The three common phases of ml gsvoa9-j7j z h;2y8nczk:i q.ia ;9uatter are

  Density is

  Substance A has a densipt:jj2l v8of g025ra 7tm.qzpty 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 a unit of pre9 m:rzev*4uvv ssure?

  Consider three drinking glasses. All three hayrnh ,b1q *01i(n:kvw2izuv wve the same area base, and all three are filled to the same depth with water. 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 glavn wwkuby hq:in ,r1*2 (z1vi0ss has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outsi )qvk4 2z7paddvl *1z0sau3ip de a tire called?

  When atmospheric pressure changes, what hcq/fyxl3 d*i6 appens to the absolute pressure at the bottom of ai/yqxld c 3*f6 pool?

  You are originally 1.0 m beneath the surface of a pool. If you diveq*1zad+r x5 *qu1 pzxx to 2.0 m beneath the surface, what happens txaxz+x1 d5*uq1 p*q zro the absolute pressure on you?

State Pascal's principleob*gslhj 8;j,n3h wo u5c3) xa.

State Archimedes' principleqfdv9*,5 y5 hn tsou4i.

  $50 \; cm^{3}$ 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 wh ,/gu j, qs,2jup.degater of constant density, what happens to,/,j2phgj.u , eg duqs the buoyant force on it?

  Salt water has greater density than fresh water. A boat fl ov. t. in:bnf5*l4cqkoats in both fresh watno.lnbt 4c:5 k.qvf* ier and in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats tz /2t.3t:9: stw8hsmyhqxbb5uwn;hin both fresh water and salt water. Compar:x hhtyw;ntbt/b : t53z8.w9um2sqshed 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 m6dbypz:rk5) l ercury. Where is the buoyant force on the ball grrbd5)zkp :ly6 eater?

  A 10-kg piece of aluminum sits at th* 8ygbqam*6rr e bottom of a lake, right next to a 10-kg piece of gr8mbqy ra6 **lead. Which has the greater buoyant force on it?

  A piece of iron rests on top ohuce,xy(2p ;aoqkj)t/-hq; q f a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens t 2) ;;etjxocyp,-qqq hk(hua/o the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top oby ;m08c;alncc0 gl r3f the first piece, and does not touch the water. If the top piecyc 0a cl;b803 m;rncgle is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipeuo95)jd jsfmn2j7ue;7xy8vu . The diameter of the pipe at point B is larger than at poi fvymuu787onjje5x ;) 9juds 2nt A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe wid6*zczj7 *kmjv kp-z5hens to twice its original radius, what is the flow spz5cvh-* zkm z6k*jjp7 eed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to k*iaihv. 157 jfan.oghalf its original radius, what is the flow speed in the na.a hij5ank1gio . 7fv*rrower section?

State Bernoulli's principleb n i(pw5d3,q )1ujglhi -pr3f.

  Which one of the following is associated with tx8jr6gj88mndnna1,a-d sq - c he law of conservation of energy in fd81rsqmxn- ajca-j6 n 8d8n,gluids?

  As the speed of a moving fluid increases, the pressure in t -2ajlx l ,2;nbs*w113r nyytvd3qclche fluid

  Water flows through a pipe. The diameter:pjr089*p e ap6oag ai of the pipe at point B is larger than at point A. Where is the water pressupr* ppag 9oe0 :aij68are greatest?

  When you blow some air above a paper strip*xu )czr2jkyfzqm( 50 , the paper rises. This is because

  A sky diver falls through the air at terminal r2k d wiq.58iwvelocity. The force of air resistance on him isi.5ikrd q8w 2w

  Two Styrofoam balls, of radii R and w xau m,*ch a0k0kx5z32R, are released simultaneously from a tall tower. Whh ka ,ac0m *x5wxukz30ich will reach the ground first?

  When a small spherical rock of radius r falls through watb2oki 0 f2udu(er, it experiences a drag f 02ibd2 ukfou(orce $F=arv$, 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 ef5 q)n7jty7xl b*b)cl2m(u 29h-ky yuq-yw um yfect 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 greatest change in the flow r77qyb* n5y)tb9ukm --l h x(uwj2ymy l)cy2qu ate?

  Two horizontal pipes are the same length, but pipe B has twice th7:fdh84 vmab, v -nkbyh2r 3wze diameter of pipe A. Water undergoeh4 kwhay-b2,vn3b r mf7z:8vds 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 the flow rate in pipe B?

  Two horizontal pipes have t+ea 1:q2qg0kh(k lh*hlq k, fehe same diameter, but pipe B is twice as long as pipe A. Water undergoes lkqh+flhk2e kq*g, ( q01hae:viscous 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, i,58ookj xk 0dk vqvzpe:u4+8ft 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 globopuv588q, kvj f0kx4z e:+dkoules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, th)vrov-3h2 omb 0r+fzi t;l7ine water rises to a height h. If the diamet0oz3ii+vr) f r2bvln tm;-h7oer were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently g q4ceo8 -iw0/pb m/nvlightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B is q0b/opv8 ge/4m c -wintwice 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 dg:sp4ll5 wr2they 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 u2 gd 5wp4rls:lpward 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 x 4.00 c u6,s6 biggwylzx0oav6.ky6 8m has a mass of 30.0 g. What kyoa6,6 v6gxbu yslg6 0z8w.iis its density?

  A liquid has a specific gravity of 0.357. Whle65kamzt,4 eat is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What g zfh r c2fy;jqbahi32:xn13 9is the maximum pressure it can exert on a horizontal sh3cf 93n2 i2 xja;1bzf hrqy:gurface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe mgr+pg ,7ik9 +wuv e/bhas area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolutc* s38wxlwrz *e) must a submarine withstand at a depth of 120.0 m in the oc *xlwzr*c w3s8ean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum5*f ug * yarrn4wcj8/4d+rlrv force of vj n/5 r wgrd8fcr*y+a*4 4url$5.20 \times 10^{5} \; N$. 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 3007 hqffbg++p-4;hox.klsp f:n kPa?

  What is the gauge pressure at a location ljw)a x u+w,wnzqhhh21jk (6 /b1+uzq15.0 m below the surface of sea? (The density of seawate1, ww2hz1( u )+xh/l+bqzqnjk jwa6hur is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a l u 84b5k,nzrfdocation 15.0 m below the surface of sea? (The , nfru8bk54zd density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston19 1kezo ed 7r, cnwvzxg11ob0yw *a(t of a hydraulic machine. The small piston hadzw1g w o 1co0yn eerztk7*va119(b,xs 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,pxk 9y- lzj9o radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small pistonx-k9yz lpjo ,9 in order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by dnjny m6 9hlk9(ej 8u5a 25 cm diameter hydraulic piston. What force needs to be dkeh (jl9n689uynm j5 applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, afzngb/sl+.n)a0 w: xtw qux /4nd its large piston has a diameter of 40 cm. The lift raises a load of 15,000 N.s0n x)b :w/na/4.w+gltzq f xu
(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 h cl: 3+br q92p3gpmxust+ol; force of the watertx:g++qpbsl9lcm3o2; 3r hp u?

  An object has a volume of h r t0*dn b/7cw0 rrr)/msh+xc$4.0 \; m^{3}$ 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 in ww3 2k- 58hrq rlh)pacxatercql3h2-kax hp)r w58 r. What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is mt25 9:oi:ncg wvyb; h$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submhfva / hw/h bfn.5,0yilsfa1j) ;q/i carine (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 in wate 8 g1lhas4ul-gr. Wu-l1g glh s4a8hat is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Nns;u8i:kr5 bfb a++xt4jrwz k5y2ld6ow a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into tirtb8n:ra+u5k+6f4yxjdk bs2wl5 ;z he water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg and rb -r6pnlvd78density 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 jusw6 (k:tzl9c;7w gxiun t barely float in water. What is its m:nw ci6k ut;x9z7gl(w ass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0oxcu1tq /b4w7 .50 m high. How many kilograms of mtcb/ 1 uxwq4o7ass 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 of the water. The weijf 2wn ,td oh60ui7sm6ght of the dh6w0it,2nuso d6 mfj 7isplaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its vol: m: 0pd3dug x6* ence)+ilapxume beneath the surface. What is the object'lu:e p*m a6cx :0+gdd)ex i3nps density?

  A 200-N object floats with thr-t53lvg xdxuz(8sa 8p18n )vnvm z: ayn5krd 3ee-fourths of its volume beneath the surface of the water. What is the buoyant forcev v: (8v33rs 1adxu5nnl xgk-na8tzpz)58 dym on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What p 60 igbl p(t,i:c/+ u4iwn:y l ptl*tl(bk8umis the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity o:y lu t i0+ unm4cb itp*lp8,(:lp/w6bki(tlgf ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cmh7m* ( ej8xyxhoi(td0 at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm dbpvjsdv3 ) +.a2am4by c+dts1 iameter pipe at 1.0 m/s. There is a 2.0 cm diame 4dpv3byjsamt dc2+b) s+.va1ter restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horo91ar; bgxwmc4hkn 67izontal 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 doe)c-cm9kmm2h qx h1k7zs it take for a pump to supply a drinking fountain with 300 kPa, if the fountain k7 c-m912z)chm qmxkhis 30.0 m above the pump?

  A hole of radius 1.0 mm occu3mhk(wfskd-6(o/ (n /lvp eo: dsodd+ rs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of the hk( f(d 6s(ld d /do3 :/swo-mhvk+noepole?

  Water flows through a horizontal pipe of cross-sectional area cjmb/b(bj p zik c0t,ey..8)z$10.0 \; cm^{2}$ 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 viscositqzbi7 *v,/ )ty2+ slv epvunt4y of 0.20 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 b , y* tvq+tz4v7ue2/lvnpis)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-uptukox -dq. )l9 -rr(pr of fatty tissue 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 constant blooxq-- l .()pktrorr9du d flow?

  Two narrow tubes are placefw fb ;w3al 8d1ukcb+5d in a pan of water. Tube A has twice the diameter of tube B. Ifb;5l3f 8b1fawcud+kw water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high wauak w41i:vuv:* 0ghzm -0ks : veixhhg2 i*f)ill water rise in a capillary ti*hh01k::x au gv u)ii* 40emav:-h wfgz 2ksvube of diameter 1.2 mm?

  232

  To what height would water ap zekz,w+a:d ./zhbk46 gt dj.u6v4ku,dy9mpt 0 degree Celsius rise in a glass capillary tube witp,zd/ zbme4k y. :w6dgku k,zv+autj .hdp469h a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of watertb ),i31qi4mu w* dmgo, and the water rises in the tube to 4.0 cm aboveud b3o mi) wm*4qti1g, 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 fra+uvv-4w -d1+zip py sbnn2uw+me of length 0.120 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, + nbni-pv+-u+p1v2 wz 4sywudhow much force does the soap film exert on the 0.600 m side?

  An adjustable rectangula-blom7s,. nz 8k09ys ew a0qqpr 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 frl09.kn,p oyqz-a8 m0wsqs 7ebame. 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?