt water is

  A steel ball sinks in water butcq; 4 z8u45fu52jzzleg/tq*nh pqy f6 floats in a pool of mercury. Where is the buoyant force4y 42 p*nfz5;5q /utuqhqz8zfg ejcl6 on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-gu vn; n*3*liikg piece i*i* v;g3n lnuof lead. Which 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 is jmw0( s9i6uc n,juc9ron is removed fnscm9wu9u ,6(ic0sjjrom the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wooah6vyp al5 y21d 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, whap2yh ya51v6a lt happens to the water level in the tub?

  Water flows through a pipe. The diameter of i)ivo8 3ese yrz 6d wst*q-32wthe pipe at point B is larger than at point Atr 6eov8i3s swq-3)iw2dy*e z. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe wq:j)r3vpgth99bmk d2 idens to twice its original radius, what is the flow speed in the wider sectiovrjh9: m p9)ktg32 dqbn?

  An ideal fluid flows at 12 m/s in a horiz7txn 9jld2+04gtng 0cvbja 0w ontal pipe. If the pipe narrows to half its original radius, what is the flow spen gctaj04 l+n 7bjgdw00 xvt92ed in the narrower section?

State Bernoulli's principle.1 ge o,ngtp4j--cwzh47w, +butstd m4

  Which one of the folzgeg3 cx3gy.lvk(d 0*,c +fmi lowing is associated with the law of conservation of energy id*c i ,k3l.ef( vm +ggz3cyg0xn fluids?

  As the speed of a moving fluid increases, a)wwqmd3un6 ; the pressure in the fluid

  Water flows through a pipe. The diameh/ 9,1pg qqw8sj8)ppyc7tlxc b0 5yeu ter of the pipe at point B is larger than at point A. Where is the water pressure)yc1b/x y c9q5hw8p qspl0, jeuptg87 greatest?

  When you blow some air above agchekt2 bc4 g n7i. v5lk*8t8f paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of air resisth08hii;qap-a* : ;sw/gslw6am o ql;gance on him i;phag/wog6 s- w0l hl;a:i; sqqma8*is

  Two Styrofoam balls, of radii R and 2R, are 0 a4ji2cpui f*released simultaneously from a tall tower. Which will0 ua *ic24jpfi reach the ground first?

  When a small spherical rlu0f3( dbls 4vock of radius r falls through water, it experiences a drag 34 ld(0 ulsfbvforce $F=arv$, 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 greatei dccim2:4.o rst 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 would cause the gid:c2o4 ic.rm reatest change in the flow rate?

  Two horizontal pipes are the same lengt 6fia c0k3tb7 3p.raksh, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the akt70 .pc 6ka3sbrf3iflow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have ty gn82qats6 9rmq x6*ohe same diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subje qx2rt96oyg6*8q mnasct 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 in pipe A?

  When soup gets cold, it often tastes greasy. This "gref:(+ fa ; (,b) zyadpslaoqi2nasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physq)fz(yaf ,pbai;os :2(l +n adikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to a height h. 2un8hc486popnp lp 7 lIf the diameter were half as great, how high wouu lp8cn78po pl 2h4p6nld the water rise?

  Certain insects, such as the water brfv a32oi; n9vug, are sufficiently lightweight that they can run on top of water without breaking the surfan9v 2ivfao ;3rce 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 bug B?

  Certain insects, such as the water bug, are sufficient9gq -ie0k,wdm ly 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 tig, ekwqd09 -mhe 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 2z7qfbrs4;rw7*n( t hf.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its densift *rr(wns74 qz7bhf;ty?

  A liquid has a specific gravity of 0.357. Wh.4abpines v8k+qm 4u /at is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. s7mtilc my30r h *84qq;mrj ie-,4q un What is the maximum pressure it can exert on a horizontal su844rqsj3ce7;im y u, *tlmhq r mn-i0qrface?

  A person weighing 900 N is standing on snowshen 5wqf7elafi * m:i78oes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarineard-3u40vg ba;sobe; withstand at a depth of 120.0 m in the oca 3-o04s r;gdevb;uab ean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum forc jbk3)ql v3nt-e jqk)v3 lnt-3bof $5.20 \times 10^{5} \; N$. 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 is 300 kPa?q 9x1s/g-/lbng6on:h(q0f ds fbfo j*

  What is the gauge pressure at a location 15.0 m below the surface osn9z4 uhk 3 (-:vugnp y:-memjf sea? (The densu9jp m4hvg ks(z-3u: yn- men:ity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the su,kuj8qfhz f66 rface of sea? (The density of 8zhkj qf f,6u6seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. T(+lag 0jv o-u8o 4v wr*t:czgihe small pistonaozigo l84:r gcvvjw0 -u+*t ( 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 piston has a radius of 5.0 cmzx7awfk /w2- v and the large piston has a radius of 15 cm. What force must be applied on t2w /xfak7zv- whe small piston in order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hz jk22*i dga,tydraulic piston. What force needsjd2 zai *,tk2g to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and itrvx,m9.io g v6s large piston has a diameter of 40 cm. The lift raises ,6rxv.vmgio9a 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 anh50tcsxm b zxcep.u we0 /b1-*d 30 N in water. What is the buoyant force of the mbw5c ht s.-b00u1zpxe /e*xcwater?

  An object has a volum1jdly/sys 2a47m vd 1ue of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of pg+s491u7y oyrjc6ur solid iron is supported by a string while submerged in water. What is the tension in theuj9 osrp1+r 76c4yugy string? (The specific gravity of iron is 7.86.)

  If the density of gold is ay2 d xehq0q4;8cdzurc:5;ywd du1 7y$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density *gnabf88tl6291m ex5 uayy ml= $7.8 \times 10^3 \; kg/m^{3}$) 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 60 /.qyy+ vgjdk.86 N when it is immersed in water. What jdy+.kyv /q0g is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a 2wn*j( 1xc8j 2xkur9 b 2p:wfxi0-g p r2x8iu pj9:cn1x bk*wf(2 xjwiece of copper (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 ssesw-.t c8lo.saiz0m mfs oj 18z4(;s 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 wi 1fuiuu gs0k ;d7:ndk2ll just barely float in watduifku1 0sungd2 :7k; er. What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, 619pict8t wm0bsbi7s and 0.50 m high. How many kilograms of mass can be l t6b i8tb7s1m09icswpoaded 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 5pbne:cm i6/sits volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of/m nb65icp:se the object?

  A solid object floats in water with three-fourths of its volume beneatk-zruvvvf- h :-l-l q4h the surface. What is thhll-4 uzrvf:- -kv-qve object's density?

  A 200-N object floats with three-fourths of its volumed7snnfmqlac71bhg2ew6 1x 4 8 beneath the surface of the water. What is the buoyant force on t x6h21qcs f7mben4 dngwa1l87he object?

  A polar bear of mass 200 kg sta4 ypyr3jd -2y e,+yefwej ap51 ciha,-u.4kmtnds on an ice floe 100 cm thick. What is the minimum area +p ej1d5ca32t,yw-y ry,efm ae 4phu. k4-yij 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 pipe of diameter 3.0 cm at j-1 fzho-cnphpk e *3v 3kha mq*h1.1m2.0 m/s. Find the flow rate.

  Liquid flows through a 1g0v f/sx yf 0;l ccoa:28gcmt4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. 0cc otx8s2;ffagvyl m0g 1/c: What is the velocity in this restriction?

  Water flows at 12 m/s in a horizojp; g w3ke(rgu z2,/kental 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 ao;6p-) 0n viip-nsm:y bpt vv; pump to supply a drinking fountain with 300 kPa, if the :p0p-nvt;i;-6n oipvs vmy b)fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tanaomz-ml2*d r 8xh: 6jrk that holds water at a depth of 15 m. At what rate will water flow out of xm-rj8*:r hzam2d6lothe hole?

  Water flows through a horizonta) 3zqsflt*9k wn3dt3c-zrv gcxsc26-:d7 eqfl 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 r 1f+4 ashl-vuof 0.20 Pa-s. How long would it take to pour 4.0 L of oil through4 rv-ulha1fs+ 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 any drag effects due to the upper part of the funnel.

  Suppose that the build-up ox :i9yzl- 5t pw3-pjt.rargr3f fatty tissue on the wall of an artery decreased the radius by 10%. Byz9:ptip t53r ay-rg -j3wrxl. 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 dia 2oh;c5h/afn1 0fzfkz meter of tube B. If water rises 24 cm in tube A, how high will it riscznz 2o1a/0fh 5h kf;fe in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a capill1q8(plh9;fsn m:vylx ary tube of diameter 18yfv p(nl l91;:ms xhq.2 mm?

  232

  To what height would water at 0 degree 4dms5pwt*4kr Celsius rise in a glass capillary tube with a 5 k4rpmd4*t wsdiameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the )lmsai:w u r44n:fgu8 water rises in the tu 8rsigw u:4 mf)an:l4ube to 4.0 cm above the level of 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 width 0.600 m tn1wu0 w3(gqcu 9ew/swith a soap film formed within its confined area. If the surface tension of soapyuu te0wg39(wncw/1 q s water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular 4pwlo/p/d-jpow 7x3x 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 tensiooxpp-4wj 7p/ x o3ld/wn 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?