The three common phases of matter kr f jq5pb8ntsp51h to6 m.gj2my/e02mphf, )are

  Density is

  Substance A has a de-bp7znhn,vhck) v gl .h5o;7hnsity 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 ia) ddqe. .10brciarm7s not a unit of pressure?

  Consider three drinking glasses.tuy,pj0u20 br 1 + 6rya8ye,zr2vhele All three have the same area base, and all three are fi0 j,bz81ayy , eeu2ry+vr0uer hp62tllled 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 glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressfs c5b*maw0z gj/hegd6(b2 u 7ures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute p/n38zs* jalm 8p ropd.ressure at the bo s8*p8aod plznr.3m/ jttom of a pool?

  You are originally 1.0 m beneath the surfhc.cgok8 u*q2p .ro ;-n1 zvrface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute prugfk2-p8*qcv .r1hr z n;ooc.essure on you?

State Pascal's princip0 f(y7c.phroc 8 6hgtple.

State Archimedes' princw1ctx g/84p5 ;d2y(-h pfkd aiivk j.ciple.

  $50 \; cm^{3}$ 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 dens5biaf:n, i;ki/md5;or ;mtid ity, what happens to the buoyant force on itdi5n;fb; i r/, dit:;komaim 5?

  Salt water has greater density than fresh water. A boat floats in bot zs kj(tscd1f;fe5) ;eh fresh water and in salt water. Where is the buoyant force greater on thtf k;1ssd 5eejz()cf;e boat?

  Salt water is more dense than fresh 0at.uix.1fvgl9mv f 9water. A ship floats in both fresh water and salt water. Compared to9g f9x0.l iu1. vvamft the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks iik+cx .q ct(am 1,m*urn water but floats in a pool of mercury. Where is the buoyant force on the ball greatu+ a.t ,cq(rcmix1 *mker?

  A 10-kg piece of aluminum sits at the botto2p .;w89ecvq o;t legom of a lake, right next to a 10-kg piece of lead. Wh c9poleo8.e2 ;qt wg;vich has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in5 l4rg -ycjg//9gktzp a bathtub. If the iron is removed from the wood, what happegrl-gj t9kz/yc4 g5 /pns to the water level in the tub?

  A piece of wood is floating in a bathtub. bzt. 5g3aue-xmkplink cj8).u4 gv:1 A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to pl1-u:g v ek 5xi).j4nktg3.z bmacu8the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at poid sinuh7g5*o ri7p5h7 f,d3mh nt B is larger than at point A. Where is the speed of the water ngr h 57,* 3ii 7oms7dpduhhf5greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the2j-k4qpt 5, zbw v cnu*dgd6(a pipe widens to twice its original radius, what i zw(av-k dntp,ucd5g4q*b 62js the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If ;hc 9tpqh t, yy(;;lkbmeyis 84ldu34 the pipe narrows to half its original radius, what is the flow speed in the narrower section?tp,tiy4yk d ;bc;y;es muhh 84ll9q (3

State Bernoulli's princi+ 6 cg 2hpk-fesb4vfx,/onf /iple.

  Which one of the following is associated with the law of conservation of ek -87xb 2nj x1cyjr;wnnergy in fl21c xb ;jrnyjx nw8k7-uids?

  As the speed of a moving fluid increases, the pressure in the fluidhidfb9 hl5i;.,+x jti1x f i0l)gwo6x

  Water flows through a pipe. The diameter of the pi 7z2 k*(vr-0pcyqdjhms o3q :fpe at point B is larger than at point A. Where is the water press*p- 3 qos rzy:hckdq 20(j7fvmure greatest?

  When you blow some air above a paper strip, the paper rises. Thi.d1hmm 2/hxpd s is because

  A sky diver falls through the air at terminal velocityfc* cw)1* hpl6 igck;(o5vlch . The force of air resistance on hi 56*c)w c1fklg l;vhph cco(*im is

  Two Styrofoam balls, of radii R and 2R, are released33gq o q3-)vohs)ns yo simultaneously from a tall tower. Which w)qgso)q 3-3v ooh3syn ill reach the ground first?

  When a small spherical rock of radius r falls throt+ czeww(+ms qjc ;sx9mq 4lk/lc(.vn.on6/ v ugh water, it experiences a drag 9(j4/6+ .c.vs/qnv( ezm knl; lwm + wcoxcsqtforce $F=arv$, 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 ;3*f pa vop7qqmo2e 8vnarrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the gre3p7*o2;8veva qfpmq oatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the .s: 3bl3xb(mktmb65 qb sqk2n*:wahx diameter of pipe A. Water undergoes viscous flow in both pipes, su2(wn:sm:qb bkakqbh3 s5 lm6x *. xt3bbject 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 the same diameter, but pipe B is xfs0ezcp/g/5 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 f/ e5/cgzsxp0the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. r7xwjd+gr9 3t This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of stayirjx wd+r 7tg93ng in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in wasaa gg 917u(mater, the water rises to a height h. If the diameter were half as great, how high would the water ris 17 g(gsam9auae?

  Certain insects, such as the water bug, are suf( t* ,t q9daqpjiyc7+bficiently 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 bugd*a 9 q,ybttc7p(qi j+ 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 )ag/awd7 2 bxubug, are sufficiently lightweight that 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 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 a/ w)gux7 2dabwater 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 vb*t50 nxlpr/6yb* zm 4.00 cm has a mass of 30.0 g. What is its zmyb *5bt /n 06prl*xvdensity?

  A liquid has a specific gravity of 0.357. What is itba j )pxf*zeile4sx5+- :z-ytx0o 4i os density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What 3gox/yywh -/hi( z m dp+se*o7is the maximum pressure it can /yye+ohxds-o* / 3m (gz7pwihexert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each sno. +6uls6w5 fn/4dudts( tnc d5mz/qmji gd x54wshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand aty yw c/fat fk,8vby4 mz/)s,rs9ha8m7 a depth of 120.0 m in the osa/ywcytmrzvb a79ff 8k)m y,s8 /,h4cean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum force mcaoi :os0u5si tsy f.144kt; mk4:i;s i t41s 0.ysu ofc5taoof $5.20 \times 10^{5} \; N$. 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 ab b-ab sfe2-nbep5d*, psolute pressure is 300 kPa?

  What is the gauge pressure at 2, ky;k7jipym a location 15.0 m below the surface of sea? (The density of seawak iyjy72,pm ;kter is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at1yg9 kkj l1+hy a location 15.0 m below the surface of sea? (The density of seawater k j+k1g9 hly1yis $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of ae .orl vh ; a pfn,d5(oce2j0a,xt92yf hydraulic machine. The small piston has areeo2l ,,h5x2r.adjf 0 ;tyf vca9on (pea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the s0 ;zwed 8b6j4 poohh5lmall piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force 8lopejw hd4hb o56z;0must 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 piston :vv 2ij7qwv.g(n:4hh e-atzp . What force needs to be applied to a 5.0 cm diameter piston to accohtpejn .vv4-zqg: 7(2a :wv ihmplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and itshjywm)/da(y.3rl7 ee large piston has a diameter of 40 cm. Te( ywe/hay 3 rjm.l)d7he 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 3. ftlr b81nm5mg;if; fnyn, 3f0 N in water. What is the buoyant forcef5f1; m ;nb.lm fg3ynf8t ni,r of the water?

  An object has a volume ;ih1r w27aavn of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid id5;lhrlzu 8gjf l -fh:(tsk;5 ron is supported by a string while submerged in water. What is thef8 hk;shrgu tdz(-:f j ;55lll tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold ie 7 j;fy1mprpm1yu9p0s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel sur x+jy fb2b-.ubmarine (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 -77b03+f+-togsvikcegf ou j in water. What isgf osgj-fb+i 7+e v0ku3t-7oc the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a /:uzh/4ju(-ot.6w mgqpxd fo20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered qowuoz /6 (u: /.tj4dpm hxgf-into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass oz3 y/2hh nlci-f 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 an hyqbok 6nk/:,m3k 0gdtuwi8j7/ 1rgpd diameter 2.0 cm will just barely float in water. What is its mas:uid j/pkhoknt yb07w3mq , 8r gg16/ks?

  A rectangular box of negligmgeg(m.:6zy e ible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loa gy gm6:eem(z.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 of the water. They9qh0j0k +7:c atso; altjs4g weight of the displaced wateoc sa4k7jhgly0 ;s +aq :t9jt0r is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of i9. 6-uyf lct*kl xx,mtkmfq7+ts volume beneath the surface. y+cx*7m.lut mq 69-lffkktx ,What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surfacr;wwrt9n*fl;w 4o yj/e of the water. What 94yo/*wrln;;rtf w wj is the buoyant force on the object?

  A polar bear of mass 200,:*)wmku hgll2 vgj8u kg stands 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.gwmg*h,u)8ll2v:uj k03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of dtd 3s-j f/.1e7.gxlv-pkswosiameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pwy )ck nadj+(+6- zl4 9kmtiqiipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in thisq+z-6t )iwn cim(k4+ja 9lydk restriction?

  Water flows at 12 m/s in a horizontaqp g(lvd+4 v tm)6n,c:dxz6 fnl 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 tor81s+d vl3mr4ec;o;hkt t1tg supply a drinking fountain with 300 kPa, if the fountain is 30.0 m abovl13+ 41tktdrgvsc e;htm o;r8e the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank thatek y.5z qi1;wb*drv6p holds water at a depth of 15 m. At what rate will water flow out of the 6yv.id51erb*wk;zp q hole?

  Water flows through a horizontal pipe of cross-sectional arpu -i;41 :e k:xxfrlmaea $10.0 \; cm^{2}$ 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. *q.s xzop:o,o -,eixv How long would it take to pour 4.0 * o:.z,eov oqxs-pxi, 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 the waeck/+xj0uoc2/b7zur t/d 7orll of an artery decreased the radius by 10%. By how much would the pressure pror0b7rcz7d// t u2koojcu +x/evided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are p*,lof ,qx)ls p hq++vgo/ao 9klaced 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 rise/pvxsoh+kl lf), +9 oa gqo,*q in tube B?

  The surface tension of water is 0.073 N/m. How high will water rixe16hb3: xuqt se in a capillary tube 6qxbx3 1h:etu of diameter 1.2 mm?

  232

  To what height would water at 0 degreas fbu2fw/(z/9,nayve Celsius rise in a glass capillary tube with a diamete ,n /bfva( 9z/wafusy2r of
0.50 mm?

  A narrow tube is placed verticallr rdkxts6q )hu8h,52hy 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 happens26kxd58 s) hrthr,uhq to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a so; bl-tsc*-n ,0 yxmrr0c se,moap film formed within its confined area. If the surface tension of soapy water isc cn m x-by;rr 0,t,s*lm-o0es 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has lengt 7 qmkty*)vb1uh 12 cm and width 5 cm, and is built in such 1 )v7qmy*bu tka 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 side so that the frame is 12 cm square?