The three common phases ofy8 lvp f -;stc-s,5;+zmounp u matter are

  Density is

  Substance A has a dehpx4lgcc ph.ny et2c) k6ik5r 968ag* nsity 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 unim aak31g -r.jb*x3c8aay wb,oqc,d,n t of pressure?

  Consider three drinking glasses. All three have the same area base, and lx.w+jo8t :zb g9j9a9cq/ds;k3orif 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 moz9o:r+t q x;ajjc ki b39gwsd.8lf/ 9ore 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 betwepltt (g)e-;egen the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at the d:lh -5apmq2w bottom q5p- h mwda2:lof a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 22 n zql4ar :1 +wy,uaq1ogp*xy.0 m beneath th :1ny4q+pzrquaglx12,y* o aw e surface, what happens to the absolute pressure on you?

State Pascal's principh. pk2)jduk98k)hvuqle.

State Archimedes' prircv4g5 5nj*e .lcdg0bwmzi9 5nciple.

  $50 \; cm^{3}$ 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 an ooqpz6ll6 7v8vh5 0ved deeper into water of constant density, what happens to the buoyav8qzoh5pve l670 6lov nt force on it?

  Salt water has greater density than fresh water. A boat floats i;x8mcxf: oo +qn(l1 win both fresh water and in salt water. Where is olx wnf+mq8:ixc( 1;othe buoyant force greater on the boat?

  Salt water is more dense tha*k3u;)tv8 pe*p /ttr o56,/gyl-n qcmrkyy ynn fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the sal*kgpu ov,tnrtt/6y p kqyn/8y35*rye cm-) ;lt water is

  A steel ball sinks in water but floats in a pool 3 kzpljdet8kakut qo-t , 92i-em2a54 of mercury. Where is the buoyant force on the ball greateruia l9kk aeqttk5,2 oj3-m48zd ep2t-?

  A 10-kg piece of aluminum sits at the bottom of a lake, r;igf+dd8 dvsga 3 -iu.42 xapuight next to a 10-kg piece of lead. Which has the greater buoy8uai dsd3+ ;xupvi-d g4f2.agant force on it?

  A piece of iron rests on t ozwo;h2yz(tu. (nz.bop of a piece of wood floating in a bathtub. If the iron is removed from the wood, whozth . wzn(z( ub;o.y2at happens to the water level in the tub?

  A piece of wood is floating in a gfzl 4kd*gd*. bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is take*zdfg 4 l.*dkgn off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. u.5ca4 r;p opqfl,3) hf6lvcg The diameter of the pipe at point B is larger than at point A. Where is the speed of the water grea;vpcfqr4p ) a6lgc3uo lh f5,.ter?

  An ideal fluid flows at 12 m/s i;r 8xe8ugjvvk3 cfr9 +n a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in t 3f+ek9;rrg vcx8jv u8he wider section?

  An ideal fluid flows at 12 m/s in a horizontal pip:xv4/ fbrhhar)z )4we e. If the pipe narrows to half its original radius, what is the flow speed in thr4hvezb:)4w f a)/hxr e narrower section?

State Bernoulli's principle.mdq;6v -y; du yjx)pd jygr;8,o+bu7l

  Which one of the following is associated with the law ofbniul) sqx:)4 conservation of energy in fl4 uxiql)ns)b:uids?

  As the speed of a moving fluid increases, the pressure ii (;g0wg)r3n daquqnj84vz6g.vs 2pl8 wj3f in the fluid

  Water flows through a pipe. The diameter of the pij c,53v gbik(cg7lbu:mt, ck/pe at point B is larger than at point A. Where is the water pressure greatgbic7 u 5jvlc 3(:/t,k gcbkm,est?

  When you blow some air above a paper strip, the gvz)5*q7t/c frryr3t;9b rem paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of air reqi1q5hfsl;og/z b.m , sistance on him iqo; hmb fqiz/,5sl.g1s

  Two Styrofoam balls, of radii R and 2R, areou gff f 3j-k671ty4zn.vf 5hy released simultaneously from a tall 7z3 -gf6ky.1nf4ftjou5h yvftower. Which will reach the ground first?

  When a small spherical rock of radius r falls throughya.wh/ 2j ntp5* icc1s water, it experiences a drag .tc2nj1s pyh 5ci/w*a force $F=arv$, 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 av y*q-*h 3flcl narrow pipe? That is, if you made a 10% change in*hl-yv *lc qf3 each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipesx p mp+zna:)4w are the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the :w+)n apx4pz msame 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, bz7jv-jlas 8qea9 )fi5ut pipe B is 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 the flow rate in pi5a9f e8j zlja)qv-s i7pe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to io/d+dkx w1)ft64b bs be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", tbddski) bx4o/+fw16this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to a height hexj3q6)/o0lus wfmp6 . If the diameter were half as great, how high would the wates6ql e3xf/ )mo0puw6 jr rise?

  Certain insects, such as the water bug, are sufficiently lightweige/8(snosgi6g. mt; qa ht 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. gqe nt;/gs.(m6 8soia 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 suffici3 0 2i/i61ma/5mcsb auwkp5 mzzauw:i ently 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 pos 5a ms3u0wi /m 6ip2c:15uzbmizkaaw/sible 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 maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm 3pj pm 6.w8 yak.qmj-g y/yq.yx 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its. y.qk36y-jmywp.pq /ay8j mg density?

  A liquid has a specific g.8m) zz2 pnhrys2qn i2ravity of 0.357. What is its density?

  A brick weighs 50.0 N,yjn. 6e ,wu)jp;tpqg7 and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surfacp ptwn)j,7qgj e;6u.ye?

  A person weighing 900 N is standing on s yn72*zh*e kuznowshoes. 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 xwztta9br9 7m:vrroxv j4* 4/of 120.0 m in the oc9* v4/trvt 4mjr9a7ox:zrxbw ean?

  A circular window of 30 cm diacktz7c/m:k ms( ao(8 imeter in a submarine can withstand a maximum forcem(c8oi ta:z (m7c/kks 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 pressur2e-bvbjjx/g*uvh(- p q/9l6x 3 a adgoe is 300 kPa?

  What is the gauge pressure at a locbr l1./ .sia:dxpsv 5;k8y mrration 15.0 m below the surface of sea? (The density of seawaterrprlxk s1 8r yais.;./dv: 5bm is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a loclo8ncyl5+d /f5l+7a sysfo x8ation 15.0 m below the surface of sea? (The density n 8l+fc5oyfyasld sx85/l 7+oof seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small pistsoe(5abuo; 8 d gg(tl:on of a hydraulic machine. The small piston has areadt 8(aos;5gle o u:(gb $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the sm4qqf 6vgfr 7x2all piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small pg qrqv24ff 76xiston in order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be2. 5s1w-xafv4n btfop lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to acc 4-pf1sa2obnwt 5xf v.omplish this?

  The small piston of a hydraulic lift has a diame .st.k2w,pf+vz u cij6 eh;mb,ter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of t k 2e.+c bi,6pfzusvj.,; mhw15,000 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 ( u1y;xf6kvd5luvy c3lga0 n540 N in air and 30 N in water. What is the buoyant force of t(g vu; u1xnc 3l56fky5vd0 alyhe water?

  An object has a volume oslc :q4 nq djkjlxn38-7yv 5rb9/f7tof $4.0 \; m^{3}$ 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 wd z*2)dzda+td ater. What is the tension in the string? (The specific gravity of ironz+dad*d)zt 2d is 7.86.)

  If the density of gold iq :x5;q qaaa-gjas72ts $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density/p:o zwfj: z+*-hea eo = $7.8 \times 10^3 \; kg/m^{3}$) 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 ma 7hp1jd y.cq900sse when it is immersed in water. What is tma1907h. ecsqsy djp0he specific gravity of the object?

  A container of water is placed on a scamznjtwk0x3s 1 q-7g.kle, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from x0k jwqzg.ks1tm n-73a thread and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with1a2 d1z8j zy4 ptv*tcq2vgt(nx.og6v a mass of 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 and diam+ h 8 *i)/aei.uasdrzjeter 2.0 cm will just barely float in water. What is its /ui)djrah* zi+8. saemass?

  A rectangular box of negligi 41sbb7dv qyy6,c3nt j(wiohw0gr n8(ble mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be load(nbcg,sod r0h(b1 8q jniwy6t 437wvyed 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. Tg 4v: lrl):rr dmmip9km8q00khe weight of the displaced water is 2000 N. What is the weight of the objlm mivgd 084 m:rqplrk0r 9)k:ect?

  A solid object floats in water with three-f4,p- gniazu5j ourths of its volume beneath the surface. What is the object's density 5pa,u gjz-n4i?

  A 200-N object floats with three-fourths owp*6 .9rljc4hglfeh24+cp cd *xw f n-f its volume beneath the surface of the water. What*rclwh*4 pd6j+4 ccxhf eg2.9 -fw pnl is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the mljv 8:gk1vqjn;9.ginkava 24 inimum area of the floe that will jus2vng4;18vq kgk.n: av9j alijt support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a piozg; kw:ya; btc3d7 z+pe 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 bh 4 ei1+cv5rjr)ejgt2/u.dg cm diameter restriction in the line. What is the velocity in this restric.urde)/5 24v1g hgi+bej rjcttion?

  Water flows at 12 m/s in a horizontal pipe with a pr.x2da sbix0f. essure 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 fox7a qg1/es0y+n od*yn untain with 300 kPa, if the0y* + n/a osge1yqdx7n fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of * gh j)sm*9uuaa water storage tank that holds water at a depth of 15 m. At what rate will water flow ou)auu*m 9j*s ght of the hole?

  Water flows through a horizontal pipe of cross-dl:j/mrty ;d6 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 longh1v3r/ hax9xrep w(6b72 iwfz 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 w 7aw3rpe6(rx12fib9h / xzvhthe 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 we ,mrp cz( *54adbzj/nall of an artery decreased the radius by 10%. By how much would4/rdn,a(m5pzje* c zb the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in alx w*9ffo,4:rd1ot kt pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how hi1d:lffo4 ot,xkw tr*9gh will it rise in tube B?

  The surface tension of water is 0.07351va*b3o rdtr N/m. How high will water rise in a capillary tube of diameta r5vb*t1 od3rer 1.2 mm?

  232

  To what height would water at 0 degree w g9):kc 8ixtsn+,mrz Celsius rise in a glass capillary tube with9: g,8x)znmt+ws i krc a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water 3:klto si+h4 gh2f-isrises in the tube to 4.0 cm above the level of the pan. The surface tension in ths2: tihfko hsg4 -3+ile 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 fram-jjnvwsj(;x-5b41 q;- yo sc vci ih9b7p2wjze of length 0.120 m and width 0.600 m with a soap film formed within its confined area. Ifj(;s -y9hjxiwv4obzcj2ic1 vq57;sn-bwjp - 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 rectanguf)m8r vczb 594ltm7hflar 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 frame. 7mhvml cff58z)r9t 4b 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?