The three common phases of matter t 7/3pnznwrg 5are

  Density is

  Substance A has a density j9;lrdp. zcg g x 7o;+c;wsg.lof $3.0 \; g/cm^{3}$ 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 followin594be .xm v5ec*frh*xse ,cusg is not a unit of pressure?

  Consider three drinking glasses. All three have tqx wj0q).j wr0g/o pq1he same area base, and all three are filled to the same depth with water. Glass A is cylindrical. Glass B is wider at the topowxjp.j r)g /01qq0w q 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 the pressures insm:pqgobs5; 9p ide and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at thjt,f30ptmvj: g( c4nue tm,cjpn43gt :0 fvu(jbottom of a pool?

  You are originally 1.0 ed+ 4)wb3j 8ano i-icnhc1y s90:mljam beneath the surface of a pool. If you dive to 2.0 m beneath the -njcals8+:d e m 0ih ow)b93yac14jin surface, what happens to the absolute pressure on you?

State Pascal's princiujsl 22.bbw6 l(d ym8fple.

State Archimedes' princi755iawd+ mt * ve(feueple.

  $50 \; cm^{3}$ 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 v4i+hlr8 xx h4 jq1gyks80bo)density, what happens to the buoyant 8ojyi 1g4r)x0x+ qhk ls84vhb force on it?

  Salt water has greater density than fresh water. A boat floats in both fre q2 )lxnnd(k1tsh water and in salt water. Where is the buoyant force greater on the boat?(t2nxlqd 1) kn

  Salt water is more dense than fresh water. A ship floats in botlcjk 70k2vwu o g.ml +*dru*;eu4yr)s h fresh water and salt water. Compared to the fresh water, the volume of water displacd u*y;24s7 ucgvuwk.)rmlo lk e* 0r+jed in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Whewi, + i/4n 2xfb/g,wf.wbga rfre is the buoyant forc w+4.b wb/,iwfg/fxr n ,afg2ie on the ball greater?

  A 10-kg piece of aluminum s1/ zvt-jpodq+c+n6: uic3gfdits at the bottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyant focjdv+-c fz gun6/d:3t+p oqi 1rce on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If the i( 6szvp cfks)5+ft e5eron is removed from the wood, what happens to the water level in the t e6p)5zctkfs+ (sv5fe ub?

  A piece of wood is floating in a bathtub3 c k; k*tmwcf ol9-y57b00jdc2cp thz. A second piece of wood sits on top of the first piece, and does not toufpd05k7 0chzc c9yb3ojc mk -* ;t2lwtch 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 diamet oprc3fn-qbjh pnv/ -7,s3n+ker of the pipe at point B is larger than at point A. Whecs -nrp3/-7nqkhv 3 foj p+,bnre is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe w2,m,*mshz9c e;3 7bdqb3lldd(v w qfdidens to twice its original radius, what is the flow speed in the wiqzf2b3s 7*9wbde;m(,lq3ld dm,cdv hder section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Ibv ri/1-, s42ta n3y xyhtgyn7f the pipe narrows to half its original radius, what is ti vyht3 xngn2,asrty 1/-7 yb4he flow speed in the narrower section?

State Bernoulli's principle. dk6owv09 r6fjb0e9vw

  Which one of the following is associated *a8,a xwkaul-1zqw p7m m5n )fwith the law of conservation of energy x7, akfpaz 5l1n-mquma8ww* )in fluids?

  As the speed of a moving fluid increases, the pressure in unq .pupv6 uow.-8: zmthe fluid

  Water flows through a pipe. The diametewt h:9 voo.k,:glcwb6r of the pipe at point B is larger than at poingwk: ,o :lhwt.6 b9vcot A. Where is the water pressure greatest?

  When you blow some air above xho w;22.qv aia paper strip, the paper rises. This is because

  A sky diver falls thrdq4dgtg 20q6 sough the air at terminal velocity. The force of air resistance on him is6q2qgd g0t4d s

  Two Styrofoam balls, of radii R and 2R, qk . r2gu;g4 gyx0en/aare released simultaneously from a tall tower. Which will reach the ground fkg;xa0y .gqr4/eu ng2 irst?

  When a small spherical rock of radrgnvjrr(biap2 c j7s9a y-5 /7,rb5jpius r falls through water, it experiences a drag forca7-/ 75 csri r2p,rjbgpjrjab59yv(n e $F=arv$, 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 f-r3y l/bq1alm2s , b9zex fd*yluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, whic s*2 bl/ ,by mfz-a3dely9rq1xh would cause the greatest change in the flow rate?

  Two horizontal pipes are the same l- 4rxomv6ac -q +lqje5ength, 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 l6 or+me4val5x- qc jq-engths 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 diam6nqwz3y2: foj9bbs, teter, 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 floww39yo zn b:,2j6qt fbs rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" tsx*i,y q:uo: ffx6 t)r)qsho+aste seems to be associ:so6yq s: r*htq) ffu,o +)xxiated with 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 diameter d is placed in wa bipk0q w/.uk 6i6atpg:n.6sx ter, the water rises to a height h. If the diameter were half as great, how high would the water rnxk6bg/i0.:wut ki6pq . aps6 ise?

  Certain insects, such as the water bug, areqmd/(z 0opsbo*7 cm .n sufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B is nqmc b0moo/sz* pd7 .(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 lightweight that tcy/pi+m kpl ;+hey can run on top of water without breaking the surface tension. This is possible because the water, due toli p yc/+m+k;p 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 dimensionjjmngkp s7n ;t((-0jixzi*c(s 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its d tj-kii*p(j (s z;ncmng(7x0 jensity?

  A liquid has a specific grav2st.0r9+a y(ps4c5 mm(hidke e8 gkx nity 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 is theydiy 2-f +x5y forr2r; maximum pressure it can exert on a horizor2-xy frify; oy d52+rntal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has -cuhekn: l-x-area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolutles8;qt q:g,gl2s- j de) must a submarine withstand at a depth of 120.0 m in the oceq8 j t 2-sd:;gelqsl,gan?

  A circular window of 30 cm diameter in a submagdw;a:0z45 fat:9sa e 6ht0wvf .ypsyrine can withstand a maximum force otwg a. 4 vtys600:sw h9ea pa;d5ff:zyf $5.20 \times 10^{5} \; N$. 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 abso k21j g gv4ggshj6n+q-lute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of se: y.ig6ys ( empl/-jhpa? (The density ofe(g-js yhm6ppy/l. i: 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? kh,w q7pvppq +d al 0-6j1skt2 (The d pk 2 sd0j +ppq,ah67lvtk-q1wensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydrau,b-8gt s9yz 3hz 54 hkbm2dvanlic machine. The small piston has arb8vtg mzhy3z54 s-h bdn,ka29 ea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, thlz0uzv0bj,cdw y8bm: q9) 1 jee small piston has a radius of 5.0 cm and the large piston has a l)mdz8z00 b y bjjwev,1q9c :uradius 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 wcg0pp4p.i7 6 s8jkusby a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston .g jpswkppi7 cus8064to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its lar qup*-wa w07pwge piston has a diameter of 40 cm. The lift raises a load of 1* ppw7w uqwa0-5,000 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 water. What is the buoyancu uvg+m. 8f01 xdzye.lk,0 rwt force of the water .kcer 0x,f+0w zv8.g ymudu1l?

  An object has a volume of fk zx1b 5-s2qj ge1anjdg 3s65$4.0 \; m^{3}$ 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 while submerged v (yh+ d02zaybin water. What is the tension in the2 +ah0ydbz vy( string? (The specific gravity of iron is 7.86.)

  If the density of gold iu.nwctktaxk9;kh tb,78 y y. /ai(jy4s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (7xagyp7v0ow+ q , itgw 1nr6x(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 immersed 3zc5 b oo:pgn3in water. What is the specific gravity of theop5b 3oz cg3:n object?

  A container of water is placed on a scale, and the scale w5k *r 3/r5qzyfmeyc2 reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended5*e frr m5yzk3/cw y2q 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 kiz1 3 d,uc q9i4t ujk8ihw1p1ng 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 bqzaogvu6 e )n k820/iand diameter 2.0 cm will just barely float in water. What ie6i b) kv2 go8/nq0auzs its mass?

  A rectangular box of negligu4o :r4dd60ark9r z waible 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 bo d or uwzdr4a6409:karx 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 w nv:07invnrdyb.9 /xthe water. The weight of the displaced water is 2000 N. What is dwbn v9vri/n0n.: 7 xythe weight of the object?

  A solid object floats in water with three-fourthdj7bwhc9 gc9;dd0 d4es of its volume beneath the surface. What is t7dw9hd 9d c0 d;cgjb4ehe object's density?

  A 200-N object floats with th,yk 4ll u. -2 gtr0sst:fg6okrbb 7s/vree-fourths of its volume beneath the surface of the water. What is the buoyant f s 4kr/y7rb06 ,lgkg-:obltfs tuvs. 2orce on the object?

  A polar bear of mass 200jxcit5 a2hh84 br0u l/ kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear i0c2t 5xhij r4b 8/hauln 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 2.0 m/s. Findw0gp6l iyygdbk-sbh. +d( z+ 1,hrcb- the flow rate.

  Liquid flows through a 4h ) +vuxd(li-x.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velo- x) dhi+vl(xucity in this restriction?

  Water flows at 12 m/s i/1mcygn0+n : uuix8 1(mev/dkr4tnzsn a horizontal pipe with a 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 fopgvn -e n91y7us7 8cxqr a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above nne x-7vc 789y1gqusp the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that h38: r jsiilpt*s//ni nolds water at a depth of 15 m. At what rate will water flow outp*/ss8 i :3ljrt/inin of the hole?

  Water flows through a horizontal pipe of cross-sect6cge y :jc/u0zional 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 wouls sgq(joz;o- 7d it take to pour 4.0 L of oil through a funnel with a neck7zgs-; oo( sjq 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 tissue on the wall of an arte24 :ys9a b7p4qmhemkpfur o1 1ry decreased the radius by 10%. By how much would the pressure provided by a9umsp fhq em4: p721b yrk41othe heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of waterorm5w u8w 4pg*. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it ris *4wrpwu8o5m ge in tube B?

  The surface tension of water is 0.073 va l8ug7r+c +kN/m. How high will water rise in a capillary tubeuk+8 vgl +car7 of diameter 1.2 mm?

  232

  To what height would watepi:2 w+s62vihdu+qms +u te;ir at 0 degree Celsius rise in a glass capillary tube withsi wiv26qspt+;deu+ u i +m2h: a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan ox/ *h eie :dol -d1b-ye+tf; iia8++ddqwxwn8f water, and the water rises in the tube to 4.0 cm ay1owxalqbi de xifwhd + 8d-+tn +:8ei-;e*d/bove 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 length 0vfm.) (jlx; mv.120 m and width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much force does the soap film exer.)(flmvjv; mx t on the 0.600 m side?

  An adjustable rectangular frame has length u; zce,owf1t2+a m; 4tmn8xii 12 cm and width 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 required24m8a+tx;c, ifw n; 1m ziteou to move the adjustable long side so that the frame is 12 cm square?