The three common phases o00pt hts*5pzuf matter are

  Density is

  Substance A has a denslzkg/h z lw9bku6 d4-79y(ig pgs.-amity 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 ujr7l9 ;.hxu e7m8 m, krszlm9br bq.7unit of pressure?

  Consider three drinking glass a r,bx0e2id9zes. All 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 less water than A. Wi92xdae,zb0 r hich glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outside aoep 6-- ww4uu4h .,rcd tum2e4t7 qz(nqf.qmz tire called?

  When atmospheric pressure changes, what happuz g,-5dtca gtf(7e 0n:gv 6eaens to the absolute pressure at the bottom of a poo 6ng:a5-cvtu7egf (0 ge,az dtl?

  You are originally 1.0 m b6s3rrr+:x q ceeneath the surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the abso3s :qec x6rr+rlute pressure on you?

State Pascal's princib3qvodo 8qd +6of,-x7o zcmn(ple.

State Archimedes' principl9l z, xs/0hjfvza5bql+. g -vbe.

  $50 \; cm^{3}$ 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 ,s-a pn f66iunand deeper into water of constant density, what happens to the buoya nf6p-uain6 ,snt force on it?

  Salt water has greater density than fresh water. A boat floats in (updc)om7. yk; n (jm2gay 0icboth fresh water and in salt water. Where is the(mc( ydm uc7ijp ak0.2n;y og) buoyant force greater on the boat?

  Salt water is more dense than fresh water. f y/- .my0qjcpA ship floats in both fresh water and salt water. Compared to the fresh water, the vol jpm.0cf/y-yqume of water displaced in the salt water is

  A steel ball sinks in water b, q 47byfwc3mms(+ p99btq jrput floats in a pool of mercury. Where is the buoyant force on the ball greab73c sy4tf pj9b,pq qw(m+mr9ter?

  A 10-kg piece of aluminum sit7wab3u 3p- )0ede z 7h;kpypshs at the bottom of a lake, right next to a 10-kg piece of lead. Whwbsk )y-p7a3e zeu0hhd 7pp;3ich has the greater buoyant force on it?

  A piece of iron restzf9duae58)rnrq9 ivpp+go5ajz 9 l)- s on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level+q)pn-98i 9z5 zd5loufg vajarr)9ep in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood s. ay.mom5da:wnkz (fxuew2/+ its on top of the first piece, and does not touch the water. If the top piece i ko(f 2a+xw:wuam . m/n5dy.zes 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,sjjbr;i,+tq)e cbs 6 B is larger than at point A.)b ;b,rqs +jjt eci,6s Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Igeth139)vwq6 twzmlqe (tv 08f the pipe widens to twice its original radius, what is the e3gq0t8vmq6wttv9 ( elh z1w)flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to halfnj2 7q3mpq4z4 4i8hi5x ocisx it2si3c8i4 75zni p h x4oxmqjq4s original radius, what is the flow speed in the narrower section?

State Bernoulli's principl n4 8t1 )kz2bigclo1rle.

  Which one of the following is associated with the t60js:.;ekdqqp*yqwd l8g 6e law of conservation of energy inlsqdjyt:ew6gk.* 6 e pqq0;8 d fluids?

  As the speed of a moving fluna yqu4k4+xdxz+7u9erw (ob 7id increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at4ul.h q1qd+u( l8c uqw point B is larger than at point A. Where(uqc+ w. d4qh8ulu1ql is the water pressure greatest?

  When you blow some air above a pap:0vpl /zn9 f +nzw;vz affcl*;er strip, the paper rises. This is because

  A sky diver falls through the air 7oc :n8f) 8a/z5;mlsk6y+ewm kb pffw at terminal velocity. The force of air resistance fk;mn5yw8w o msa 8pl) +:e6zc b/7ffkon him is

  Two Styrofoam balls, of radir 3.knfevgig ; o2f1t1i R and 2R, are released simultaneously from a tall tower. Which will reacht fo f31ikg e2g.1;rvn the ground first?

  When a small spherical rock of radi+q,eostl )s5rbc,8yi5w rrphk)j 9;ius r falls through water, it experiences a dragw,5 8 s5e)h k; 9ir,pqjb+oyctsrri)l 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 flo+k; ci-tg9zk )lpug i:w of fluid through a narrow pipe? That is, if you made a 10% change in e +9pi:k -gl;uickz)gt ach of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length,ytlpvb 6-2/ ch but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure differe/bpcl -yv26ht nce 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 thec 3 :f7zr al5)xnekk8e same diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acrosee kclz:x87 )r3n5fkas 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 seems to be iqf3- u3a5-fjc gfa1cassociated with oil spreading out all over the surface q5 c -g3 fca1iuajff3-of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d jfz w.h;z b)ayu0kp,5 is placed in water, the water rises to a height h. If the diame5zak h;0 ub, fpwz.jy)ter were half as great, how high would the water rise?

  Certain insects, such as the water bugj zgf-9 *w4iysr1 0je*fout4r, are sufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. z 4ju-9rrwt1* fj i *gyf40seoWater 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, go ;il+jwt.e9are sufficiently lightweight that they can run on top of water without breaking the surface tension. This isjgo t.w;ei9+ l 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 dimensions 2.00 cm x 3.0t 9m8 rdokaz7 zk*0x2b0 cm x 4.00 cm has a mass of 30.0 g. Wh t0x2bkrmo7 z ad*8k9zat is its density?

  A liquid has a specific gravi p1m811.bzaypb6i3dv g thi7lko a/b-ty of 0.357. What is its density?

  A brick weighs 50.0 N, and measuretnp03hk . nx +r wy6d,q/ivuc,q6+utcs 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exn6 r tni,pqxwyq/3t,ccuu06v dh+k+ . ert on a horizontal surface?

  A person weighing 900 N is standijg a.a/csct, 1 wf0 ahdc4o9m*;4 swg6zznx)kng 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 120.0 ma;c; 2znh/ xpi1ux.tc in the oce.;xcnp ;a1/uhtxczi 2an?

  A circular window of 30 cm diameter in a sub*nx c2tdle;u,marine can withstand a maximum force;cl* untx e,d2 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 thhe.e sfpc;s s6dz+zz9.nu /0s e absolute pressure is 300 kPa?

  What is the gauge pressurej /iur:t*cba 2 at a location 15.0 m below the surface of sea? (The density of seawa:2*t uab c/jirter is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressureetw,j io +e3ljp4 ,8bt j8a0gr at a location 15.0 m below the surface of sea? (The density of seawater it 08it,gbj weeo8, 43a pl+jjrs $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hyn/ze5x u b xw08k89hwrdraulic machine. The small piston x0kh/w b 589xen8w rzuhas 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 g7xw lzc- +xc6radius of 5.0 cm and the large pistog-wx + 6zl7ccxn 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 bevmj (zpg(u5bf 50 ,zuh lifted by a 25 cm diameter hydraulic piston. What force needs to p uvz(bjuz 0(fg55 hm,be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a. 00gbl ecdx.a hydraulic lift has a diameter of 8.0 cm, and its large piston d.el0 ac.b0g xhas a diameter 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 4e4v)tafi4 l t/)0br;tk y i5jg0 N in air and 30 N in water. What is the buoyant force of thej/)tb5tlfva;)4t reyi 4 k0gi water?

  An object has a volume sc/26oe8 zgjcof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a emouxj1bc/ h:,tafld wjnl; 4:z cb:*/ xpm1* string while submerged in water. What is the tension in the string? (The specific gravity of iru * :b*ftl1jo;,xzhjm axmc wp ed/b:/1:l nc4on is 7.86.)

  If the density of gol8miq hanl6:5u d 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 nvwa 86f +erd)(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 fy pl dsb3/ dkd3e8yeu/8s *8jis in air and 6.86 N when it is immersed in water. Whatf 8des3j dy*byk pd/su8/83el is the specific gravity of the object?

  A container of water is placed on a scale, and the sg9zcmrj4 f30pcale reads 120 g. Now a 20-g piece of copper (specific grav94r z0j cf3mpgity = 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 aniq 7ikl9 n.xc6d 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 leng5rwi r/d35e-hvizw71qc avj: th 12 cm and diameter 2.0 cm will just barely float in water. What is iti1q:wjrw75evd cz v-ri/35ha s mass?

  A rectangular box of negligiblgqv tb 8r1v* qp1yil 0/i+;ykmlu)gf-+u:bewe mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loadedb 81w)tu rei1fy+ qq ;lyl bi+/-v:mp*0gvguk 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 2q:svn(wyaiu 8,*qd xthe surface of the water. The weight of the displaced water is 2000 N. What is u,q2*xsqv:w(d yi 8 anthe weight of the object?

  A solid object floats in water with three-fourths of i *u poxj)iol) am3l14cts volume beneath the surface. What is the *)cu am4 o )jlpilo1x3object's density?

  A 200-N object floats with three-fourths of gfzhmvek.ssl n25*k8f7 sk.chgp 135 its volume beneath the surface of the water. l2g*p8 .53f7vhczfsgms .5 hns1kkkeWhat is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 1tfef2e p mylv1:/5ed300 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of spe3e: f 2e efpydtml51v/cific 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 tynnp3cv8q 38(hbsm3u lt;x) y he flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/ b nhglt91-4xb;c)ds; i0o mfes. There is a 2.0 cm diameter restriction in the line. What is the velocity i)-bb4d1l cm ;9t;fx e0hognsin this restriction?

  Water flows at 12 m/s in a horizontal pipe with a preu) 1a p1)kazq/ d* mxsucakk(-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 it take for a pump to supply a 0re.z wmmqy7p7nc56 h ik- (csdrinking fountain with 300 kPa, if the foi5- r0mkq mz(pne7.hys 6wcc7untain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water stor nztp 3bne,d1/age tank that holds epz, nd/b n1t3water at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cro+94nt2oi t;nvup)f z xss-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: : a )4-ll xbcp9fwym(f9xv79facfhl 0.20 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 partl :x4: f9a(9lp)m9lw7fyabvhf-c fxc of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an asel wautl,w v4 ;.)d+yhm2,r nrtery decreased the radius by 10%. By how much would the pressure provided by the heart have to be4tnr2).dhmluvaww; y+,, e sl increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water.2ub(pemhk 14dv l9v1y Tube A has twice the diameter of tube B. If water rises 24 cm in tube A,lvy 1udvbhe41p29 km( how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a cap-8hlt4 fvraw, - 5rrrfillary tube of diameter,rfv85arrtw 4l--hf r 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glatf68(ydur9mqvqhyoq1 4 h8; ass capillary tube with a diameter ofr 9hvh6t 8 mo;y8y1dqf (q4qua
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water ri l8qk)wzrni :*ses in the tube to 4.0 cm above the level of the pan. The surface tension in the liqui k8wlqr*)n: zid 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 frauiz(kax7la6 s c5;f.)pnqnz 5me of length 0.120 m and width 0.600 m with a soap film formed within its confined area. If the sqpsf . a5zka7(zxuln ic6n);5urface 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 widtmn,u2jw8db s 5 (l /mbncbu2r8h 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 tension 0.026 N/m. How much work is required to move the adjustable long side so thms( d,228mb8/ nrn jucl5bub wat the frame is 12 cm square?