The three common phases o+oouf 0b ,wecq )ow;1 zsihd :8k/ldv1f matter are

  Density is

  Substance A has a density hs hza5 )0v.saof $3.0 \; g/cm^{3}$ 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 unioj pcm8+m 3rxh3o o5+zt of pressure?

  Consider three drinking glasses. All three have the same area base,dyo vr -jy23+x 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 yvx2ry3dj-+o 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 press6)9d9 lqzo4jeg ,0kmzk 4 bfysures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressur0py d*max*z/(;f7p o juoilj3e at the xo37(jj*a;ipldf*z 0op /uy mbottom of a pool?

  You are originally 1.0 m beneath the surfacekxre7asr.l 1 *, qag4z of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolzle r, g1sr47.*qaxkaute pressure on you?

State Pascal's principlemd3 (hpaqt7u*8lq:x n .

State Archimedes' prin96v-my(ek: rkqd9vw q ciple.

  $50 \; cm^{3}$ 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 ug/rab k:0k f:density, what happens to the buoyab 0kgrkaf /:u:nt force on it?

  Salt water has greater density than fresh water. bk x *xf7+xd)eA boat floats in both fresh water and in salt water. Whdx k)e+7fxx*bere is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floue i5z:ehz51 4gmww s)ats in both fresh water and salt water. Compared to the freshwiz4z) esum5 1:g whe5 water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury0jd, te0 l jl3j)cf4 j9qiwcn3. Where is the buoyant force on the ball0q3lc0c t 9)wjj jjd43ef n,li greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next t k0gec2 jsr.:po a 10-kg piece of lead. ks gje:0cp2r. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a rvadl dn ++gif3ld k*p p)(6(wbathtub. If the iron is removed from the wood, what happens to tf6pk l3+ d)+i *(lrd(w agnvdphe water level in the tub?

  A piece of wood is floating in a bathtub. A seczd.7jfa- rhr70g,na t- bhe/7j kml9p ond piece of wood sits on top of the first piece, and does not to bfhtr l7jm- ,dhjk-79g /z7a0p.enr auch 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 pk e g0wyc3gz5gk37f 3oipe. The diameter of the pipe at point B is larger than at point g33kfg yzkgw073 o ec5A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horh.k:: ln9bp)l8vhgq kf;i4*h ex/(qzvj rg*h izontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider sectiok;hg/ 8e **gxvj:h qrfqilk):pbhnh 9 (vz4 l.n?

  An ideal fluid flows at 12 m/s 5bk6 v8e 4aivjin a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower secae ij48b6v5v ktion?

State Bernoulli's principlebk;n 9k piyx7g60y.3fqj n+ww.

  Which one of the following is associated with.kj t.xdjq4 n.+5 alda the law of conservation of energy in fl5klj a. 4qdtn+ jda..xuids?

  As the speed of a moving fluid increanyt ouq )x0h40ses, the pressure in the fluid

  Water flows through a pipe. The diameter of thj1k5fe sb+ix+ e pipe at point B is larger than at point A. Where ie+i1sbfk+j x5 s the water pressure greatest?

  When you blow some air above a paper strip, the pape1ph,9xyfu7o1(khab y r rises. This is because

  A sky diver falls through the ai l:h5 zhlyqm( e*3lxa+a3 j/hnr at terminal velocity. The force of air resistance on hiljxqnml(hy*h /h:33ze a+ la5m is

  Two Styrofoam balls, of radii R and 2R, are r.0e: d0vcgw uoeleased simultaneously from a tall tower. Which will reach the ground firs .u 0:cdeowgv0t?

  When a small spherical rock of radius r falls through waobric73/ wp tpa c+c49ay j :11ysg2pzter, it experiences a drag force +ib w7t1p4r9/ycjao c a2ypg:3z p s1c$F=arv$, 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 through a narrow pipe? That g48brj65b rugis, if yug8j6 r4grb b5ou made a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes aredfqf(1ll :bw(q(jjem m 0+91mx: lvcg the same 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 lengthsjmqv:lg((1 bd( j9l: xqf me10lwcfm+ 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 diamet4h0p dpo4+br - .bcnxner, 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 lengths of the pipes. If the flow rate in pipe B is Q,x b4p po.+c04 rndhb-n what is the flow rate in pipe A?

  When soup gets cold, it often tastesjz b3lq z.sv a;qejy;yd21j -i8a1; bx greasy. This "greasy" taste seems to be associated wiy1bz3e ;x1;;l8j vydj.-sjqaq2az b ith oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diametegesasq)k)-bz0uku : 7 r d is placed in water, the water rises to a height h. If the diameter were half as great, how high would the water rise:) gs)-ba0uskkzeu 7q?

  Certain insects, such as the water bug, are sufficiently lightweight that (fiis4:aatbe db9,1c they can run on top of water without breaking the surface tension. Water bug , aab4di1es:ti9f(cb 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 sufficiently ligg mqin(s8 hqmwfx,::o4 ;7 pzchtweight 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 the bug's feet. Suppose that the maximum possible upward force on the feet of w hxmi g s87fwn m,o(:qc;:zp4qater 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 x/n zsc7uxi: :x7qq:qcm has a mass of 30.0 g. What is its den/7u qxxq7isz: n cq:x:sity?

  A liquid has a specific grsf:cmuo (;a+a nwls82avity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.csfic p8kg( mc,a+kf; , h4aqs ws,(o20 cm x 4.00 cm. What is the maximum pressuresaci+s c fk g,,cmh;,42( waofskpq8( it can exert on a horizontal surface?

  A person weighing 900 N is standing on snows9*en(3xl (xvprm e ms7hoes. 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 d(9gf5epl-r x of 120.0 m in the ocr eflx(- d59gpean?

  A circular window of 30 cm diameter in a submarine can withstand a maxim 0s:xor9ygp/ p0sb zhw9gh-k+j+ lxo-um force of -9zx+ plsyhksw9gbxoh /-: gj+opr 00$5.20 \times 10^{5} \; N$. 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 h7 2* iu5y inkgr .1u-*;vilfah4qthg pressure is 300 kPa?

  What is the gauge pressuh(bdm *9phgw 8re at a location 15.0 m below the surface of sea? (The density w mghp98h(b *dof seawater 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? okqj p62;cmf( .oi u-p(Th o f ouc;(p2-qikmjp.6e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston obk lmobz;5zp4co1w9dooz- b ) aip393f a hydraulic machine. The small piston hasoz 1obkpbo9 cz-3l 4pm39)w oz;dai5b 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 cm and th4qm pu;60h/upq c dn/ t8leu4he large piston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car q4 p8;h dpmqtn0u l64hce/ /uuweighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulqd 0m);e liagbbj uopu/7w)/6ic piston. What force n)p;gw u7i d /lb06je obm/uqa)eeds to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diamw8 asj; ggputzl7 ()yt5 c7)yoeter of 8.0 cm, and its large piston has a diameter tg ys7uwjt)87oapc( z;g5l) yof 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 Nq9qb ra1b)ai) h2n3- hw+ vuxs in air and 30 N in water. What is the buoyant force of the wat )bua )hwx2vsrhb13 9nai-q+qer?

  An object has a volume)j :th v:dxkglt :p.w7 of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of srz2kj :ez( milf,y/i/suj .h3olid iron is supported by a string while submerged in water./:3m,jj ykefir( huzl.i/2sz What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of go(e+huo 8a tl w,3ik,4p6lisqsv2+rzj ld 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, hk(cf*a4grj 021zicu tfz-s -txs6h (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 air and 6.86 N when it is izz ra(6 tc4h;ymmersed in watezray; t6 (h4czr. What is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reu frp r(srhg(nbuzk(v.-;+or a d+44eads 120 g. Now a 20-g piece of copper (specif;r(+fo(d(rshg4v-ne +.rzk4 a u bpru ic 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 mass of 1.0 kg and dentlynofb6l/n rvw82 p1 2 txqj:0t;2 egsity 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 hzgh* h(;wb ez;.c je42.0 cm will just barely float in water. What is itsw4;je;hb.ezhc*zg (h mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m; 3ekwqx.vzca5;or2f7azy3 6jm0fj v high. How many kilograms of mass can be loaded onto the bo3z;6a20j 5 x vfvkrm qo7ajwe.fyc3;zx 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 watend)x4z ,rk1b, +jdnj1v+k zzn r. The weight of the displaced water is 2000 N. What i1z z,1 b)nrj zjx4,d kk+dvnn+s the weight of the object?

  A solid object floats in5sg p9f 9cx7jl water with three-fourths of its volume beneath the surface. What is the pjsg5c 997x flobject's density?

  A 200-N object floats with three-fou4aw0 9xg+knnyk fq9c k-y)x)xrths of its volume beneath the surface of the wate- xkng) 99 k)yk4xc0nwxa +qfyr. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. Whbtv(fti-l 1 9ouo6y:hat is the minimum area of the floe that will just 61thilobfuv o-(: yt9 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 2.zzwa s +krxs2xz. w140 ly:t9y0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipk ,si9n l;h(.y2m n )*is7ifmrwi ,zqpe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. z;mi)ii7nmyis lr,*q.kf ,n 9hp( s2w What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressure of6fk8yw 37.8aw q51ckuv bxnse $3.0 \times 10^4 \; N/m^2$. 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 7 vk 50e;,cp9pul tvota drinking fountain with 300 kPa, if the fountain is 30.0 l v5t97t,cvppu0 ;koem above the pump?

  A hole of radius 1.0csajxua a4t4 r 7ygjd0w*v (/: mm occurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of atadxv70: jr*j(y/s a 4wc4guthe hole?

  Water flows through a horizontal pipe of cross-sectionidan0b6gr msdy4 5v;7al 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 ezbm1ml+ *uz,gqu+i*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 of the oil is kept 6 cm above the top of the neck, and neglect any drag effects due to the upperlm1uei+* ,q+ zbg*z um part of the funnel.

  Suppose that the build-uc31zyfg o2i(xz)) nmup of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would thi 1uzmgx)2o z yf)3(cne pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed tdmzk wi+) /h/in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high hw/d/+ tiz) mkwill it rise in tube B?

  The surface tension of water is 0.073 N/m. xq5*p)5ln krjw59bdhjbv39o a 77uc6 2nqeqaHow high will water rise in a capillary tube *j r 79blaqp dqx9en)w qk3v5n52bc huao 75j6of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tz(sm7. .o 6t ( ).kjqmqno y8sut;ntsdube with a diztsnt. o(qnu oytqj k8m.7sm;6 .(ds) ameter of
0.50 mm?

  A narrow tube is placed veyr bh5l+c9y . (syfzm)rtically in a pan of water, and the water rises in they)y(f s59c+hzl.b y rm 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 the tube?

  Consider a rectangular frame of lea+ (sp+l8(wsxk3wg tmngth 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is (wgtap +(x ks+s3wl 8m0.0260 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;bg p66ze d*ry3r ou/.bp/lr1t iw 7+6cwkgf x 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. 66kc1r/xtwgd urb . ;izw/f 7ppb3*6y +lr oge How much work is required to move the adjustable long side so that the frame is 12 cm square?