The three common phases of maxw5 b628sg:+izc,xy /t ds/f6iht azdtter are

  Density is

  Substance A has a density q1wu4y9p)l wtof $3.0 \; g/cm^{3}$ 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 2) 83jr*9kmzqkdbos oof pressure?

  Consider three drinking gl+t8:wmn ew qh7asses. 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. Which glass has the greatest liquid pressure ah tnwe+ mw7q:8t the bottom?

  What is the difference between the :nm qp,)hdc frm*l:k.deo8x(pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the abso9zykjc a,i v+q35y cj +e,w0yglute pressure at the bottom j+z,kyea9q3c +,y g0vc5 wj yiof a pool?

  You are originally 1.0 m beneath the surface or* g (sv9u9vsmf a pool. If you dive to 2.0 m beneath thgv(r99 ms* svue surface, what happens to the absolute pressure on you?

State Pascal's princix0pntzc86*b d ple.

State Archimedes' princip shu4neej0. n8r6xnxzqy 4 .w/le.

  $50 \; cm^{3}$ 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 watyw;- e .fatzz3ok(q(z er of constant density, what happens to the buoyant force onwzqy(ka . oe;f(z-3zt it?

  Salt water has greater density t6nf1 hcxm- tsf 2dk57khan fresh water. A boat floats in both fresh water and in salt water. Where is the buoyankk6fx5cn7t-2d 1shfm t force greater on the boat?

  Salt water is more depvbg9g4y z+o0g0l pk)nse than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt bgyp0v4)k zo9 0gl +gpwater is

  A steel ball sinks in water but floats in a poo lzxf dpn;/ cw6/ -ne:0nwjis,l of mercury. Where is the buoyant force on -0ljczd/:,ns;6wwx nnf p e /ithe ball greater?

  A 10-kg piece of aluminum sits at;s5xxn+ *mae1 l lb)y*zta2uo the bottom of a lake, right next to a 10-kg piece *lam;otl ua2e n)5x1+szyb*x of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If the n4iff6x /btx +iron is removed from the wood, what happens to the water lev6xtff4 n/xi b+el in the tub?

  A piece of wood is floating in a bathtub. A seco7 ganpdu-+4tg.wr4yp g n(0zsnd piece 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 level p74.y4-w gsg(gtupa+ r zndn0 in the tub?

  Water flows through a pipe m4h0lj*opfz 8. The diameter of the pipe at point B is larger than at ml4jpzoh f80*point A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widenpn :js,fetp--yg1 - ans to twice its orifan-j-1pynsepg, :-t ginal 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 narrows to halwb1c+*k loc7bf its original radius, wh*b17wbc+okl c at is the flow speed in the narrower section?

State Bernoulli's princiy, x pxw )gjhp/y9q;h d1zz*n7ple.

  Which one of the following is associated with the law of conserg5a agbpt- krmd. 17e k:,c.ervation of energy in :b5 mkcekr,7-ra.dgeg1ta.pfluids?

  As the speed of a moving fluid increases, the pressure in /rrt9g fse-j+ the fluid

  Water flows through a pipe. The diameter12v h3 g0.tnhkvsl e;c of the pipe at point B is larger than at point A. Where is thelkt v.;cvesh 1nh30 2g water pressure greatest?

  When you blow some air above a paper strip, the paper rise784 :mj howrrls. This is because

  A sky diver falls through the air at terminal velocity. The force l)5- zj5lenh cof air resist ce)l- hlzj5n5ance on him is

  Two Styrofoam balls, of radii R andhif p5vqcg,mt. i( i:os2+ q5o 2R, are released simultaneously from a tall tower. Which willqg2c+.ov5(ipifs:q iomht5 , reach the ground first?

  When a small spherical rock of radius r falls through wa5, klaeclr*9r ;-ytoqez/ x*ater, it experiences a drar o*rz5llcax kae-9/ e ,;tq*yg 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 +)1 q ,vszpwo)stbevr-50dvfg0kp2g through a narrow pipe? That is, if yg 21dv0 0vqkz,))rofet v+bwsg-p5spou 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 same length, but fbb-t/ ihqq(0p ox(6m pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure diqiobm(bht fq/xp6(- 0 fference 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 same diameter, but pipe B is twice as long as mwy4dn2i 8 pm9pipe 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, what is the flow ymm9i82w4d nprate in pipe A?

  When soup gets cold, it often tastes8u 1)+vzo wnq9yvt-cj greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. cv89 o w n+1jz-yquvt) To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rise*gd+ fowi b:qxm*ryxx k7+spw,o: 5b: s to a height h. If the diameter were half as great, how high woul,+ +rkpwbx i:5 s:*b*mfgq : yxd7wooxd the water rise?

  Certain insects, such as the water bug, are sufficient/vy :e 8/.jxsy cux8bvly 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 twicbv:sx j.uc8 y/vy/ex8 e as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that they cmob5f1/x. d ynan 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/5 ydon1m. xfb 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 cm has a massa2zurj, 95kaa of 30.0 g. What is its density?zkr2u,9 a5a aj

  A liquid has a specific gr3ui9nlm p9h ,davity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x bdb,fi26do vjbd 67 ;m4.00 cm. What is the maximum pressure it can exert on a h ; 2bi6dmd76vo bb,dfjorizontal surface?

  A person weighing 900 N is standing on snow ikl48gkty3zfsahd o(jg)f(a/3fh3o of, 6/lshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (abi;hh1: zkzo9o/ fv3cb solute) must a submarine withstand at a depth of 120.0 m in theo 1iz:z/3o hf;9hcvbk ocean?

  A circular window of 3dkfn +i wt:8+k1njwdvk ;)l r:0 cm diameter in a submarine can withstand a maximum force of k lr:fv)+nk; kw+ jin:8 dt1dw$5.20 \times 10^{5} \; N$. 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 pressure v9sxv,j/v iz (xeyoe( 2y5o01ggy mw9is 300 kPa?

  What is the gauge pressure at07 zng9jq ,b+d t(gz+cad;w or a location 15.0 m below the surface of sea? (The density of seawater 7wajgrq9 tg+d0;c(+znd,boz is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute presw sai900 ey mb:r2ird-sure at a location 15.0 m below the surface of sea? (The des0-92:w bi rira0 myednsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraxlqwkp +0)ks 3wpl ,z0ulic machine. The small piston has area sqllp+p30 ,xkk)ww 0z$2.0 \; cm^{2}$. 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.-i/hjnr t5f,d0 cm and the large piston has a radius of 15 cm. What force must be appliedrnt,jhd f 5/-i 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 diamet ( tguv.nz8mc 7+m8vlzer hydraulic piston. What forclv 8mzzg cm+(8v.u7t ne needs to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its largg8ez,e2cmi o46f3 0xysab)hq e piston has a diameter of 40 cm. The lift raiseogihm,f2bq4z0x8y 6 eesa)3 cs 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 w 7j raalh *om-wmern6v*50f u8ater. What is the buoyant force of the wa-*rve j m 6mao0 aw8ln57u*rhfter?

  An object has a volume ooz o.0s7fti9 df $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid irooyvh1zgun+ 4 0n is supported by a string while submerged in water. What is the tension in the string? (The specific gravity o+vghuon0 zy 14f iron is 7.86.)

  If the density of gold i1 y8owwo mkz;3s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density = ksor58bl-f*x *b;mr ) bc7fuk$7.8 \times 10^3 \; kg/m^{3}$) 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 eq7 l.-)n9z p92bk4xot-,twxwn ul nxwhen it is immersed in water. What is the specific gravity of9w u-teqz-2xnn l o 7x,wtpl)n4bkx. 9 the object?

  A container of water is placed on a k 0t suqjj ):x /jdo+-oitho)h,xup76scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a 0,xk) 6tt:/h)jjis+xhq7 p oudj-o u othread 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 m*a(n lyl8s-6/re fwf 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 just barely r5 zm n5r(*bmopb-o2f float in water. W rbmmf5z5ro*(2po -n bhat is its mass?

  A rectangular box of )e/fd5k hst1f negligible mass 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 ss/ekf51 td)hf inks 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. The we qrg7zu*/d y l a73;iig:ww*zdt,.y qhight of the displaced;wg 7u d,ga.7q:yt*z 3hiqy d/ilwz*r water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fp.1rlsa 8zq8 1o-ea/hw uswcca.9n)s ourths of its volume beneath the surfac9zc asp qlae8/c.n .-sa8wwou1sr)h1e. What is the object's density?

  A 200-N object floats with three-fourths of its volume y w8qeudq,).kbeneath the surface of the water. What is8, .qwyq )kdue the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ik:yc,d ;xv y -ixp 0t6kb+wz6d 5skgk*ce floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific grw0*:+kizpdtx-5bv sy;6,x gdk6 kkc yavity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Fil)p)h29x/)gkks *v brcx( gix nd the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cg4p)/meg9kb 8xt yp6p m diame4tp emk8)pxp g/9 g6byter restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with apt9/huqo y a o0 if6b .7qx61wa/(atgk 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 51+zk 9ieur wba pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above theer+5uizk 1w b9 pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storag nsg)fk/jt v(y;8 gj:fanro3v b;7gm3 e tank that holds a(3;n g7jf8 br)tm :/ svv; fgonjgk3ywater at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional areap 50ryoq6 eti6f,m yo4wd gf74 $10.0 \; cm^{2}$ 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 gu gla8rv2,d+*k fj0b 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 rvg ,ku82 l*dbajg +0fneck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of faeo y9tgbm6fl zr)hc 607 m/9citty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to bem9)76obeycz9l rg/6tchi f m0 increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameter o0h1 l wtzy/o,of tube B. If water rises 24 cm in tuwhty, o/lz 01obe A, how high will it rise in tube B?

  The surface tension of water is 0.073 -wgwo.iqn7-9,e jnpsa 2 qws8 N/m. How high will water rise in a capillary tube of diame iwq n-w-q8a,sjegw .7n s9po2ter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in9,q-u0e y.kr afg(s ve a glass capillary tube with a diamet0.a(uryg9 sef -v, eqker of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, abum a3tuwo j4hd/2s) mu6 +0bgnd the water rises in the tube touu0 )+tbabmdswo3g6 / j m4u2h 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 *k pmhb4av02tp:5jcwframe of length 0.120 m and width 0.600 m with a soap film formed within its confinec2bh5p kpa:4 j0vt*mwd area. If the surface 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 widtz,fzse) l bm*n7dr5a3 h 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,fz5 7 nrm)l3basedz* the adjustable long side so that the frame is 12 cm square?