The three common phases of matter axj39uk qmxz ,2re

  Density is

  Substance A has a densnoukbh ft3) bv;vd,a0g3 wg5j(cs j94ity 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 ad/jlm g9jde:6 unit of pressure?

  Consider three drinking glasses. All three have the same newj(d:1q.l nkm8sy6 i rlk*1/oj dh/area base, and all three are filled to the same depth with wat8k k1r jdo.liwnmj/ye*/ n6d: l( sh1qer. 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 at the bottom?

  What is the difference between the pressures inside and outside a ti gw q,ajd9gu3-re called?

  When atmospheric pressure changes, what happens to the absolute pressure at t,0tm:h7o 3ojtiv oj /io fykxx3b32cpdc, b ,,he bo /td, ohm2x bxj,ytfvi0okcio b:33 pc3o7j,,ttom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If yo. qy fh8zy4v+su dive to 2.0 m beneath tsz fv48+ .yqyhhe surface, what happens to the absolute pressure on you?

State Pascal's princ /w1 ok2eahjy2pora yx7d6g*1uck6e0 alv+7r iple.

State Archimedes' principlevt d3j 65nyg a6:w1ian.

  $50 \; cm^{3}$ 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 ad rglyn4:2f5c z4oo) hz h)y/knd deeper into water of constant density, what happens to the buoyant foroog d: z /n)hz y4k52f)4hyrlcce on it?

  Salt water has greater density than fresh watelcw84 twu 9vj+r. A boat floats in both fresh water and in salt water. Where isl 8cuj+v9tww 4 the buoyant force greater on the boat?

  Salt water is more dense than fresh watesalfy1ey l*865g vuk 4r. A ship floats in both fresh water and salt wat 8k61lu*e s4vy5lfg ayer. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where is the buo t 4a-i94om8o 4,a*upoj+t c ob7rbxfpyant force o *p94bi4mxtf+bp7ouo,rj8a-c ao to4 n the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right n-j sgnpt 680n 1u)mjpu+q6tz uext to a 10-kg piece of lead. Which has the greater buoyantu1zuu8m) pp0 t s j+-ng6qj6nt force on it?

  A piece of iron rests on top of a piece of wood floating in a hl7dsr7sqi 9/z j-x;abathtub. If the iron is removed fromshsj7 9zxd ;lar -7q/i the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second dh fgx*;*)dd a (uthx-piece of wood sits on top of the first piece, and does not touch the water. If t(*dfhd uax-th *; xgd)he 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 a sd*a*((z* 6h ivqeqjof the pipe at point B is larger than at point A. Where is the speed of (jd a**sve qq* hiz6(athe water greater?

  An ideal fluid flows at 12 m/s 9.j8.ju:a1 jan9xuyr oao *xhin a horizontal pipe. If the pipe widens to twice its original radiur1xajua j.9 *u8oa ny9xjho. :s, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Irlz;moc 7 h56z6z xij();wxwnf the pipe narrows to half its origini5 wm(c6 h;z6 r w;xjnl7xzoz)al radius, what is the flow speed in the narrower section?

State Bernoulli's pric11p4z inobh556i-k xgk7y)z, w trqnnciple.

  Which one of the following is associatukbj09n g- 2lved with the law of conservation of energy in fluids2 0 lbukng-9jv?

  As the speed of a moving fluid increases, the pressure in the fluinht6m*safo p9+i .x2oh n s(9 -x7 ecklexo/4hd

  Water flows through a pipe. The diameter of the pipe at point B is largk5om k,gq f22dp) n)oxer than at point A. Whereo252mok gq )k), nfdxp is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is 3 hr99(amjiuo because

  A sky diver falls thy a)44.wa;7my 7hri zra3xd my9-jvinrough the air at terminal velocity. The force of air resistance9m7h nz m3y-4vr7ray 4. yiw ij;adxa) on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from /v in8dwjsn5h )yb)3e:*/d kxph v8s qa tall tower. Whivwp : iek/xd8 v3)8s*/ yjnqhn5sb dh)ch will reach the ground first?

  When a small spherical rock ozn p5 u4tdj/2hf radius r falls through water, it experiences a drag force znd/j4 2uh5tp $F=arv$, 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 em/qtgz)n)2l8 vg hs:rffect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in ):v8 m2/zlr nsg)gthqeach of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice yosowal9 +s5ghv9zqv6osz) :l+-lu )the diameter of pipe 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 A is ozl 6):zgh5-9)ossl9 l+wva ousqyv+Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe B is twicegxf.6um y,z; ys4l,lx as long as pipe A. Water undergoes viscous flow i y,l4 smu;6fxl.xg zy,n 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 rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" tasto.3y i(o iz d41;yddshe seems to be associated with oil1 y4 soi.d;d z(dio3hy 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 water, the water rises to a height h. .wwjvzhqa -4x6+ x z34xsdrw0 If the diameter were halfdx +xs30jq4 6x.4wwar-zwv hz as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently l,u*a3nyqr pf /ightweight that they can run on top of water without breaking the surface qa*unryp 3/,f 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 suffictc4pnd t:cqi5zj *,s+iently lightweight that they can run on top of water without breaking the surface q cntc+:p*zdi ,j45 tstension. 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. What is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm itu 9v, 9a:gil:xoe6t x 4.00 cm has a mass of 30.0 g. tx:ui9e: v oa9l6,tig What is its density?

  A liquid has a specific gravity of 0.357. Wha/s pr30k jp. ua)jo/ eko:(bzat is its density?

  A brick weighs 50.0 N, and mej zl (2j8 e,nx)l 8a8ybaqbezg74e( hjasures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on ajb7zg eq(yhen2()lj 4lj ,a zx8e8b 8a horizontal surface?

  A person weighing 900pp.sys j n4gt647ddx)o y9ip6 N is standing 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 debecyf039 9yz(d wx6pfpth of 120.0 m in the oceafdfy 9c9ezbyx0 6w(p3n?

  A circular window of 30 cm diameterbmd2e b; rz2)gagc3 /b in a submarine can withstand a maximum force of ;3/g)b2eb mzdb 2 garc$5.20 \times 10^{5} \; N$. 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 is 30bp0ba0 ejb6yicaobz3 w8f- h;- za0i 90 kPa?

  What is the gauge pressure at a location 15.0 m beloq9jc x+0fl d h/gk-. xegb8hj1w the surface of sea? (The densx9 fhk.h cld0jgjg/ e+-8qbx1 ity of 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? c(gdj 1k;;wks(The density of seaw j w1c(gk;;ksdater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small piu1xqmt;g5 g u)ston q1m;uugg5)xt 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 small piston hasy 03e -)igs,iktmw nu,z6 bo6n a radius of 5.0 cm and the large piston has a radius of 15 cm. Whabo0-s 3i gmwk6t),inn ,uze6yt 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 pm)m/tf4 j0xx 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to acftm/xjm40 px )complish this?

  The small piston of a hydraulic lift has a diamedl) wi)ahaze 4)(nz9iter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raise )9l(znh)4i ai)wzad es 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 water. What is the buoyant foraz43 lr b4mxbep.oe: 5ce oflep3b.raem4: 4obxz 5 the water?

  An object has a volume oh::vlx zup /7+-pp+zy km.rc zf $4.0 \; m^{3}$ 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 n-nms v7 u dx--rqsi30while submerged in water. What is the tension in the string? (The specific gr -ir37s-- v0dns quxnmavity of iron is 7.86.)

  If the density of gold isylif-pw: 5gl e f ji;8,no,gg( $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subjnr,.b ly;y2h marine (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 ir06c l0rw5 pbkmmersed in water.rbw5cp0 6kr l0 What is the specific gravity of the object?

  A container of water is placed on a 64 rno cw ujze0t2yz78scale, and the scale reads 120 g. Now a 20-g piece of copper (spetz67rjuzn20 84wc oyecific 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 with a mas 3pnq gfi/:fb35p ,d50oj yyyts 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 cm and diameter 2.0 cm will just barely float 36:*oy aafb bx6t 0psein water.ft 6xabe0s :p*b3ay6o What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 flina(9fdn9/u of10. wxfdr-m high. Hown.( do1fn9w9iu - rf fax0f/ld 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 beneath the surface off3e3kzz s+e7+y z9lc g the water. The weight of the displaced water is 2000 N. What is t793+z3lcee f yzgk sz+he weight of the object?

  A solid object floats in water with three-fourths of its vt72l3r, d nyog9wql1o ,g 86mxpei/spolume beneath the surface. What is the object's /g3r1d lp28oxse,inty79,mw 6q oplgdensity?

  A 200-N object floats with three-fourths of itsw7t *)pq1ha2-jkk dil volume beneath the surface of the water. What is the bu wha-j*)ik2p1 dqkt7 loyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What a)rcsw2cc0p zn+nz 61,wuq; t is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of icnp0w c q,aznc+;t)61r2wzuc se is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the flow rat i6.j4nhf-tibc3+ cd de.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 bsr. :tkr, dix/7vd+rm/s. There is a 2.0 cm diamedd+r r7b xvt/.ki:s ,rter restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s:z+3lwlp2x h hz ekkjoe(5 /,u in 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 for a pump to supply a drinking fountain witpw 0(prsyj/ 3ch 300 kPa, if the fountain is 303syw/ (cp0 prj.0 m above the pump?

  A hole of radius 1.0 mm occurs in tkm8 qcv;dp6o2 he bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flowvpm62 qko8c d; out of the hole?

  Water flows through a horizontal pipe of cross-sectional ar;f;k -tb8peh zea $10.0 \; cm^{2}$ 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+p hnasd 4-h n-dpby 4woqm53; 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 part of the funnya34bw m54dh-s+pndhnpo -;q el.

  Suppose that the build-up of fatty tissnx qj9:qw7: iifr l0*nue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a coij:7 n0filx*q9wn: qrnstant blood flow?

  Two narrow tubes are placedi3cu17oo .r ij czl+glc ru-*. in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it risu l 3- o*zi..uc1rc7+ rocijlge in tube B?

  The surface tension of wj cv zh:+r-h;eater is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.2 r+:ejc;h -vzhmm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tu.axp8da x,zk,be with a diamxp,.xkz, 8 aadeter of
0.50 mm?

  A narrow tube is placed 9;x(y lt qlj0dvertically 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 lowered to one-half its original value by the addition of some soap. What happens to the height of the liquid colu;q 9dxjlt (0ylmn in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 j2f;i b6s 3ianm 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 exert on 2;i36ajsf nbithe 0.600 m side?

  An adjustable rectangular frame has b- g+ 3 yh; xh2nuu2lfbv) uker195txylength 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 required to mohy-19vxf h+2b2ub3x k) 5lgynetuu ;rve the adjustable long side so that the frame is 12 cm square?