The three common phases of matt 2x b-j13o9 vc inmu76v8fxolher are

  Density is

  Substance A has a dens5zr w25faa e5fity 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 press,o;qop( z x)s2r hj8aiure?

  Consider three drinking glasses. All three have the same area base, and all thrpg .-g :p+qj,w6 /txsq; hlatmee 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 lpwps;hgqx6-/tq, jg: m. + taat 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:)5gyx yond 8y the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pre/3ivkt +9 n5/hykq-n u+wptmwssure at the bottom of kv /i9+wq+/u-n3 k p5hywntmta pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2frf3 :t40/ *61g kz mgk9kwonyuh/gbo.0 m beneath the surface, what hm:*bo4 oft0y1z f 6/u hk 3ngkg/9kwgrappens to the absolute pressure on you?

State Pascal's principle q(t;y ax815oie/xzhuzyg0ms )t t:.t .

State Archimedes' prin/xnjl;o7j3mzfi l 2-ociple.

  $50 \; cm^{3}$ 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 lyeee-dnu kq478srm 0(5s8bt, what happens to the buoya48(mds8u0 k7 5nrleeyt-bes qnt force on it?

  Salt water has greater density than fresh water. A boat floats tk/yqqf h) +ocv-3 sd6in both fresh water and i +)cvkqy s6h-q3dt /ofn salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in bos6m)hq ) x)a zbz*j3zvth fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt bzx) qa6m*v3z)z s)hjwater is

  A steel ball sinks in wa )va.0gv6cz svter but floats in a pool of mercury. Where is the buoyant force on thecvvzsg av0 ).6 ball greater?

  A 10-kg piece of aluminum sits at the botto-0 nt3j8orwjq k5hr ,dm of a lake, right next to a 10-kg piece of lead. Which has the grkr-n 0q ,rj53ho8dtwj eater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating zkq51v z 7*cwca8z n(y3jh z2lin a bathtub. If the iron is removed from the wood, what happens to the wateccz ak12z ywz8(vnj3*lq7z5 h r level in the tub?

  A piece of wood is floating in a bathtub. A second pi av 8 ky:4qhhwwdy:a0:ece 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 le::qd: w 8whyhyak4 v0avel in the tub?

  Water flows through a pipe. The diameter of the pipe at pon -vox2vl 0;wekdqpfun :b79;int B is larger than at point A. Where is the speed 7qv;n20b opx:ul;vk ne w-9f dof the water greater?

  An ideal fluid flowsf:1 wk7 0 crqk65ga+7qqaamlk at 12 m/s in a horizontal pipe. If the pipe widens to twice its original rad:qgr1 0f6wq7kl c+7 5kqaaamkius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to half1,74qogg;h 6 3oje mbced+thj its original radiu6 gec jgto,domj +7 h13h;e4qbs, what is the flow speed in the narrower section?

State Bernoulli's prin*up/wmm :* 5-; ptxbzzmzj5i (.:qcztnf h4g wciple.

  Which one of the following is associated with the law of conservation x)ss ps5w.hu vk3-n th/5d(xdof energy i dxv/shnhdtwsx)p-(. 5 uk53sn fluids?

  As the speed of a moving fluid increases, the pressu:nccp7)y .6pv gnww- pre in the fluid

  Water flows through a pipe. The diameter of the pipe at poh6dhuz+pr mrb+f 9-. /u qo*dhint B is larger than at point A. Where 9obh6u.p+- uh r+/hf zrddm*qis the water pressure greatest?

  When you blow some air above a paper strip64tw6dh(ji tl, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of xlm ylv rk l1l uv09r3e)o9i+8air resistance 19 u8r yli 9r lllvxv)3+0mkoeon him is

  Two Styrofoam balls, of radii R and 2R, are released simult27suxb2-ckutf) b :pdlcg/ 9caneously from a tall tower. gcu p)c9b b/c7uxd -2:tlks f2Which will reach the ground first?

  When a small spherical rock opwlytmv,q,s- hj 89j)oofc3 (f radius r falls through water, it experiences a drag fo3m-sj)8tl,qyvpwooj c,9f (h rce $F=arv$, 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 (li.y 3 c9twh)dhakw.5 wy qx.on the flow of fluid through a narrow pipe? That is, if you madyd xc9wkhwh 3aw.).5 qt(.iyle a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes arq*, +w vqluhktbrv:r*-ojr1+ e the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pre,l *wkrvr :hqbjtuo* 1-v+r+qssure 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 samybp 33h.p,lgx9s9 alqqe, - wtp1q2zv-b: fzpe diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both .eq1 px9w 3tl qp-f: ,zbbq2y9pa,-gl3sphvz 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 in pipe A?

  When soup gets cold, it often tastes greasy.p* ezb8s 9)urf This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, inup z)9b r*se8fstead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placedv/pnbk9 15a or in water, the water rises to a height h. If the diameter were half as great, how high would the waterk/vpoba 5nr1 9 rise?

  Certain insects, such as the water bug, k fd5ejfapb(6a+* gnr2*hjh )are sufficiently 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 a +p*fan2j d5f 6)ra(*khhgbejs wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that they c-qsl90 x, aexban 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 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, twiceqb e,a9xl0x- s 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 ha:r0*w9atwv3 :bpwhu )vixv ,bs a mass of 30.0 g. What is its densivbrwu)a0* : v,hxtp9bwv:w 3ity?

  A liquid has a specifplzcd (5ed gu)-j3c) dic gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 1m1) oig4g-/ nynplra3 0.0 cm x 4.00 cm. What is the maxim3g -/i1 mg lyap4)rnnoum pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing o f y:3gweoa;9xn snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withskplf- janba + ;h+rk655ky/ejtand at a depth of 120.0 m in tl6arh/ pje f+ jkank+ ;yk55b-he ocean?

  A circular window of 30 cm diameter in a submarinez y 9rhm5u zw0viac;(8 can withstand a maximum force5au9zw0 r8mvi;y(hcz 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 absol l f.-u-,y qhtml0h ap-gm/c pbcf3;t6ute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of seiazxh6 m pqcoih/* k-56 +ed;zacs+x* a? (The density of seawater h6azi* /+6k-d5emi x pchoxcq*s z+;ais $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a loccd p4,6emnyhvkz -ae:zrpd2,m vf1; ) ation 15.0 m below the surface of sea? (The density of seawater i cdez)m,yh avemrp:6d - 4,k2fnpz;1vs $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic mi s)xb9bb 7y r+ern+o;.t/3fasxc l. bachine. The small pisto; bs.s3bri+bx/ln .7fyr9xt ) oac+ ebn 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.c4 f9 x0rk +umxvyv4c2:h5whu0 cm and the large p 4h2xywcu+x v49khmv :ruc 50fiston 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. tvcq* 5 twe:hic3f :,vb91vl eWhat force needs to be applied to a 5.0 c9*eh tve:3livc , vc:1bw q5tfm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a dicocoi( 98rfi4 ameter of 8.0 cm, and its large piston has a diameter of 408iifc o9c4o( r 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 water. Whlo4.q dzwr*.tw.m,n .w c6yv sat is the buoyant force4mv *,.cw tw s6wzydq..n l.ro of the water?

  An object has a volume o+p ;izz1 hcia1 til96j fla4c0f $4.0 \; m^{3}$ 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 whileclbumh6* ys(n.oz /ni+ vq*1h submerged in water. What is the tension in the string? (Thez *y .sncl6uh /1oq+b(nim*vh specific gravity of iron is 7.86.)

  If the density of gog1o:dgji:1us)9f q iald 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 submarine (densi6dil e amqh4/.1ylg :kty = $7.8 \times 10^3 \; kg/m^{3}$) 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 wtb0a8q-4*x2j zrrako hen it is immersed in wate*bxqza80 2ajo k r-tr4r. What is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 semxw97 a30n2hkks3h g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a nk30mw2 9 a xes73hkhsthread and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum withlre vo(*r 4d) e(n7xlu 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 length 12 cm(me6u,a-p 4vabb g+tc and diameter 2.0 cm will just barely float in water. What is its ma 6ag+babt eu(pmv-,c 4ss?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 tec 1wa,9h-c j+7g qbmm high. How many kilograms of mass can j-tbc 7+g9ac,1qehm wbe 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 surface of the water. wc,z hx:5qpk5kb:f -q The weight of thc-h x5 pkqk:qwf5:z, be displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourggxlle7aw(h/ ronmb-ks( ; 4k.3v-nj ths of its volume beneath the surface. What is the object's density? kg -/ml.w(na; -joxhrnl(4kseb73 vg

  A 200-N object floats with thr8sed)2f37n3zl qowa gee-fourths of its volume beneath the surface of the water. What is the buoyant force oow 7zegdf23nl ) qs3a8n the object?

  A polar bear of mass 20c p nzc.ye/7 ul/s s705szgq4m0 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in salqe.uy 7 45ln/pgm 7z0csc/szstwater 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 the flow yzrb41/w oz+; )lmpjt rate.

  Liquid flows through a 4.0 cm diameter pipe ;ym+ twx-2hx nat 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is2;+ -nxwxymht the velocity in this restriction?

  Water flows at 12 m/s in a horizont8j 7c9 a.xc9e z)b s5uiz)nbczal 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:*x(myyc i6 : w*iuxwr drinking fountain with 300 kPa, if the fy*x*cw:rm 6 yuiiw( :xountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs 4nro c6m) 5:kwvywb:u in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate wcok ::4y w)wbu vrn56mill water flow out of the hole?

  Water flows through a horizmhv9tf;e hbrvw 0 b)r4qf(;+ aontal 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. How long would it tacc k+mj3 3-j fzro.:npke 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 of the oil is kept 6 cm above the top of the neck, and neglect any drag effectjc- 3o zfkn+m.j:3cp rs due to the upper part of the funnel.

  Suppose that the build-up of fatth ky he2(x9;nwtp1qt*y tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heth1p9h2 xnqy t;w(k* eart have to be increased to maintain a constant blood flow?

  Two narrow tubes are pln7et)rtlw:, 3a pu tws7,kd3w aced in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high 3w l t 77,en:dpwrt,atu3)s wkwill it rise in tube B?

  The surface tension of watsbcu ma++f,)g rgdi( 8er is 0.073 N/m. How high will water rise in a capillary t8+aid b)gufgr (c+,msube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsihmah ol3nc42 ieii:q+ )tn( -kus rise in a glass capillary tube withea-qihki n tc2 +lnh():m3 4io a diameter of
0.50 mm?

  A narrow tube is placed l*d qt,w+ 6eq( qtxrb4vertically in a pan 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 lowered to one-half its original value by the addition of some soap. What happens to the height of the liquid column in x 4 btq,q w6e+dr*(tqlthe tube?

  Consider a rectangular mm5om-k2gj1j6dyq2e:i f*. w zb7oe kframe of length 0.120 m and width 0.600 m with a soap film formed within its confined area. If the sdob.im:m og- zjk meq6 kj*fe2y72w15urface 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 q8u c9 afpkn8y2mk:)p built in such a way that one of the longer sides can be moved without bursting the c2auqn k8:m9p)k pf 8ysoap 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 cm square?