The three common phases of matt8mmg / fgpn2,gyuo5 .1u,w 5dulha9fuer are

  Density is

  Substance A has a density sc.g zqteu y 0.5m 3boyw*e(y2of $3.0 \; g/cm^{3}$ 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 isfnipm 7;) zb:*)ih z1/ 40ixzryfkpcv not a unit of pressure?

  Consider three drinking glasses. All three have the same area b0fy/ .e; ckntkase, and all three are filled to the same depth with water. Glass A is cylindrical. 0 tn;ek/ y.ckfGlass 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 t )4vl 19ypps,ar8( la f5vgdeche pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens ton v r6*8iv(hhd the absolute pressure at the bottom of a pool?hvnd8r6i h(*v

  You are originally 1.0 m beneath the surface of a pool. If you tw keys656t np h*gj8dm0zi+( dive to 2.0 m beneath the surface, whatn5ts z6em(6 0*p gdjk+yhiw8t happens to the absolute pressure on you?

State Pascal's principl y4a/- 9z elmtw.tuuh9e.

State Archimedes' pr-zp 3pn0p8cd hp -ze4sinciple.

  $50 \; cm^{3}$ 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 density, what habh dy+r( *p.ttjpq *0be la5+appens to the buoyant force on i a+ba+0 *yt5l.djhpr *t(bqept?

  Salt water has greater density than fresh water.jg 3e7j+uj :yb A boat floats in both fresh water and in salt w:7u beg3jjy+jater. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fhg1)l 6 kvu,fnresh water and salt 6hu)nf,gk l 1vwater. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but float b:ks;8 sfeq)zs in a pool of mercury. Where is the buoyant force on the z8qk) ;be sfs:ball greater?

  A 10-kg piece of aluminum sits at the botrcq*cm8p.2 x ctom of a lake, right next to a 10-kg piece of le2c mp*r. x8qccad. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood +:x m u6qy*o04mj9l vhy g0btkfloating in a bathtub. If the iron is removed from tt* 0:+0yxlo6qhu jv9m4m kbgy he wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sitshw7ebar/r)sc2 i 1yo) on top of the first piece, and does not touchh7)y2/r bw o1a r)cesi 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 is larger tha 3 70aipoyq4pwkh8 *g-qh(jjgn at point A. Where is the speed h-iyj8q gjh0 *pa3 7k wop4qg(of the water greater?

  An ideal fluid flows at 12 eqhf/ ycxngw7 k9b7 5:g;lu+mm/s in a horizontal pipe. If the pipe widens to twice its original radius, wwx+hq 5nmuc7:gg7b ;y 9kf/lehat is the flow speed in the wider section?

  An ideal fluid flows at 12 mwwv9 :/2i6kd xplq.rx/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrow9 iwdx/w: 6px.2krlqver section?

State Bernoulli's prg c8;w oro9q7ht1oe g9inciple.

  Which one of the following isj/a7oe((o yjcbghrl x lf s1nx;*/.w+ associated with the law of conservation of energy in fluids?j( c e j7shgx;+bly1l aw(. ox/r/of*n

  As the speed of a moving fluid increases, the pressure in 9e l(c;1u l8bd;9iyo6rjr hb ithe fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger th6-- 8+ wv)a ijj* lcwkakoykt6an at point A. Where ic-oa jk kj-i v)6l*6k8+ wtawys the water pressure greatest?

  When you blow some air ab.-j *slip;wnlyz:b;yove a paper strip, the paper rises. This is because

  A sky diver falls through the air at sslz.y fnl656j2dek;6/uud u3/ mr ra terminal velocity. The force of air resistas2/d.k5 r j;y /una66ue3 lz6 flsdmurnce on him is

  Two Styrofoam balls, of radii R and 2R, are releaseizi9s8 f s )oqq.xyd;9d simultaneously from a tall tower. Which will reach the ground f98qsi xz;iqf)d.syo9 irst?

  When a small spherical rock of radius r falls through watqhlf c4/c)1 bber, it experiences a dr h/1)ccbfqb4 lag 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 through a narr mkl84 ds/qd+9hzpudpn0/3jr(c g( orow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greasl/0/hp4 n(d3rozu (q gdj8pkr dmc+9test change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice mti7)wa/se* u 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 Q, what is tsaimw 7e*)u/the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but mk(px:v4gem387q go qu/jh:a pipe B is twice as long as pipe A. Water undergoes vi q:kvg4qmo(u 7aphm:x/ 8g3je scous 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 rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems tytwpn e(tl1 59o be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readi (nlwtp9t5 1eyly explained in terms of

  When a tube of diameter d is placed in water, the water ujuun:pszu-+ p :ua 3+rises to a height h. If the diameter were half as great, how high would t3+ + u:pus jzuau:unp-he water rise?

  Certain insects, such as the water bug, are sufficiewau+h 5q53ycp eeu2en ,ull/( ntly 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, bugenca+3ul ewelh5u(q 2p5y , /u 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 t1g nn fkp;m)c x qib3f0)wk/m9c/ bw,ihat 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 fifqkx c9b0/3cgn);1f pbw kmi,/nw )morce 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.w / .0;nifytid00 cm x 4.00 cm has a mass of 30.0 g. What if0 tii/;yn.dw s its density?

  A liquid has a specific gravity ocu1.tq;wvfpf2 5 wsj 9f 0.357. What is its density?

  A brick weighs 50.0 N, 3dlp7q ai+c1,as1kti and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a 713 ipia1d+lkscaq,thorizontal surface?

  A person weighing 900 N is stand8k3fdxzg azjf2 d17l ,ing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstandx0)sdpy*q ga 5dfx//;bw ,vpp e sp/0w at a depth of 120.0 m in the o/wqxvsp)yx 5 ,*bg0/ aef/dpd0; wsppcean?

  A circular window of 30 cm diameter in a submarine can withsta vt-zfx6-,;l 7tas0iei(nuo lnd a maximum force tes t(;, ifz oiu0nxv7-al6l- 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 absolute zdt;cj+ v220xaq 2l)v0oi axepressure is 300 kPa?

  What is the gauge pressure at a locatdp0vpsm k7m6s8 t1k . hxd8.end) 4pjrion 15.0 m below the surface of sea? (The d px8r 4hv)jmkk.0s6 .ds nmp8tp17ddeensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a loj4hr ;nbq82nm d bp*p5cation 15.0 m below the surface of sea? (The density of seawap2jbrpq 8dn mnh*5;4b ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine.7 i9i3 px jreo1xn0ky: The small piston has areen1:y30i ixjp7xko r9a $2.0 \; cm^{2}$. 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 5.0 cm and the la enum+y; bp.1rrgm+u.rn ;e yp1be 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic pistov*p6a.0l hpkm n. What force needs to be applied to a 5.0 cm diameterk h6almv.p*p0 piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its 8 ;w)i;jo ujemlarge piston has a diameter of 40 cm. The l8om;eju ) wji;ift 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 N in water. What is tyjin xp(542t31c2mqx u9ec uthe buoyant force of thee(2pt1y2 xcc5uj quimxt9 43n water?

  An object has a volu i1dt*;cn/t,vo)lr/k wg y-ujme of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is su pl:wz(;dv xq9pported by a string while submerged in water. What is the tension in the string? (The specific gravity of iro:9;(vzpxld qw n is 7.86.)

  If the density of gold 5b/bp/awy26oa m2ub dis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarinehw now**yk( 4p (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 isb u*/htw;e0i g p9c*nnlzts3* j cvaj7 2w8v0s immersed in water. What is the specific gravity of thei cvw8v*a /2lu0h7 s0j;nzsn*9twcb t p*gje3 object?

  A container of water is placed on a scale, and the scale reads 120 qe,w r kxsx ncs727+ri.yv(a3g. Now a 20-g piece ofae3 n7r +yx2 r.,skwxvsq (ci7 copper (specific 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+jh;ker my)1(baj8 q pjnswj)+gg1d ,s 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 dia z4 jt 3 .wh: iocv)fm(i50g,w;duihr zbj.ol0meter 2.0 cm will just barely float in water. What i 5jhw0(r. f z3boto) :jiwgiu4i 0d .lcvz,h;ms its mass?

  A rectangular box of negligible mass measures 5.c0 7jx 01*ly ampgg3la0 m long, 1.0 m wide, and 0.50 m high. How many kilo7ylalc g a g*3jxm100pgrams 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 9lg5x(e) n9 uui5k 8 vj5e kqvyeuu*u7volume beneath the surface of the water. The weight of the displaced water is 2000 7ku5e5*y9u9 8(uveu jelvgi xnq )u5kN. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the surmkqh;-jk,1z rface. What is jrhk;mkz,q-1 the object's density?

  A 200-N object floats with three-fourtbj8. ro8 ztr;lhs of its volume beneath the surface of the l.br;j 8t8r zowater. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is t4fyuh7z5c 1athe minimum area of the floe that will just support the bear in saltwater of spe45tfyu7hcz1 a cific 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. Find the 6hej 8jgzmda6:8t r8v3vz*mgflow rate.

  Liquid flows through a 4.0 cm diamete,oujb7 +0hp8gue .4m7ergrpa r pipe at 1.0 m/s. There is a 2.0 cm diameter restrict jpgm, r8huurpoebe 0a +74.g7ion in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a p4du zx7wg.,k 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 pums 4q0s w3a)(vbdsz(snp to supply a drinking fountain with 300 kPa, if the founsda()nqss bz4w( v 3s0tain is 30.0 m above the pump?

  A hole of radius 1.0v-:c, 1wc cykc mm occurs in the bottom of a water storage tank that holds water at a , kyc1cwvc:- cdepth of 15 m. At what rate will water flow out of the hole?

  Water flows through b4xmz carbt9d .i2l kobn3y;(tk oz:ys9)11ia horizontal 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 hqtj 4v h)0( xtzdz nl4u5*e;uPa-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 negl4ht0lzu n;*qxt 5v(e4jz uh)dect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatty tissly q9zjxqpq8/86mhsw 2,8p lque on the wall of an artery decreased the radius by 10%. By howlw8y,q/qqh xpq9z js8l6m2 p8 much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of watergp1tu: q: pyk *zlq;0afz2vn wa9g0 a,. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise i 2 pkpauqgfy*qawg1va ;t z:00z,9:nl n tube B?

  The surface tension of water isap9z ; bin1fi0g /lmk* 0.073 N/m. How high will water rise in a capillary tube of la ;fnb0m9*gkz i/1pi diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsik, jg-t(6srda3 xgqj3b7/ ig1srkz- lus rise in a glass capillary tube wiz a7( qsk- rti k,gdx36sr-j1jb/lg3 gth a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pas4w7ozy s zu29n of water, and the water rises in the tube to 4.0 cm ab4zso2w yz7s9 uove 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 0.120 m and)s;/t e ueni:v width 0.600 m with a soap film formed wi een;i)u:tsv /thin its confined 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 width 5 cm, and ic*0s4xid d o9k);we8 awb:kle s 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 0lcdbeewk;d :94s* )ixo8wak side so that the frame is 12 cm square?