The three common phases of matter36zt,)g lbbkd 9pzky4 are

  Density is

  Substance A has a density z,qybapl9cspnrra 41 g. fjqu :5d; 76of $3.0 \; g/cm^{3}$ 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 of7+ywcr:qgq)s.uv d8 x pressure?

  Consider three drinking glasses. All three have the same area base, and aidp/(x brf3+t 61r9vy*vk,5lznvu xrll three are filled to the same depth with water. Glass A is cylindrical. Glass B is wider ak 9dx53irubtp *6vln /v+x yvz,f1( rrt 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 insixc q k2hua+x38de and outside a tire called?

  When atmospheric pressure changes, what happens to the abz;d+8khu p(dyj6esd1solute pressure at the bottom of a pool8u ;k1(z6ddpd hjy+se?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.0 m beer(*sns-d s).j mwnm 6neath the surface, what happens to the absolute pr.j -( s)6dmsnrmw ns*eessure on you?

State Pascal's principle.))bqsf 1lxoj;

State Archimedes' pr oaa3qa4q.wxk-i4y, m:rx) p binciple.

  $50 \; cm^{3}$ 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 happb-cgo50yl-q ko dt;;ounu/yxc7 ee; ) ens to the buoyant forceo0ex;lyd--u u7gonkct e;c )5yq;b/ o on it?

  Salt water has greater density than fresh water. A boat floats in both 81dx in4s :d zj7n7n.o mq*3t7xfso yyfresh water and ixj*n i81qy3yom 7ssd4dn fn7 x:.zo7t n salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship flocyxu9 r9f 2gh,ats in both fresh water and salt water. Compared to the fresh water, thrgy9c2 ,9xf uhe volume of water displaced in the salt water is

  A steel ball sinks in water94, iwavh:dx h pu*1y8n(h khm but floats in a pool of mercury. Where is the buoyant force on the bally( kw:ix1un 8hhh admpv,49* h greater?

  A 10-kg piece of aluminum sits at the bot;s4w bsz-*iond:a /s p3f6o letom of a lake, right next to a 10-kg piece of lead. Which has thn/ l zwife;b ps4:6o-so 3as*de greater buoyant force on it?

  A piece of iron rests on top of a piece of wood flju2c6y7;p:vnxt+ btxdf ;8oa oating in a bathtub. If the iron is remove y;7xxdotan68u:fvt p+b cj2 ;d from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on ;r+e.rzd 9x fctop of the first piece, and does not touch the water. If the top piece is taken ofdr;erfz 9x. c+f and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diameter d aod)sv3 *-mcof the pipe at point B is larger than at point -sdo*m3ca d)v A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pip00y; l mfqpz;(slr4tae widens to twice its ory040rapf lm s;q(tl z;iginal radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows8q 6z yjlbu6 gfs+u5d2 f4ke+w to half its origina ykf5bdq2+ gfuls8ue w6z64+jl radius, what is the flow speed in the narrower section?

State Bernoulli's principle.-84 x5ajin stpg7dn/k

  Which one of the follow. usauv/ yd:m0ing is associated with the law of conservation of energy in fluidya0v u s/.u:mds?

  As the speed of a moving fluid increases, w4,i: jd rqw*a 8*upuqthe pressure in the fluid

  Water flows through a pipe. The diametl n16, khh+h0wdq (esy:t3xyiej51xc er of the pipe at point B is larger than at point A. Where is wcehylt5 n6j q:syhx1 ex31h0+ k( ,idthe water pressure greatest?

  When you blow some air above a paper strip, the pape5w-- wox 31ssssgk;nl -f7 vyvr rises. This is because

  A sky diver falls through the air at terminal velocity. The forcrgld 2 i47ax*rh zun/3o jsu,,e of air resist ix7lg,s2r/oj,nr u* 4 dhz3uaance on him is

  Two Styrofoam balls, of radii R and 2R, are reelq02 vdma8 *tleased simultaneously from a tall tower. Which will reach tl*ve2m8d t0a qhe ground first?

  When a small spherical rock of radius r fall x9i5gwfm.m .fs through water, it experiences a drg.fw. m9xfi5m ag 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 greatest effect on the flow of fluid bf7mkx:cq5 t680n bsy60 f rorthrough a narrow pipe? That is, fn7kfbt6 mox:0b65 s rqcy80rif 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 sam 5m58nyviu uv3e length, 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 tv5n 35 8uvmuiyhe 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 ispuw um0w.w lf(u+e/r. twice as long as pipe A. Water undergoes viscous flow in both pipuurw f.0wpume(lw +. /es, 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 in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy3v oz/zo jeail3 yntj54-o ,i3" taste seems to be associated with oil spreading out all over the surface of the soup, instead of 3vaj e/z5toz,j i3 ionl-oy34staying 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 ris1maoj5 0,mx* o tn1dznes to a height h. If the diamet *na1mxn 5tmz 1,jd0ooer were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight thab ysz 4bru(k imy3auk-4: t31nt 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, snym3baukk3trbu- 1 z 4i( 4y: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 sufficientltp/( pyj:e1 ps:dkt;ly lightweight that they can run on top of water without br;dl1 st(:k pj:ep ytp/eaking 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 dimensioybn ,ktj:xq/,ns 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. xk,q,: t ybn/jWhat is its density?

  A liquid has a specific -:*lhr fmrkz2hr5l jbi25pg2gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measu7 0lj8 yf8n yoo*tdqj7res 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizooj7f78 ty 0n qjo*d8lyntal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe h:h6bp jeyp ;,oas area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 12g:my01m4j/egk s a d9d0.0 m in:gy kmdm1 4ag0s/d ej9 the ocean?

  A circular window of 30 cm diameter in a submarine can withstand ixbwl1xt:m2 5 a maximum force t 2iwmx1 bxl5: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 pressurelm (tdwl,gk; ,myc8fok12c 1. opi)nn is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? ly8us .j9r2j l(The density of seasr2ujjl98y l. water is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sea? (:nv7a8g*7k4d +zv x x.wi lp ekn)vyr)The density of seawaterl.r7+z di *)v7k yv)xk8a4 vxpg n:nwe is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of(2yuv/toc)dpzx+s z p0ezh )4 a hydraulic machine. The small piston has/zyuev)(ppotdcz s 0 h)+ 4x2z 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 radi sisigu9;1yp z+)gy )fus of 5.0 cm and the large piston has a radius of 15 cm. What force uiy+g;p9sgy)i)szf1 must be applied 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 be lifted by a 25 cm diameter h b.o+raii5lg vuo;79nydraulic piston. What force needs to be applied to a 5.0a vu9 ;nliro+.i75gob cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.xk7yauo) / pptnzxej: x23p5r4f9gu 40 cm, and its large piston has a da/z7kj xp:pnx94r2 og tu35fx peyu)4iameter 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 and 30 N in wx 7syjrr i5klp) av0u)tg/. y)nu33 ldater. What is the buoyant force of th3 .luia 7l)ujgnr5/ 3xykrt d)ys)pv 0e water?

  An object has a volume ofig,hu7*ihya4 (6b 1gy rg ;h3facmb j; $4.0 \; m^{3}$ 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 submerged in)wtwfe0chj;/b b x4qr+b -cw4 water. What is the tension in the str;tw-w) xrcj/ 4ecqhf0w b+b 4bing? (The specific gravity of iron is 7.86.)

  If the density of gold sy*5o0hv to;nt3*6d zb baq8nis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density = i*g ;pps,,2vep yh;ng1m0 crg $7.8 \times 10^3 \; kg/m^{3}$) 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 immersed in (u;b beddho9vj(wp o8w *2y;e water. What ( ybovb8*wduowe;d9(;jh2 p eis the specific gravity of the object?

  A container of water is placzc1 ya;njk4 8s69 eizced on a 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 96j4nz81ckacie s zy; water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mqn0+hdh/l22 ng u n7gof;)gn sass 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 will jusw;9vil;mfrz0euzu-f3 * b k:rt barely float in water. What i 9u-;wbieml3rr;0 fu:zk*v zfs its mass?

  A rectangular box of negligible masd13byik.dgaq(0qxv: xvyh k)3cb .o5s measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a l 3y 3 iq(v:hd5 k0.bo dg)ax.y1qcbkvxake?

  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 ha4 a1h /fbyspp2h tzq3x((ua*p lf its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is ash4pf ( y/*bqtp2p hua31xz (the weight of the object?

  A solid object floats in water with three-fourths of q2h2 mdm*-h18y3dzmn wj bpk8its volume beneath the surface. What is the object's z2qm*3k1y2dj bh n p8hd-m wm8density?

  A 200-N object floats with three-fourths of ic/h l k9fmsrpwh. ,22fts volume beneath the surface of the water. What isw2f2lk9/rmhhf . ,s pc the buoyant force on the object?

  A polar bear of mass 200 kg stands on gavg) a 6ndc94an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gr6avc g)gd4 9anavity 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 the flow rateetj6ie vd,zwy0/4c j9.

  Liquid flows through a 4.0 cm diameter pipe at 1.0, cw3nkhyvjkiq 2/*m, m/s. There is a 2.0 cm diameter restriction c, *mk 2khyij/vn3wq, in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontalog0n qlrpyta 72; u6 :v9wbuj8 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 flyd;4 fq eu4:tcnyk *rd79. sg0a jx8bountain with 300 kPa, if the fountain is 30.0 m above thr bj;9xa84suy 0d y7tld*n kq: .4egcfe pump?

  A hole of radius 1.0 mm occurs in the.sz ( tjwms6s7 bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flo7st .s6(wmzs jw out of the hole?

  Water flows through a horizontal pipe of cross-saf;v)w 4 7ya2vcy bin.ectional 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 pou *berp e9t+u/zr 4.0 L of oil through a funnel with a neck 15 cm long and 2u p+eet9r/b*z .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 decreased theiz((bpo7o,o o radius by 10%. By how much would the pressure pro b,poio((ooz7vided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube */t 8u 6 mdyhvl1kysj*A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise in tube Bu/tsl8yyh*61j*vm kd?

  The surface tension of water is 0.073 N/m. How hig2jre nfkf h/89h will water rise in a capillary tube rh29ff/8 kjen of diameter 1.2 mm?

  232

  To what height would water at 0 deg -)soh,vu bhw-ree Celsius rise in a glass capillary tube with a-)buhsh-,w ov diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wate:o0 9vde)oqzl79yyqyysq7: l r rises in the tube 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 theoo 7: syq7v:q l9qyz dy0)yle9 liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a-yzs xsfd -it: /wo 11kc)r8sy soap film formed within its confined area. If the surface tension of soapy water ic-:t1w xy18zs ssik-o /) yfdrs 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 (; ooty+z qd5his 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 o(t zd5q y;h+owork is required to move the adjustable long side so that the frame is 12 cm square?