The three common phas dx+o1v e+oh- u(j c+tcfkf9*res of matter are

  Density is

  Substance A has a density rfn9e6: c0uyh+h ppa; 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 followiyi w-v0j+w3bwtal :j+ng is not a unit of pressure?

  Consider three drinking glasses. All three have the same area base, and allxy dd)7 q-k+dz8 fnhp+ 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.) ddp+yh 7kz8-+ fxqnd 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 pre*g hjnrik0 .3bssures inside and outside a tire called?

  When atmospheric pressure changes, whap-e( -qpz j4 oo 7c1m0zpo7zrht happens to the absolute pressure at the bottom of a pc-rh0(7epq4 j7zo zo z-mop1pool?

  You are originally 1.0 m beneath the surface rbrhc2o59qr p.w4a *t of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute presbq ror2prch a4*w9.5t sure on you?

State Pascal's principle. 55xi 3bt.deme-z f)xrqof+u .

State Archimedes' pri zci03 gu9g 1yiw5h-tev+t -ztnciple.

  $50 \; cm^{3}$ 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 happensxo9cpv k)clgo 2mu1b;+ m xv;6 to the buoyant force9c xgv6oump lv;omk c2)b+1x ; on it?

  Salt water has greater density than fresbz8t,zqt seh3g k9* 5u00 vuewh water. A boat floats in both fresh water and in salt wav0,8gtbtu eek s0 wzhzqu35* 9ter. Where is the buoyant force greater on the boat?

  Salt water is more dense s d1e 9qn y-9qvt5t6,zx6 qjpsthan fresh water. A ship floats in both fresh water and salt water. Comparedq9t 1yjnq,5q6dsxept9 v- zs 6 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 of47tca5 j dht9g mercury. Where is the buoyant tcad9 4 t7j5ghforce on the ball greater?

  A 10-kg piece of aluminum sitse6 gwiz4t i2.j at the bottom of a lake, right next to a 10-kg piece of lead. Which has the greate iw6ztg. 2eij4r buoyant force on it?

  A piece of iron rests on top of a jz.ut(vcn9 r:v(jb4 *r/cz uk piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the t9cj:/ n( rbuzuc r(v.*z4jvk water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sitsze) f(55d;mbol2kq:* atjmx h on top of the first piece, and does not touch the water. If the top piece is taken off and plac5f(jheqz*a:m)2 ;tl mxkbo5 ded in the water, what happens to the water level in the tub?

  Water flows through a pi.q8m9hrz sk e0zk2uo 5pe. The diameter of the pipe at point B is larger than at point A. We r5 .92z08uqohk mzkshere is the speed of the water greater?

  An ideal fluid flows atj6;kaq1 w1c jv0q r0pnr g:bk9 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow 0c0k16v jpjrawkn:q1 r ;b9g qspeed in the wider section?

  An ideal fluid flows at 12 m/s7r,du afjalx id/n 83lce f59t6xrq-/ in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower sectioni 5 a qrjl-fd8d/63nc/9r tfxux7ae, l?

State Bernoulli's principle.p30 9a4 3 *kwqzd pgk9zhz5sdi

  Which one of the following is associated wz z5 d1w18lmjzith the law of conservation of energy in fluidwjz15l1 d8mzz s?

  As the speed of a moving fluid increases, the pressure in thehwl6oi8vx (vjh 8q)j79uau8d fluid

  Water flows through a pipe. The diameter of the pipe at zcln)t.:e jy 6point B is larger than at point A. Where is the water prelyz ct nj.6e):ssure greatest?

  When you blow some air above a paper strip, the paper rises. This isntrbdk3 t9m 0+cxvory 4nu5:7 because

  A sky diver falls through the air at terminal velocity. The force of air resinu;z m:e swtm4a9pq)7stance mw947;uaqsnpzt)e m :on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a d.ghztzxgi) iz) j79/tall tower. Which will reach the ground 7 d)9gz .zgjit/h )zxifirst?

  When a small spherical rock of radius r falls through watey/( xk h8uo1.ckyav .g0d*vbzr, it experiences a drag y.uv zv 1akodk*gh. c0/ xb(y8force $F=arv$, 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 88kfvh 4m 4j:x3orti3(w v durthe flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities belo:vh8u3xm(r d3wo4kr v8 fj 4itw, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pip 1:fgw3af c)yse B has 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 rate in pipe A is Q, wh yc1w:gs3)ffaat is the flow rate in pipe B?

  Two horizontal pipes have the sbtw*j8hys .;4g zh+mj ame diameter, but pipe B is twice as long as pipe A. Water undergoes 4wz j8; bt.gh*mjy+shviscous 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, iamk;8 71okify t often tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, 8kyk1m i7 o;fainstead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is plac2 sb iuhn(z -(mfty940p )qwdxu:jn9ied in water, the water rises to a height h. If the diameter were half as great, howzdnu):9 4xypt( nwi (q9if0s uhb-jm2 high would the water rise?

  Certain insects, such as the water bug,zfxqyy gq m1tm(xh ,*3rlp.4- 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 dimensions. That is, bug B is twice as long, twice as wide, etc. What is the weight of bug -rl *mgz 4. ,p1x3yyqt(qmhxfB?

  Certain insects, such as the water bug, are sufficiently light*yu9td7+2mp c x8yuptweight 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 fpcdm 8yx7+ u t*pt29yueet 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/drj.6qpf 9 xi;4rdcw cm has a mass of 30.0 g. What if4i6.rj wd/c;pd q x9rs its density?

  A liquid has a speci l3fni;as 56:/qu0gwtediu5 rfic gravity of 0.357. What is its density?

  A brick weighs 50.0 N7 tyhyd,dbx. h6pkk 1:, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surface?ykpxy tdk7.h, 1 b6d:h

  A person weighing 900 N is standing on snowshoes. Each snowshoe has area *pdw r,1(wxpj $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 m0413 ntebsvez)zi+h x in the o4+ eb 0xes z3)hnitz1vcean?

  A circular window of 30 cm diameter in a subb jun7-rv2pb. jo+e4m(plmw*. mwn s* marine can withstand a maximum force-vp4l*ej . ws7bmomjmrn +( w bp2u*n. 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 ifyv )8 itkbx.:oa3-igi the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? (T 44 ,7z6rsum2velu rdrqb-b 6n2.fccwkf;a9f he density6 fr wvfe6s7c;kbua n9 c.m24,2z-rru4qf ldb of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute paa(fivs k,+ 62wkxxs2ressure at a location 15.0 m below the surface of sea? (The density of seawatek+vixawss2 6 f,x2a(kr is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydrauqsytr 4 *a64iulic machine. The small pistosiu 4a4rq6 t*yn has 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 h* ) xob3gfouqx 6*rad)as a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small piston in o)xg6 afx* oo3brqud *)rder 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 diametu+zcp76a w,ju)ct t w/er hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accom+,t 6 )jazcptuw/ 7wucplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its (x i/(6+kbf *sn8sb fdqj rzj-large piston has a diameter of 40 cm. The lift raises a load o /ni+qs8r-b6jzk*fbd(f s(j x f 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 the6jgv9 tbs;j+ d bm;*gl buoyant forc jmdljv s69g*+ tgbb;;e of the water?

  An object has a volume 0v7yve+4r coo4 5xl neof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a aa1ic r)1 /5cgjwet/0eebajx.f,w5 k string while submerged in water. What is the tension in the string? (The specific g/g1 f w exa ta5j ,0)ajbk1er5i/ce.wcravity of iron is 7.86.)

  If the density of gold is na sdm4687pr(x*c ipp8mnlj, $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submjyw.,w6vf4c vao+jkn+zw2 n/ arine (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 wateicdlsi --m9ranpl 3;to +u8ip atq9xc)f f8(6r. What is the specifiam l8r8qc+p3 fspi i-- cd a i96;t(xuo9ntl)fc gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a errs.e)7pgi * 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowe g.rpre7i s*)ered into the 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 zffk. ogyfvxkp 3ljz2wt)51i(233km 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 anx r.toe9 97zuvd diameter 2.0 cm will just barely float in x.t 99or u7vezwater. What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and/int vpf0-i-gha- n3y 0.50 m high. How mang 3ft/n-0h aip yv--iny kilograms 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 volume beneath the surface of the s3pzw6rv (35va5nw,kz ub p:n water. The weight of the displaced water is 2000 6 nw s(r,v5awz3pn3kvbzpu5 :N. What is the weight of the object?

  A solid object floats in water with three-fourths of k sg*c8e unq6)its volume beneath the surface. What is the*g8s ) ckq6une object's density?

  A 200-N object floats with three-fourths of its volume beneath the surface of -0 . cleuy6kftthe water. What is the buoyantut 0-6keyf.cl force on the object?

  A polar bear of mass 200 kg stands on an3di*z6ilf1 hw o;0v mv ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specifich m3l 0iifwzv1v6;od * gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pd,j dze*z1mg)j8 ju1 pkfdz0 .k 90ho)j. toqyipe of diameter 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 cpkk,n6 .vbx3w3de q k93a ce og:2sjj6m diameter restriction in the line. What is the v3c6j bos3kdeka :njekw x6.v2 p3qg,9elocity in this restriction?

  Water flows at 12 m/s in a horizontal piaaevd g,u a)wqm gcggo88,/yh15h7 4s pe 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 doesz5q mx7r ljfr3j4 ,pzd*8ew w- it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above th4zx, wl7pmq5j zdj r*8 -rwfe3e pump?

  A hole of radius 1.0 mm occurs in the bottom of a water stor /1q p0q)imeigage tank that holds water at a depth of 15 m. At1/p)iq m0geiq what rate will water flow out of the hole?

  Water flows through a horizontal p0yvs iam:g,x-ipe 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 Pa-s. How long would it t:eryy.jgm4 n9rr5:h 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 9.ghn 5my:tr rjr4:y e6 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+m3stq lrd65 g the wall of an artery decreased the radius by 10%. By how much would the pressure providedr qd3t6+5 lgms 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 has twice the diamqq-z1 e1 hukx7eter of tube B. If wk z ex-7uhqq11ater 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 will water rise in a capighx)p3c su(mv;cv3 5pllary tube of dia;h c s)3(pvg5upxmv3cmeter 1.2 mm?

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  To what height would water at 0 degree Celsius rise in a glass capillary t e n)k4t/flj 12t ,j9p4pj 9sejy)chhkube with a diameterf/4 9hh jye)ttnsk cl4 kjep9jpj1 ),2 of
0.50 mm?

  A narrow tube is placed vertically 9+ aw+o1rmdelbt .sn,in a pan of water, and the water rises in the tube to 4.0 cm above the level of the pan. The surfacdte+o . 1n9mrb sa+wl,e 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 width 0.60gg 0y1c*i8*nzmlny,f 0 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.020 *mgcglin yyn1f8,*z60 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has lengh1.m e:b5 zpdtxr+ 6ebth 12 cm and width 5 cm, and is built in suc. + ebze1rdptm5b6:hxh 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 side so that the frame is 12 cm square?