The three common phases o+g or civzp+dsmx1 x2a(m0ush1 s52s2f matter are

  Density is

  Substance A has a density o*0bnctmrjkrp 7,r/ ( v1pg(szf $3.0 \; g/cm^{3}$ 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 af6p- g. j3pa*zjkc7kr6n8gfx:: dtpg unit of pressure?

  Consider three drinking glasses. All 915j4ydt2hd 9dgx etc:l gn d9three 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 less water than A. Which glass has the greatest liqy 9e dg9t 2n5jgh1c4ddd 9xl:tuid pressure at the bottom?

  What is the difference between the pressures inside and outside arvkwc7iku,*(y kb/j6 tire called?

  When atmospheric pressure gxk+rkr64lp/n;hk m vi.: tl2changes, what happens to the absolute pressure at the bottom of a po rmvk/4il l n:;t.6rp+gxhkk2 ol?

  You are originally 1.0 m beneath the surface of a pool. If you dive to hf q,90fow)d - x /t dod,r1.3 jfevafa6yhv*d2.0 m beneath the surface,fjf0xhd yo, d6d*q1a- o3etvwf/ fh)v9r d.a, what happens to the absolute pressure on you?

State Pascal's princi2e-ze g2fbi 3 b/,b9 jchxzr-fple.

State Archimedes' principled9ec+n v8pf-e 4nj/a q.

  $50 \; cm^{3}$ 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 intopsw;z ;2eg y6u water of constant density, what happens to ty2;;u eg s6pzwhe buoyant force on it?

  Salt water has greater density than fresh water. A boat floats in both fresh w, )97bcuy/ xbfbccum-/tfer4u i. q.nater and in salt water. Where is the buoyant force greater on y9 i.cemtbrq/b . un,cx-f)4cuu7fb/ the boat?

  Salt water is more denserry8 v +e24h2tyr7 qcf than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displa 7v22eyqhr4fr trc8y +ced in the salt water is

  A steel ball sinks in water y1m fl9+rrb 5ca9)cg bbut floats in a pool of mercury. Where is the buoyantrlb1a+r)mcb9gf y5 c9 force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom:zkojnmw2qh/e6g(ej6qn 3 b+ of a lake, right next to a 10-kg piecjgwob(23nme +zj:6 h kqnq/6 ee of lead. Which has the greater buoyant force on it?

  A piece of iron rests on tofprfczl k+d2,j 12ljrxz+*59 kup -i jp of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in the tub?+2kr*5jprfud9l-k+xc z fj ilj1z p 2,

  A piece of wood is floating in a bathtub. A second pieceyv59vc 2vr2 px of wood sits on top of the first piece, and does not t rc2yx vv29pv5ouch 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 pipe. The diameter of the pipe at point B 2y9 kpn*;hrcl is larger than at point A. Where is the speed of the water great;p l2r*cnk y9her?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to tm(+hxm)y3zic: 8ajwsnw3* m - qlxm +twice 8 ws)tjnm3+q x(y*3 m:cmml-+ xiwzha its original radius, what is the flow speed in the wider section?

  An ideal fluid flows atw3)pmo5 slr.j 5kk:he 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is thel5r k.p:hwk5) jsm o3e flow speed in the narrower section?

State Bernoulli's prinh2mh1(-jl ly2pp r2oylg0 3qkciple.

  Which one of the following is associated with the law of conservation cvqg kh4c)-o(of energy in fluigqv(c- )4kohcds?

  As the speed of a moving fluid increases, the pressurrvj3jprm:g1+cpi*k( hj u 1,l e in the fluid

  Water flows through a pipe. The diameter of theh.8h+ mr3gpjd pipe at point B is larger than a g.phr dj8hm3+t point A. Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. pot d 2dnym) -r;t9eu(zzm6sibyo; 81 This is because

  A sky diver falls through the air at terminal veloci tq5d-uzmh*qx *h -6a 4ief8vzty. The force of air resistance on him i qtveudf68*xi 4zhm5-*azh-qs

  Two Styrofoam balls, of radii R and 2R, are released simultaneously f/e5j/ki s3tgprom a tall togi3//pkjs te 5wer. Which will reach the ground first?

  When a small spherical rock of radius r falls through water, itgw0 z4d+ bmsbzq 9c48rhdv-b. experiences a drb 9dvz8 m-cb.s+q0 zrwhg4b4d 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 o0l 27 lbufb7fhf fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities belu7fb 70blhl f2ow, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe Bepngebp 2* b3* has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same press b2ep*pn* bge3ure 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 th.(bl0 vzk*lta e same diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure differen.klt*l0(v bzace 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 "greasy" taste seemsy p/kuv*/n ct5 to be associated with oil spreading out all over the surface of tc//y5n *pv ukthe soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is pl7 0 /nygxw; nqh*yi*vjjqc44 raced in water, the water rises to a height h. If the diameter were half as gjc;gqx7*4ni0nv rqwyjy 4*h/ reat, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight thy;/im nu3f iom)fuu2( at they can run on top of water withfu (2fumn ii;) u/3moyout 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 the weight of bug B?

  Certain insects, such as the water bug, are sufficie x(agxl0jr;d1 ntly 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 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, twi gx1 ldr(xaj;0ce 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 hasqda7uo a-zwutf evqv;btm.+-24h n ;2)fs r-y a mass of 30.0 g. Wha ursa)-v; f7zt-e4 fn2wa;q.mq2+yd-ovh t ubt is its density?

  A liquid has a specifi- pj m8lc4ias7 bjb410on 1xboc gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measu 5wr u fgqqryh.5k4;d.res 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can ex w4h5fd;.g uk.y5qr rqert on a horizontal surface?

  A person weighing 900 N is st+r0w,;;yrw 0u-u a3kcz xyylnanding 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 122 f (, xmk3vj 5r v;fq8hyyo7b1ta4gyb0.0 m injft yo87hrmv3 ax42 bvq ;k5b1y(,fyg the ocean?

  A circular window of 30 c6 jefr4ztmpnj0e87x -m diameter in a submarine can withstand a maximum force ot nje pm47 e0xj-r8fz6f $5.20 \times 10^{5} \; N$. 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 pressx sz3n( ug3y1wure is 300 kPa?

  What is the gauge pressure at a locahu 64xagc cd8k3-4 s eru4i)tntion 15.0 m below the surface of sea? (The density of sen i)uu-s r4kxact ec4h36g48 dawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15m)/+dd ;kjebgk -0oce.0 m below the surface of sea? (The density of seawdo e0ckj;gk+) e/bm -dater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydroa2f94f8 7i togunur4h6dr -e fbv8 h5aulic machine. The small pistoa9 u- ue f rfbh2 4hf6odn5rg7vot488in 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 pjt;4/ xc 5pbqsmall piston has a radius of 5.0 cm and the large piston has a rap4b/ tqc ;xj5pdius 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. Wha* ,p32o8tnx kz28ciz1*f uq vsnw4 cvft force needs to be applievu 3i*cn v8 1fcfzq 8sxk4no*2t2pz,wd to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, anwbim7gos1la- af ;f1* d its large piston has a diameter of 40 cm. The 1w-s*glm aofib ;1f 7alift 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 /wwx9,hn 65el)qf4 b*.o2swaoam o e i40 N in air and 30 N in water. What is the buoyant force of thwe wh)a,f 9w xms54qeoi*naol6b/o2. e water?

  An object has a volume of zndw0k*0yhtk x+g s /b,wb;5u$4.0 \; m^{3}$ 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 whileuq 8xzmd x 0z03n7hj7l submerged in water. What is thej7z30zunh8mxxlq0 7 d tension in the string? (The specific gravity of iron is 7.86.)

  If the density of goh)tb/pjbc. 5tl -.6.w8qv 5yaqvysqhld 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 steemt(. f f,mls oqzz2-8fl submarine (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 ir6 v/p0dflb s(t is immersed in water. What is the specific gravity of the6r(vl p/sd b0f object?

  A container of water igw;,7 2zc)v -pmawjvcs placed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specifivw p;7zmcv a)c,-gj w2c 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 wit kyy:j q.9dk4u0 dard1h 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 c +;xsql;q: j 3tgw*vogud:j3wm and diameter 2.0 cm will just barely float in water. What is iwo; qg:vjwjs ;3gt*xq u3 ld+:ts mass?

  A rectangular box of negligible m ug6bdx:r 375 c4fc1h mtmv/ylass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogra 347du6/brlyvcm 5gfx1h: t mcms of mass can be 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 beneat/;6u .w/ra lwf5 gm s;q2xasfrh the surface of the water. The weight of the displaced water is 2000 N. What is the weight of the fss .5 aqlw/ 2rufrx/ mg;w6a;object?

  A solid object floats iw5hz o9*i )jbkn water with three-fourths of its volume beneath the surfacejb*zohi)95 wk . What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath t m ndw;ty) u- u*p0(dlyu/;utzhe surface of the water. Wh-d p*yu d ;uty mnu/u0l)(tzw;at is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the minb:ty7vm :bw hup -0a2simum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0 ystmab20:7 -uvw:hbp.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2weroeo6eiamt48 :/2g tw4 *)n 5sc* jf5mbepq .0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 w8qcyakuk; irya ,k,adu 52 *6m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity5 *q,ycu,wakiau8a6 yk2rk;d in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pre( s , jxhd3m5*x7vueim9viwu(ssure 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 itgw l(+ww z/o-6r rr5iq take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the puz/r5rl+g(o6 -wwwq rimp?

  A hole of radius 1.0 mm occurs in the bottom of a wat+j)+kr2 fhkci er storage tank that holds water at a depth of 15 m. At what rate will water f+kij hk) fc+2rlow out of the hole?

  Water flows through a horizontal pif ,7 af7:fjtbiw*pm9m8x.zj8)s p xc kpe 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. iq6 un;)s6 -cfohx0rl20 Pa-s. 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 of the oil is kept 6 cm above the top of the neck, and neglect any drag effects due to the upper sli 6ohr0nuc ;)f6qx-part of the funnel.

  Suppose that the build-up of fatty tissuewvwzl pkv4 -pd0,4*ic on the wall of an artery decreased the radius by 10%. By how much 4ckvp*vpi-z0,w 4 wdlwould 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 t d)xwgairikp +b,)g -0wice the diameter of tube B. If water rises 24 cm in +gk -iaxw br) )0dgi,ptube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will wateul2 a,uo9ov) er rise in a capill)loo ev2,ua9uary tube of diameter 1.2 mm?

  232

  To what height would water at 0 dcbuwt u .7hgzk 14/y-l uyp:0hegree Celsius rise in a glass capillary tube with a diamy4yhuk./l-1bu zugcph:t 7 0w eter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water r.ix(xhdg9 p5u6 t jb5.dvq 5rmises 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.9h pdgj5rm vi5(x bq.t5 d6ux soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and j9( ri-dyl a(x:1gr qewidth 0.600 m with a soap film formed within its confined area. If the surface tension o9(jx a-:yigrre( d1lqf 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 1-jgvlhfm z*gu/ b y8,52 cm and width 5 cm, and is built in such a way t*f,lz v5hjgu b/m8g -yhat 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 side so that the frame is 12 cm square?