The three common phaseskgaxh.fxke):t qdbr k4:2r* / of matter are

  Density is

  Substance A has a den0e pfopp5(qfsj 4 ;m)8: z)v tkpny3kusity 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 pre+u benud,ls;e/u) 8xr ssure?

  Consider three drinking glassesy/.p bdyca cj2 c)4j6thdj; 3j. All three have 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.)dy/yhtb 6.c4p cajj j;2jd3c Which glass has the greatest liquid pressure at the bottom?

  What is the difference betweeq7ppy9w c /ucbj0:a- cn the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the abko4o 4 opr)a64zzmb) lsolute pressure at the bottom of a poopmoa l44)64kb r)ozz ol?

  You are originally 1.0 m beneath the surface of a pool.vp9 ckgf, ba zm1q63ge0d*6 yn If you dive to 2.0 m beneath the surfaeyn d,p6z 1m*q0k63gcfb 9gva ce, what happens to the absolute pressure on you?

State Pascal's principle.hxi3 :rrecj7;

State Archimedes' princip7 5jsjpipm u70le.

  $50 \; cm^{3}$ 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 of3)mu/ mp4ea fs constant density, what happens to the buoyant force on p/me4s3)am fu it?

  Salt water has greater density than fresh water. A boat floats in g/tozi6j em:1 both fresh water and in salt water. tm 1jg6oe :z/i Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh wat -bn*1bfktyx7er and salt water. Compared to the fresh wa1tf* xnyb7b -kter, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats ehv;bx (f k3t9in a pool of mercury. Where is the buoyant force on tf ehvk;(3b x9the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg pisdbo.7ae29kb. g1 pdj) hx 4s- pmdwh:ece of lead. Which has tp.obpg2 jh9dm )x-d.a:s 1kwed7bhs4he greater buoyant force on it?

  A piece of iron rests on top of a piece of wog0.x7fic nnxd:h;6 mqod floating in a bathtub. If the iron is removed from the whnnx0iq.; xdmcf 76g :ood, what happens to the water level in the tub?

  A piece of wood is floating i(8gwnisw8a 9hq8- ahel+1n ebn a bathtub. 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 the water levelsih g9a8(wn8q -+h ew8ebla1n in the tub?

  Water flows through a pipe. The diameter of the pipe at point B is laq+2 h abyb6mpc- r2hhz25jst:rm2k ;frger than at point A. Where is the speed of the water great2mqta zhyc5h:k f r2 m;j rbh6+s2b-p2er?

  An ideal fluid flows at 12 mk1hu/ypayb 55t 3+vjv /s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wiv13u bt apy y5hvk+/j5der section?

  An ideal fluid flows at 12 m/s in a horizontal )me1cp*q l8rzpipe. If the pipe narrows to half its or)1*mq p8 rczleiginal radius, what is the flow speed in the narrower section?

State Bernoulli's prin/qesu rzce zu);72i;iciple.

  Which one of the following is ask/9eu hei3jar;3qm 0esociated with the law of conservation of energy in fluk9 /uemq;ha3ir 30ee jids?

  As the speed of a moving fluidukandrhr/+ ;l-we6-j ) arp3i increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B ilgo;5*l5wup ruw 1ty3 s larger than at point A.wlu*;wp5r51y3gt ul o Where is the water pressure greatest?

  When you blow some air above a paper strip, uf,z) -c6zwsu the paper rises. This is because

  A sky diver falls through the air at terminal velocity. -1mp 9 ifqv6ymThe force of air resistance on hi1fymipm9-vq 6m is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from s,)9uu: hmkkna tall tower. Which will reachk) 9uu sn:hkm, the ground first?

  When a small spherical rock of radius r falls through water, it experien :th. uhmsgb3o p ybhnj(*yj oy-;17o3ces a drag fhmyo( 3s u.7hoob;g -hj:pyb1ty*j 3norce $F=arv$, 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 fd1 irny(-qy. vluid 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 -(rqdynyv .1i flow rate?

  Two horizontal pipes are the same length, but pipe B has twice thexs 4q;s.faj,e diameter of pipe A. Water undergoes viscous flej .4fq;xs sa,ow 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 the same diameter, but piv1 5ww/xmpju xd.du )0pe B is twice as long as pipe A. Water undergoes viscous flow in bdum5 u0vw/dx.jw1)x p oth 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 "g d8ya mg hutc5a9xv187reasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikerxvu d5ht7gma a88y1c 9s", this is readily explained in terms of

  When a tube of diamen13bqvyk/ u;c qk3ch- ter d is placed in water, the water rises to a height h. If the diameter were half as great, how high woul ybuvk3kq cc/hn1-; q3d the water rise?

  Certain insects, such as the water bug, are suffici qe8npu9l+ aeq t;ez4*ently lightweight that they can run on top of water without breaking the surface tension. n ;l+uz4qepat9 e*8eq 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 is x; ,y 7kurks9q2uo4 lb4k(xbug, 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 feu97; 4,lsu4bx kir y2okxk( qset 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 dimensiiq; f. hbb el+h6)my7lons 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its denslbe;)6. hy7m hiq+bl fity?

  A liquid has a specific gravity of e4vs- m yv9uo+0i fnr/0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 a vf3+sptnaoi/5i- d9cm. What is the maximum pressure it can exert on a horizo ioi-/95sfdtn3paav +ntal surface?

  A person weighing 900 N is standing on snowshoes. Each snowsa *or2wap/ev4 hoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 mqv,n+ q/y+goi in t i on,gqy+qv/+he ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum forceg9.rynx tj3pj*n2e3h j pjt33xr2h9ey.*n gn 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 pressuh nm4w7g fi, 1)okbp) 8ju*v1wtk/jcc re is 300 kPa?

  What is the gauge pressure at a locatiopa t0oraf+e:z 4 j7jh3 e9r7ofn 15.0 m below the surface of sea? (The density of seo a4ejz :j +ehr3rtp0ff7ao79 awater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure /ak+loz 3p- nk-dxnw8l,t;peat a location 15.0 m below the surface of sea? (The density of nnklp /-,l;et+ -dw3okzpx a8 seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydrauh 7* (/l9bi fc:zadvgrlic machine. The small piston has areav(7:dghca *frlb /9zi $2.0 \; cm^{2}$. 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 *goi3qiv7bm edh)8s:5 gwa8* gzagk t.sel8 *the large piston has a radius of 15 cm. What ash.88ag: 3zglbt*im8qdwg vik e) 7s*5ge*oforce 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 ip00ie./kiqi piston. What force needs to be applied to a 5.0 cm diameter piston to accomplii .q p0/iei0iksh this?

  The small piston of a hydraulic lift hu kbfo//f5o:i as a diameter of 8.0 cm, and its large piston has / fkoiufb:/o5a diameter 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 :h 97 eciux,aa30 N in water. What is the buoyant force of t7:9iu ah aecx,he water?

  An object has a volume ofu:qh)+t - ygxf.ubwv6 $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of jjfi/l7;j8 rasolid iron is supported by a string while submerged in water. What isaf7i;/jrj j 8l the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold8 3ebuzm+3 9 4pbszj2iayj6h .q9rtty is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel su5 n4ci 9g)hr kyw+ rbfe;2cjnja))p,vbmarine (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 7.84v)ry fvg3i4f 5yoe+8k N when it is in air and 6.86 N when it is immersed in water. What is the specific go )kgefivyy4r5v3 +8fravity of the object?

  A container of water is placeytm)tk i h2 ,gc4e a+4r.jjlm8d on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not tk4raet.im2 hm,4 +j cg)t 8jlyouching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg wi u)1pry* n(wo7et;hand 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 judpz2s6b8gu8 i1 pi x:mst barely float in water. What is its mas1 sim6pp db8gu28:x zis?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, *qn0ljw3d3+w f6fk.xp s f5vcand 0.50 m high. How many kilograms of mass can be loaded onto the box befw qfc vw*0j6klnsp3+f d5x3 .fore 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. Tt;o.wh 8i /ch)seo g6whe weight of the displaced water is 2000 N. What is the weight of the ob)/w;i 8 owseochh6tg.ject?

  A solid object floats in water with three-fourths of its volume h9+ q 62:u7ycvvkfzjp beneath the surface. What is the object's d7jy6q 2 :+pvu kf9chvzensity?

  A 200-N object floats with three-fourths of its volume beneath the surfacoq:/ 6ktgt.dl5 +xxkye of the water. What is the buoyant forkg tq6yx/ od t+:l.5xkce on the object?

  A polar bear of mass 20 0kihk usw 2j)o;+:(l djexbsc6 xeg960 kg stands on an ice floe 100 cm thick. What is the minimum area of the ek+ wbxek 9l(; c 2i6oshxjdj)g06u: sfloe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of dia+.,tx cqaztgw* mpw74meter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm k q0+yb a-/zk/y a;nn1zjuyp.diameter restriction in the line. What is the jy/pyy-b/ a aq0 ;+.n 1znuzkkvelocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wit0zyf2k e,yol1q 3w b(/j nht*c8f9 xzyh 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 py 5j fh*uy7papm;y)9nump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above um5y jp; 79*nh a)yyfpthe pump?

  A hole of radius 1.0 mm occursi0-2bel :imly in the bottom of a water storage tank that holds water at a depth of 15 m.i-leb0y2mi:l At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of3ka. g - 9ck frv2ge:et fjuppk5g*.x/ 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. How long would it take to pour 4.0cmm73m1y ;1bfqiu.hn19 ah z p 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 th9hhp ;1 mqiyu3n11a fcmb.zm7 e neck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatty ti2/)wq q4xfjblssue on the wall of an artery decreased the radius by 10%. By how much woul42jf) q xw/qbld 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 water. Tube A haser3*0f ds+fli ;or( iqfu)8ip twice the diameter of tube B. If water rises 24 cm in tube*+u 8 di0rfpq(s feilf) r3;oi A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a capb5s xp)t n5p m;ils04pillary tube of dia p4t x s0mns5bipp;5)lmeter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise ip0h81uw ztv ,c/2xelbsd b8o8n a glass capillary tube with a diamete/h18p ult,ox vb088szwec bd2 r of
0.50 mm?

  A narrow tube is placed vertically in 49 5:j,yydnt (rmm5o vdxq;x38zcbjpa 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 happensdnx3dc59b,yj 8p(xom4ztv qyj: m5 ;r to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and wi5tqkl ;5 6ai3nxrg.za 1t:kin dth 0.600 m 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 tha1i3kinxtnl t g ;qa5r6k. :z5e 0.600 m side?

  An adjustable rectanko 5n(3 ot 1dvu..rpocgular 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.531rdtpnuo .co(vk o 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?