The three common phases og yl1n;ps,nl :f matter are

  Density is

  Substance A has a density (7jy/ vcsf9f.x5 hgvx 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 jjlhh+ny)5l3 1 ck1kl b emh8/is not a unit of pressure?

  Consider three drinkin)a 6/g:djt -qgfzfpa6g glasses. All three have the same area base, and all three are filled to the same depth with water. Glass A ifg qdapjgf6/ t-z)6a:s 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 pq8n g0:m8 sedhy 4a0h mlosi/17fsu2a tire called?

  When atmospheric pressure changes, what happens to the absolute prehf -q4p;zjc. fssure at the bfz4.c;p qfh j-ottom of a pool?

  You are originally 1.0 m beneath the surfaceq u,gf*bo/gvmy, aygt5i 9r8: of a pool. If you dive to 2.0 m ben5vabygg8r*q uoy , :,figm9t/ eath the surface, what happens to the absolute pressure on you?

State Pascal's princi:l+kk j6k0 bdt/k fme*ple.

State Archimedes' prin5 v9sr*f,iq;s; mgur8ukzs 2iciple.

  $50 \; cm^{3}$ 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 (1/ 6v 0ccevb9t qhhedand deeper into water of constant density, what happens to the buoyant f1cc dvte9bh/6eqh (0v orce on it?

  Salt water has greater density than fresh water. A boat *di 75- pt(mg6td(lt :sxt ijmfloats in both fresh water and-mj(dp5:mt7ls(xi6 i gt *t td in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floatwfp2sh(*vcx-*4thx q s in both fresh water and salt water. Compared to the fresh water, the volume of water displach2sp -qhft( xx*v*w4 ced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where is the lf697ptmf0fq+4y jzrbuoyant force on the ball greate4zfmqj 9 f06 ylt7+pfrr?

  A 10-kg piece of aluminum sits at the bottom oxr qb22 lg1mk+9 5xccrf a lake, right next to a 10-kg piece of lead. Which has the greater buoyantkg cmxl252 q r+91rcxb force on it?

  A piece of iron rests on x/0 w5zmllb, vtop of a piece of wood floating in a bathtub. If the iron z/ 0 xll5wmb,vis removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A se67k5y,x0d d ntkmv,ivamscly ys(2,4cond piece of wood sits on top of ,vcysdmxm2d 7k yslna 4 (0,k5,6ivtythe 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 in the tub?

  Water flows through a pipe. The diameter of the pipe at point B iakv14: b mc(ibchfe-. s larger than at point A. Where is the speed of tackf- c : 4mbeivb1.(hhe water greater?

  An ideal fluid flows at 12 m/s in a horc) d8rdk82nz:y 2hqbxizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in thqd2yh: c 8x)dkbz2nr8 e wider section?

  An ideal fluid flows at 12 m/s in a horiun tub ,)p5dq9zontal pipe. If the pipe narrows to half its original radius, what is the flow speed up,9ntdb) q5 uin the narrower section?

State Bernoulli's principle.u+ hrr5o92ub a

  Which one of the following is ass,qaj*o ) ywmp *yw )4vc4it6vkociated with the law of conservation of energy in flc,6a)t4ow j*wikq )ym4*py v vuids?

  As the speed of a moving fluid increases, the pressure in the ezk e r w 9p0ta 94oio;m5quzvdw04w04fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger tha2y th uc*-x6oyn at poiny6*- yhotxcu 2t A. Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is becauset8qscten pa1(( dd+m 06w0dkz

  A sky diver falls through the air at zz ;t*ycge(5te9 -qdm y/bt/a terminal velocity. The force of air resistd-c y/9;gz5*aq t/ temztyb(eance on him is

  Two Styrofoam balls, of radii R and 2Rzg qqt4bc-yy(1u,w-zl owqgrud3hk0 :3; e(a, are released simultaneously from a tall tower. Whic 3et4-(( q0y,kha uwg:zgwyqlc 1d bz q3r-o;uh will reach the ground first?

  When a small spherical rock of radius r falls through waterhlqf8-3iblu 0, it experiences a dr0lf 8qlh3i u-bag 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 te5a1fl+yn5su l xq-70u 0 jddc 3icdt/hrough a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest +0f7 /ltci edj-1qs5xl0nu3a 5dudcychange in the flow rate?

  Two horizontal pipes are the same length, but pipe B has 4ka- /-*q7f hygjq trmhnf6ux8o3j+ x twice 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 rth q4* 73fo6ag+uhfj/8 kjrqy-mx -n xate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe B t s/095pzyrjpis twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the sarj5yp9 0 spt/zme 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 c/3j: d*jtwpm often 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 up/j wtd*: cm3js "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to gn42(on h .tbnnqn pnkqq)23.a height h. Ifn2t n(qbnn4n pg 3k o).2qq.hn the diameter were half as great, how high would the water rise?

  Certain insects, such as t:v..wlruy0 l3osqv u2he water bug, are 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 twice as big as bug A, in all.ow: v lu. rv3sqy2ul0 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 they cf .6,wmw7yjizv;o1(a i iakw+an 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 i7iz6o,.maw(v1f w jiaw+k;ywater 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 x 4.00 cm h s 8lk; / lmnh3t p,/uso1b55wvk*aai1jhxor: as a mass of 30.0 g. What is its densityiw5asv o5 s/1lj ,; tu*1ohm3lb8ankkp /hx:r ?

  A liquid has a specific gravity of 0.357. What is its ded -i0kf-altg.luh,+ tnsity?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm xd5y,bcv1c: pv 0gd0i z 4.00 cm. What is the maximum pressure it can exert on a0 i,vy 5dg:10cz dvbcp horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has area mo oar6hi;* )i*pga7k$2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withsta4 dwdw:1kr1jvnd at a depth of 120.0 m in the ocean? jdk:drw114wv

  A circular window of 30 cm diameter in a submarine can withstand a maximum fory*i*w9**g d h9boc iiizxp(d6ce dz i9di69 *i xy*(*wiobcph*gof $5.20 \times 10^{5} \; N$. 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 pressurevt+ nvk2pfc3 *5bask/ +wf;kq is 300 kPa?

  What is the gauge pressuref 0ke6 iajtgk6 l2w1z64hd(4uq eqjp-g00h pd at a location 15.0 m below the surface of sea? (The dens2f0 4qh qe1wk(t6dijk40 glep0- ja g66 udhpzity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below thrrxf(e;c:wkl 5 ixw 3i3v-1nke surface of sea? (The densvn53 w xci:;3rlr1 -kwkxfe (iity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. rnm(4ecigwxipj 7-4y 2p- (ps The small piston hc pm-psw4( 4 xgyp2nr- (ei7jias 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 radius 4biccms ,wz /7 drcgv 6 3ype4w41uw xa5g)s/xof 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small piston in orde3)i w ma7/c4x5sbgwcgdrpy4e 6u1vs,cx/wz4 r 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 di3yrhxn1/g )xw s(bjc 4ameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish t4hcbxj(s3yr 1 w)xgn/his?

  The small piston of z8g8w9wyh*x(an+e ;d qpr5 -w*j jpcga hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameteahgwx -e; jy rqgj*8c+* wp895nd(wpz r 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 40 N in air and 30 b/ ua6dvp d ls:y;g3,rN in water. What is the buoyant force of the waty:gdb rds 6;lv,u3/aper?

  An object has a volume oflnsx;2nhoz d) mn)yz8 5 smm9) $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of soll gsq ahz16k2-id iron is supported by a string while submerged in water. What is the tension in th2a khsgq 1l6-ze string? (The specific gravity of iron is 7.86.)

  If the density of gold +lp64 7n4ovb fpiy ;syis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submak tp;2t,vni. frine (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 w k6u7.zt a) vu,4srkc0lz2asbhen it is in air and 6.86 N when it is immersed in water. What a7 sk4uau0c.v)s,zktrz6 b2lis the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 ,vjm2m bo dy(;g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lower,vj(yd 2b;om med into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a m4xhfh h6w3x) zass 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 in3pig z+by id:/ water. What isgidpb:/ iy +z3 its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0lb//jsotf3ja- 5 ;uhz m wide, and 0.50 m high. How many kilograms of mass can be loahj obzlfj3s/tau5/;-ded 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 be p8i*zsb/ggvlhfa 0.q 0:8-orzb 7eof the water. The weight of the displa .-7l8epogvf*0 8zsbizgb/ qhe b0r:aced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourtmpj; w9lt/5l5a++rps x2g acvhs of its volume beneath the surfacg59 /l2r5 psp+ jwav mlt;ax+ce. What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the sr o*bu xa( dxgfv3,:t.urface of the water. What is the buoyant force on the objod(r f3g* :xbvta.u,xect?

  A polar bear of mass 200 kg standi4 arv3/4fai gs7xl;x, 5nowbs on an ice 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 gabi5nvfl x4oi 743,rax ;w/g sravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the flow rap 90hu ,bj)syhte.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. 2i.4:tn fsct: dbps bgk+s27jo(y-vzThere is a 2.0 cm diameter restriction in the line. What is t.c4 yt2sjb okf(n:i:vds+72-tsgp bzhe velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipev+lox5m g8zax +ui r./ h.rz+y 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 dlwyfl4 dj22ozh8 +01 b6ggl 4 swyz-thrinking fountain with 300 kPa, if the fountain is 06 -t2byzlgo+s1l2wwdfl y4 g j8h z4h30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bv yk xcaby(4tih0f2(tw3w z8 o,x12xeottom of a water storage tank that holds water at a depth of 15 m. At what rate wiy,i(2wx43aobtf( cv xxwh28e kty 10z ll water flow out of the hole?

  Water flows through a horizontal pipe o:06 dtzpzg(mvf 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. How0rf jl kwx2*br s1/bz+ long would it take to pour 4.0* rl+/b0fzxbr jsw2 1k 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 funnel.

  Suppose that the build-up of fatty tissue on tu8t:mwuc jvq ipj-1+ 2he wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heartw q1ci-u:t j+upm82 jv have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A hasug0 2u0nh; ekyv;hqn0u *lr,x twice the diameter of tube B. y ;;nhu *,qelun0ur gk200vh xIf water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 hoow(9 :cnei9N/m. How high will water rise in a capillary tube of de i9w9n(c ho:oiameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius:10xgpt +u.bph6.0bbu hhhc z rise in a glass capillary tube withz0u h.bhubch10.g6 bp+ xh :tp a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wa80 iywe8ovs+ cter 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. Whescy 8+ 08iwvoat happens to the height of the liquid column in the tube?

  Consider a rectangular ilb93 i0 cgo6wframe of length 0.120 m and width 0.600 m with a soap film formed within its confined area. Iigcbi3 lw90o6f 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 rectan-5m zaex,0/ra ok oo-svkcu.7 gular frame has length 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 fra csaak-r0.u,5xze v o7m-koo/me. Soapy water has surface tension 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?