The three common phases of mattevyb/6sfj pn b41+peg/ r are

  Density is

  Substance A has a density ouka,r9w5n ybc+rwo2, f $3.0 \; g/cm^{3}$ 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 pressure?i)foahv i y66-+h3xknt: iq5b

  Consider three drinking glasses. All three have the same area base, ww7w2ilz:ydbp2lx ;pz) k 0d6and all three are filled to the same depth with water. Gld6i)w2k y l0xw;2bz ld7p:wzpass 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 at the bottom?

  What is the difference between tce ch(*(bs 075j6f l )pwbykuehe pressures inside and outside a tire called?

  When atmospheric pressure cw6m92b+ q uszmhanges, what happens to the absolute pressure at the bottom of a pool?z62 b u9qsmwm+

  You are originally 1.0 m beneath the surface of a pool. If you di;e-t (dep rgr,ve to 2.0 m beneath the -,etp(g; rrdesurface, what happens to the absolute pressure on you?

State Pascal's principle-y7o g5nl k8bou hq+zh -bq s(l,du;m4.

State Archimedes' principverja/e(0k1f crn*5x f6 k5js 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 water opl7 (hwkx/jt3ag m0d44t 6fwz f constant density, what happens to (ztd4 tg/3j7lapw6kh0wx mf4 the buoyant force on it?

  Salt water has greater density tha0h*f:uib x tfln i6ky)8 br8 losli.8:n fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater o*lr 8utxi:li:.f6 lfbn)k b88 os yh0in the boat?

  Salt water is more dense than fren7 cg4/r mi4+;yi5nnstqc g;j sh water. A ship floats in both fresh water and salt water. Compared to the fre+; sirm q7cjit;nngn5 c44g/ysh water, the volume of water displaced in the salt water is

  A steel ball sinks in wasle 3u-k-vor ju0f8d/ter but floats in a pool of mercury. Where is the buoyant force on the ball glou0f 8svd--e3 ur jk/reater?

  A 10-kg piece of alumi-ncd 9/taix 4 ifvgn9v wd.i/+num sits at the bottom of a lake, right next to a 10-kg piece of lead. Which has fat9.n gx //iv i-in49+dvwc dthe greater buoyant force on it?

  A piece of iron rests on top of a piece of wood fbv(hk,n1.uwmnd-8 sc loating in a bathtub. If the iron is removed from the wood, whatvm 1,. h(8wsncb dun-k happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A ikc lk;mva e/k38w j72qq.1e csecond piece of wood sits on top of the first piece, and does not touch the water. If the top pc;e31aql /k8 .m2evcwij7q k kiece 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 is lbmg;fseleu4 ag4a33/tkv+; sarger than at point A. Where is the speed of4 egv;gtaka3ml43e f; /ubs+s the water greater?

  An ideal fluid flows at 12 m/s in a horizonwwaso4b e-cj45 rfs8 4tal pipe. If the pipe widens to twice its original r48 rcs4as bjww-5f4oeadius, what is the flow speed in the wider section?

  An ideal fluid flows at 15xm./bmddkr swx-v r v5/b ;1a2 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrr;r5mm5 1db.w-kxv sadbvx/ /ower section?

State Bernoulli's prilrj d10zs 2upt:cik (br v;k30nciple.

  Which one of the following is associated wilv0hh a4ph:7r os-5ioth the law of conservation of energy in f-50 a:7hphlo io s4hvrluids?

  As the speed of a moving fluid increases, the pressureo c /vz,;mnr0y* ctuv- in the fluid

  Water flows through a pipe. The diameter of the pipe at point B wr0m nrv, mysmc24;6 h+yy5kf is larger than at point A. Where is the waterhfsvyr+my ;km0 ,y nm2456rcw pressure greatest?

  When you blow some air above a paper strip, the o 3h68snbj0i02vblo6tnx e1*zz(l so paper rises. This is because

  A sky diver falls through the air at termi hxvx)g6f(fy.n*l lj gp ,t:)pnal velocity. The force of air resistance on him isph v,gxpl.t*:y( 6flgx)nj)f

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a teh-oss8uwx eu/f90f 5all tower. Which will reach the groundo8s shu0fef59 eu/x -w first?

  When a small spherical rock of radius r falls thro4z, i qyfaa5.rugh water, it experiences a dr.q arf5,a4yi zag 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 effectkggoc 8-o9x9. 3juscd on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the g3kxgsu o.9gocj -8c9dreatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diamete4xstr7 e49n eph x 6hjm1p:1djr of pipe A. Water undergoes viscous flow in both pipes, subject to the 7 r4j1h 6 tjs:exn9 dxhe14ppmsame pressure 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 sacn7e0llev1 * 6 2y)ar5cnao tqme diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure2a elt*yc ar0c n71 oeq6)nlv5 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 ofteg4 qa6dx8hs g0tx,g4 u;f -thin tastes 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. To us "physiku -8dg ,40x4;fx6sq hhgttagi ers", this is readily explained in terms of

  When a tube of diametec j4iq27wa-6eitfoo5dxha b 6a1 1; ogr d is placed in water, the water rises to a height h. If the diameter7q61e ;afah ogtb2iwd 6io-o5x 4cja1 were half as great, how high would the water rise?

  Certain insects, such as the water bug, are 14 (uu2xhtzjqsufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Wa1u4 zu(htqxj2ter 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 lign3bco., ch( tghtweight 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, twice as wide, etc. W (3n ,othcgb.chat is the maximum upward force on the feet of bug B?

  A plastic block of dimensions ozdon( ho2is ).n*nq02.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is s)n(d o*i .20 nnqoohzits density?

  A liquid has a specifdmaz;*flpp:;o n l*y: ic gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What i4+ hfggh*)3zz:lo(qych t ,vds the maximum pressure it qvocz ,zl+*g4hg():df htyh3can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowsh- qenyj6xi*0kp:rk/y oe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 10a 7o;:m,:fxrw djz dd20.0 m in the o dmz fr:0wdxjo;7,a:dcean?

  A circular window of 30 cm diam 7vz/oty :eqts99r jz+eter in a submarine can withstand a maximum force:zq97te zsoyj+ t v9r/ 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 absolu/xi9 qxuqb73 xte pressure is 300 kPa?

  What is the gauge pressure at a location 15e89, srm 3w7 l(ezaz+ag vq;bchdk w8:.0 m below the surface of sea? (The density of seawatez k( w v8aalr ;9e+ :hbd,qcwze83g7smr is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sealem :r / k+gwdh3m)y7j? (The densekl y)/3hgm 7djmr+:wity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the skl8 6r6ta0wn,w q nwc)x fis45li./su mall piston of a hydraulic machine. The small piston has areacs.kwrtxi ns 6wuli 4,8)qf 5l6a/w0 n $2.0 \; cm^{2}$. 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 ofa .b5kte jrc9w(9*q/ts9lq tf 5.0 cm and the large piston 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 pt(tqs .wj*b ecfk/a5 l9 tr99qiston?

  A 13,000 N vehicle is to be icy o.:+gi j sh ;rxat7m9z6pi20r,on lifted by a 25 cm diameter hydraulic piston. What force neer76om; jh 9c.o s:gyzr0ii+atn x2 ,pids to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift hay u 4.yl8ckcxts9*m+r s a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises au y st*89m4lyx.rckc+ 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 f vrb+s6*fx4 7nd ztj/N in water. What is the buoyant force of thfs jx*f7n/d6v+tzr b4e water?

  An object has a volume ,eyq-bytpy48m .1 t)d njj 3ocof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of sol7lq.,+cnb uxy id iron is supported by a string while submerged in water. What is the tension in the string? (The specific gravit, yulx7+b. cqny of iron is 7.86.)

  If the density of gol,x opw xqlfdruv,dzcg03 (jg-0i+y .)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 (density = a s kj/luwm9h,r*o/2g n81 *f fz;btyc$7.8 \times 10^3 \; kg/m^{3}$) 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 immersngls:ge4s qc-b ,w75t, hlx /zed in water. What is the spg h4/tlw,q l gcse7b-nz:,s5xecific gravity of the object?

  A container of water is placed on a scalej )2j- 0gp vedwi*f zfe0,s.by, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not touf,eb0-gjpd y2s i* ).zfv0jweching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of0j b0 x(wny7ef 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 1tua8xx7x75hxx l asvy ;59u vlength 12 cm and diameter 2.0 cm will just barely float in water. uyxax 1 xlh8ua9;vts 7x755vx What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0) uzooara5d, g3i)/n 0zd6cxv 2h4x zz m wide, and 0.50 m h2d/r)5uz4zaiz hoo03,an)dx zvcgx6igh. How many kilograms 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 beneatni3 ck99acx2 i85trd5bo3bosnj83qf h the surface of the water. The weight of the skf9bcxdj893 ioconi8t5 q2r3 n5 ba3displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water witof4/ g z/kxt6oh three-fourths of its volume beneath the surface. gz/oot /6fxk 4 What is the object's density?

  A 200-N object float50p77g6 (3c s7qkflti khjzeis with three-fourths of its volume beneath the surface of the waj7hp(z06efik7ts5gl ki7q 3cter. What is the buoyant force on the object?

  A polar bear of mass 2001unc 0r 1,lbd7yc ju2p kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in s0jc17ruld ,1bnyc p 2ualtwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameteg/7 brc ,m 9zu8;yrrkmr 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s.kv g+1r50r lijahj3.j ;bs6ls There is a 2.0 cm diameter restriction in the line. What is the velocity in thisjj+skja3 ig hv;1bl6l5.0rsr restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressu8th*p9*+drmds1kr a ak: p7(t6liow ure 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 : 7so86w ucw+5j+4hkvjnqy ,h3 gypbya drinking fountain with 300 kPa,47nuhp6c3 ywho+:g wqyk yjj5v,s+8 b if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a wate kz toikp(h;vnfgj2 .0a;2c s)r storage tank that holds water at a depth of 15 m. At what rate will water flow out ofc.;0 )o2ij t2pzkvf(g;ash nk the hole?

  Water flows through a horizontal exvog(re7o 7w-k1n 2n(l *zzc 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 qogzn1.4;fa dtake to pour 4.0 L of oil td4znqg o .1fa;hrough 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 part of the funnel.

  Suppose that the build-up of fatty tissj/lt8jl r4h*ovb-k1 m ue on the wall of an artery decreased the radius by 10%. By how much would thhlm1- ok*rlbj4t8 /j ve 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 twice the diameterhv 6sk;xfs/i4( (qdtq of tube B. If water rises 24 cm in tube A,qsdfkq;(6/si(x4v t h how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will wate94c3y3 n *xc )-l5yceiopysol r rise in a capillary tube of diameter 1.25 yylcy*3l -o)p4i9nos3 eccx mm?

  232

  To what height wouldktkepxg9t(c )dwf;. 7 b- sk3b water at 0 degree Celsius rise in a glass capillary tube with ak9c.7;bxdbt g 3t p-sef)w(kk diameter of
0.50 mm?

  A narrow tube is placed esr:q 9p- j)oqz:gj1vvertically 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 loweq-g 9:qjrs:)v pz1jo ered 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 length 0.120 m and width 0.600 m with a soa q tb,ct(9+xgap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how muchxt,(qb 9+tgca force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm,gry1*oox;ot 6is2 9 31 qzwstu 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 that 3*ut19ozto2 x6;w qgr so1ys ithe frame is 12 cm square?