The three common phases of mattbf5ftm c,y*h ah;dk;6er are

  Density is

  Substance A has a den;4e x70w 1i5ff/dfrhwjx gy9 osity 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 p ,h//yj 54 bfz)cz7krg5absf bkrv/: gressure?

  Consider three drinking glasses. All t:dnem5xb6a2 dhree 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 tdnxm:ab2e 5d6 han 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 betwe3np s 7aui ea(y.cs+7qen the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happz9um 36bw gfd;ens to the absolute pressure at the bottom of a p 6 md;guz3fb9wool?

  You are originally 1.0 m beneath the surface of a pool78 ypya-vrm7 o. If you dive to 2.0 m beneath the surface, wha7- prvyo 8ym7at happens to the absolute pressure on you?

State Pascal's principle 6a3+icvc mei qt2)ty/.

State Archimedes' princiufw8.n n:6 z2- gygoacple.

  $50 \; cm^{3}$ 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 q 0u,2pjiksv ;constant density, what happens to the buoyant force ,p2u;ksjqiv0on it?

  Salt water has greater density than fresh3o0g2 yxcuo5*b7ahnq water. A boat floats in both fresh watexh3qo7 2ban0* 5 cguyor and in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. hv0)z-kv/zglw j5 /h4meub - w A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water vwzumb4/lj5 gvk whe)- 0/z -hdisplaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury.lz;: 8xz * ue,lww-e nxhiby33 Where is the buoyant fo,nhluzyzlwi ;e-8bw*3 x x:e3rce on the ball greater?

  A 10-kg piece of alu1dt;jik 5o71(y rh3qqvkv7 zp minum sits at the bottom of a lake, right next to a 10-kg piece of lead.; k171kqpiq vor3 75j(zdthv y Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of woox 1rc*;ik1nw+gs qt +dd floating in a bathtub. If the iron is removed from the wood, what happens t;qwt*+ri nk gc1+x1sdo the water level in the tub?

  A piece of wood is floating in a batht2iwmej4.o z; e41hpujub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piec zjh1o;2m4pe4.jiue we 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 Bz,rf:i z5:l5 eiub1oy35g pf2riht d+ is larger than at 1zdy,i2r53 :uz:ib i5 +teg p5orflh fpoint A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizonun1 l5.fz ca;ntal pipe. If the pipe widens to twice its original radius, what is the a5c1.zlnfun ;flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. I3 ikm:o73 dumnf the pipe narrows to half its original radius, what is the flow o di7k3nm:um3 speed in the narrower section?

State Bernoulli's principle.ofa3-m(wlxb)5;vs if

  Which one of the following is associated with the law of+s8s;hc m4 lyv*-wokp( z bz2d conservation of energy in flu l+-z vw*b4sc;z28kmh yso( dpids?

  As the speed of a moving /g,xw glo.ko1kb t+(wfluid increases, the pressure in the fluid

  Water flows through a pip( zvk5 qn ciw.b,o0jx0e. The diameter of the pipe at point B is larger than at point A. Where is the water pressure great b. 5(vq0nij0o,cxzkwest?

  When you blow some air above a paper strip, the paper 7ri2n +jzzn8iu 21nzrts+ 0ierises. This is because

  A sky diver falls through the air at q9- rv5 f1uv*c3svsv bterminal velocity. The force of air resistance on srfvu vbv3v 1cs5-q *9him is

  Two Styrofoam balls, of radii R and kl fzf**5 lf xd,hupu0).fqw, 2R, are released simultaneously from a tall tower. Whic, uzw fkl,ffqhd)x.5u **fl p0h will reach the ground first?

  When a small spherical rock of r25(rdie0: .(f; caqxjn po;q qtst*tradius r falls through water, it experiences a drag for20;dj(a *qqrc qt5 in:f opr(etxs;.t ce $F=arv$, 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 narrow pi6 ekb) 33jwelmpe? That is, if you made a 10% change in each of the quantities below, which wou3lebw k)ej3m6ld cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipi7g3t zc q3cr,e 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, what is the flow rate in pipcq7it,3 z3gc re B?

  Two horizontal pipes have the same diametee:6l;jk8 vgz1zoijg-r, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subjec: 6jl;gi- jo1ke z8vgzt 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 "g3g5-c k9 m ccl6qcowf5reasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is 5cg5-ol q9cm6c fcwk3readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to a hq*9b +v2 xyf (*ztuahweight h. If the diameter were half as great, how high would the watyuqza* v hfxt2+w9b* (er rise?

  Certain insects, such as the wcgb 96f/nafo- ater bug, 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, twice9go c nffb-6/a as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that thexuxaax;i ,d c44gv .m1- mft(ty 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 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 maximucmda- ,.xug mx(t; 4 i1fxva4tm upward force on the feet of bug B?

  A plastic block of di1a.q-az:jo lkmensions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its:a oq.z jkal-1 density?

  A liquid has a specific gravity9uk)l t)wea9,a5 +wc-uxpa q g of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.px)0wki l 0iu30 cm x 10.0 cm x 4.00 cm. What is the maximum presspx 0 3u0il)wikure it can exert on a horizontal surface?

  A person weighing 900 N is stag :prfz* 5nlsdn4n8 f1nding on snowshoes. Each snowshoe 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 m its2f *g- l.d.uda8 ocg)0 3ws.r fnff ,nrzl.fn the oceanu.8..cl)r rgft s2d gofa3l*n0fwf f n.dsz,- ?

  A circular window of 30 cm diameter in a submarine can withstand a maximum foj6 btm3fgk2aej4i z:t788f em rcejj8fg78efmbt6t a :zi4emk2 3 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 prmhf/yx4(a uka d.)*nc essure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface95.f dyfz d a,.armsf5 of sea? (The density of seawater mf9sz dy .5afaf.r, 5dis $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressuc5:ei ooh8by 8re at a location 15.0 m below the surface of sea? (The denho5i c y88obe:sity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic mawnbe u671:ybb kg,* e98-cbxpfc/bcychine. The small piston hase e9k,g* byx:ypc/7 bbnb8wbc6 1c-uf 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 radius of 5.0 cm an y utz:y:hsv72d the large piston has a radius :suh vytz27:yof 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 hyd+jd-vtold5) graulic piston. What force needs to be applied to a 5.0 cm diameter piston to accompl)+tv5ogd jl-d ish this?

  The small piston of a hydraulic lift has *c-4szs6n zb. r uyju2mzp9vz pho+96 a diameter of 8.0 cm, and its large piston has a diameter of hzpm9.uobc v6z +ss-zrp2*y6njz 4 u940 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 30 N in water. What is the buoyantb;t5c+ky 9vjkk gig;nj ,gd3lb i93m9 force of thekjb b vg39dg9m5;;jk9+3ygintck,il water?

  An object has a volume u1: urd,zjt)clt 77ip of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder or;aw,j f(of e;lgsf,io7, q6nf solid iron is supported by a string while submerged in water. Wh, fjefoiq; r7osa6,fg,w(nl ;at is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold n une/ w 7y 38dzyr6c*y:vfjc8is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subma hg l-6e:w ++m /iwl-hpp0mmturine (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 airy81 r bez: gkn/;by4s2g/yzhq and 6.86 N when it is immersed in water. What is the specific gravity of t 4 ygsh8gr b/ zbk;12/:yzyneqhe object?

  A container of water is placed on a scale, and the scale rlfsir3*h bdv e 1v),d5eads 120 g. Now a 20-g piecebhl 5r3dd*v ) ves1i,f of 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 mass of 1.0 kg and density bxe22+s smndi,(2 y)oqyy:cd 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 cmsf.m0x 3l nn3-/i q(knjk /xax will just barely float in waterk// m0ln3kx(3-x.qixfs njan . What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0:mj:o+y f ,daxsdku12 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto thf:dkm +yj x1a,:sdou2e 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 withn9+3vrb ojob7 +1(gsv( dkrbe half its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the wo7eb+3rob+d(gs1 jvnbv r k(9eight of the object?

  A solid object floats in water8p4 lxd mu6nyl qg4w-+ with three-fourths of its volume beneath the surface. What is the obn4dlyq 4x- +6umwg8p lject's density?

  A 200-N object floats with three-fourths of its volume be ly cux(; *fzvo6h)zl,neath the surface of the water. What is the buoyant focllxhy6 *) ;zzvo u,f(rce on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is 8i (dq- ysqpj4the minimum area of the floe that will just suppop4 qydqjsi8-(rt the bear in saltwater of specific 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 flow r w6m 0jzda86)+nfntekate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s2m3l0vuvgtb:sh r* vq.n ,zd0. There is a 2.0 cm diameter restriction in tvs30dg.*r b hu mvq0,tnl:2zvhe line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizonp;ei7;d rpxc45d*iap :ghm* ktal 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 to supply a drinking fountain 0mdf0q4bm yr )with 300 kPa, if the fountain is d0 )yq0mm f4br30.0 m above the pump?

  A hole of radius 1.0 mm occye )eo(10kta:is5hjo urs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water fyeei 0 o(k)sjt1 o:a5hlow out of the hole?

  Water flows through a horizona/h 423tprz os2uu z)qtal 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 oimqldpu ; p37efqpe 8)0b p1d 6wfi2,Pa-s. How long would it take to pour 4.0 L of oil tbe1poeff 6w0;i 28u ip pq3)7lpd qmd,hrough 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 tis7hy(a/neooe5xu1h z 6sh9r g3sue on the wall of an artery decreased the radius by 10%. By how much would the pressur(3ao9heur/h sh 75 6gz1oeynxe provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tubz )brs*atb:d 3p2;he +fxkw3 we A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it r 3b)z*h:fk+rww3a be dptx;2 sise in tube B?

  The surface tension of water is 0.073 N/m. How qn )j3prf l82ihigh will water rise in a capillary tube of diamete28 )njqlfp3irr 1.2 mm?

  232

  To what height would wate7)3/q .ips)f qdark ukr at 0 degree Celsius rise in a glass capillary tube with a diameter 3. )qs/uakfd q7p)kirof
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and thejcw8sa 4c*2us 7 lh7fu 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 happens to the height of the a2c 8cjwflh7 74u* ussliquid column in the tube?

  Consider a rectangular frame of length 0.120g.)* k wt-vmqk m and width 0.600 m with a soap film fmgv - *k)ktqw.ormed 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 the 0.600 m side?

  An adjustable rectangular frame has leny ic/g nx rj dam*dp.l1;5hc5 d 1e3ps-4vy,oegth 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 containe/ ;j ag5y*.hoe4r 15,mylsd dp3cd e-cnixp1vd 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?