The three common phases of matty*ipv7zrg1r aj t 4.w4nfqpb22tvh1pg e72n ;er are

  Density is

  Substance A has a density of 9phi+axoxl,nw nndl(8 0w(w8 $3.0 \; g/cm^{3}$ 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 prdn*s gf3lmqod2 j8u(2 essure?

  Consider three drinking glasseswzj4g 69-pqhq . 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. Which glass has the greatest liquid pressure at 9p qghzw -jq46the bottom?

  What is the difference between the pr yx/,t xgbw:-+5vx bpuessures inside and outside a tire called?

  When atmospheric pressure changes, what happen-7x 6qcfwe /wys to the absolute pressure at the bottom ofy 7/xw6ec -qfw a pool?

  You are originally 1.0 m beneath the surface of a k3ucq )4. rj6p *fg3fsddnd- qpool. If you dive to 2.0 m beneath the s.u n*)fc ksqd-grqd3jdf 643purface, what happens to the absolute pressure on you?

State Pascal's princ 1bm08hqh( dxj 9tuhg,iple.

State Archimedes' pruaf:.o 1vdiz tt:wt*v8 0zo w+inciple.

  $50 \; cm^{3}$ 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 constan rhkg+g;4k n7it density, what happens to the buoyan4 kr+hgk7;nigt force on it?

  Salt water has greater density than fresh water. v2e2neq h0apx0rzz-gw5cxs z8c 9 81p A boat floats in both fresh water and in salt water. Where is the buoyazh2spn c9 e 0 1e8pcrvx5w0-gxz a8zq2nt force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh wate(.x)az*l:qt*6iprqel/c7 am/u l mhp r and salt water. Compared to the fresh water, the volume of water displaced in the salir:uq )/at*aq(pm6*p . clzhx7lme/ lt water is

  A steel ball sinks in watk2jwbc82-1.x yzv p)1t rpajber but floats in a pool of mercury. Where is the buoyant force on the ba v2pkr-j 2jbzabcyx 1p)1.w 8tll greater?

  A 10-kg piece of aluminum sits at the bottom ztk x,l:gkp;) of a lake, right next to a 10-kg pi):tk;gxlz p,k ece of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a e65w8cwnc q kt*lj8 ;ub+)cml0gooa 2 piece of wood floating in a bathtub. If the iron is remov)aub+e c ooqj tw2l 8 5k*mgl6w;c0nc8ed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a baten,e, z;eux6 nhtub. A second piece of wood sits on top of the first piece, and does noen 6enze,xu ,;t touch the water. If the top piece 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 piodve:;m6 y1x3o9 yaqype at point B is larger than at point A. Where is the speed of the water gre1oyxdo 3e9q yymv:a;6ater?

  An ideal fluid flows at 12 m/sxb:gug uj2t+2 *op/vjs 693lbtk2wgxc8k zc , in a horizontal pipe. If the pipe widens to twice its original radius, gctc9 wzg x6 :up2o8 23tv/ j+2*xjb,ksl bukgwhat is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the), x *h9vvp-.4i.ifv3b qj-ar0nwxwzw .jqlf pipe narrows to half its original radius, what is the flow wljap4rwbwv-nvizq hx qi*x-. ,vf. . 03)jf 9speed in the narrower section?

State Bernoulli's pricb cl,q23uz:w nciple.

  Which one of the following is associated with the law of consln 8 z1.e2:xsqtdaq n5ervation of energy in flels:dqn2 zq58t xn1a. uids?

  As the speed of a moving fluid increases, the pressure inz 6r gmnfi(m,n e; gqa27fag.- the fluid

  Water flows through a pipe. The diametkdq 8-xd why8*er of the pipe at point B is larger than at point A. Where 8y- hxqw8dkd*is the water pressure greatest?

  When you blow some air above a paper syhvzlk3jta8 7pd jl1u8p( j:,trip, the paper rises. This is because

  A sky diver falls through the air at terminal velocf mrh+opt(2,a ity. The force of air resistance on him(a orfph mt+,2 is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a87+ r gq9swizk tall tower. Which will reach the ground first?zr+7gswik q 98

  When a small spherical rock of radius r falls through z t5s2 sct6cfmhn.q3-np t4.xwater, it experiences a drag .n4x.ts5-cht2qtf3 nm6c psz 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 eff/:,ljei;6mcwcr .0ys- p z+u meq0 xqzect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest c0mqrz cp,0+w e 6yuxlsm/ezc-j;i: .qhange in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the r kxla4 4g2*p(* kdluigjc .d;diameter of pipe A. Wcx* lkgpj 4krldd.4a2*ig; u(ater 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 pipe B?

  Two horizontal pipes have the same diameter, but pie-ii4ytg 2 uh+pe 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 hy+-u4g 2ei tithe flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. ujtu yo2;u;joiq/-o - This "greasy" taste seems to be associated with oil spreading out all over the surface of o-ouiqt jo/-uuj y; 2;the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the watervm +h2-r qih7.12i/bpc7ar q;6 gyow)vry rlj rises to a height h. If the diameter were half as great, how high would the water rjm;+2 7r gy iwrhl-)62rbr7oahv qyqp /.cvi1ise?

  Certain insects, such as the water hckge(fk1sl 57xd,.y x;xa x *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 twicy.keacs;dfx1 gkx*( 5l,x x7he 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 th-yad/hu ,t )n t1kmomi 90x9ioe water bug, 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 tensik h/taum9yo1inm t9 i x)d0o,-on, 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 maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x *m)xc .h--q-vshju s k3.00 cm x 4.00 cm has a mass of 30.0 g. What is ux-- jhcm.vshks q-) *its density?

  A liquid has a specific gravity of 0.357. What is its den(ywp v4 nc4na ,+watkgz(5i 2psity?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4h/6 gts:azw 0v0nzp2s .00 cm. What is the maximum pressure it can exert on a hor:z0/as phwnz tg6 vs20izontal surface?

  A person weighing 900 N is standing on snowsnrlbp 6tu/zi, /3:dzrhoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine witu/5aj ykmwvp 23,k r:thstand at a depth of 120.0 m in the ocea: 3upar y/t 2kmvkw5,jn?

  A circular window of 30 cm diameter in a submarine can withstand a gl+njf mt6eqo-. + 2kimaximum force o+k-+2jtqn ie6mf g ol.f $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressurpupod 2 ez64: iorcn(,e if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the sur,+ rzs3f xotizvky24 +face of sea? (The density of seawx+3z kfo+yr2zt4 ,si vater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pqbe,) 9y03c rqyzz/rh7l 7 ixui+b,rpressure at a location 15.0 m below the surface of sea? (Thxb0)qr 3 b,9+pquyy7c zriihlezr/,7 e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pistnndfwwlu 19/ 7j1h1kmcml 5 ;kon has area1uw ;djm 1ln519fl/7kmkn c hw $2.0 \; cm^{2}$. 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 )-)kav5lo pb /szt3nv8sir:rt 5zt3xt q,t,sof 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car weighing 20,000 N on the large pistonrz5 s8t5 t)sk/o:rxz3,)iv-3ba tpl nqvstt, ?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston xb4em5i5m8ii . What force needs to be apbi8 xmei5i5 m4plied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 0.uzqyem hh2em8p 86e u k-bw18.0 cm, and its large piston has a diameter of 40 cm. The lift ray.pu0hqbek2u6w-8 z eh8 m em1ises 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 andkogb7 9l.2n.-m plmj b 30 N in water. What is the buoyant force of the watmb2 .bonl7kp9.- jlgmer?

  An object has a volume +:dam;os; ce uof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid irgchrj, 3 1wnoblp*t9 1fga: v;on is supported by a string while submerged in water.p:c1r b vw9,gong3fh 1a;l tj* What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold isck.cgq, jwi ) /ojp),n $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel 2pst4qxmr0 xh 37,sz 6f toylnyeu7-9 submarine (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 ankaf s0duc7o/-shz p( 6kgz2 +qd 6.86 N when it is immersed in water. Whqu6s g+c/2(ko h k7afzz-d0psat is the specific gravity of the object?

  A container of water n4;l1;-sze5bgyl 8 u xhby 1pjis placed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (speci4lnjy8sz; bpg-5b xhle;u 1y1fic 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 ofrsrx(-bbs;,fmoob -d qj5g94 $2700 \; kg/m^{3}$ 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 3.-/ddmyuo ph+wl(q b diameter 2.0 cm will just barely float in wated(d + 3 -blhw.omqy/pur. What is its mass?

  A rectangular box of negligible maszg5,qhh63 dx cs measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be 3q h z56cxhdg,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 wa4o5 hwz,07x0 oftwlkl ter. The weight of the displac0wf 0o7 5k,lwhotx 4lzed water is 2000 N. What is the weight of the object?

  A solid object floats in water with0)chftacgqgmd89 k09y a (j.l4 ihuacf . h4v7 three-fourths of its volume beneath the surface. What is the object'ha. v9)lj7 qkff 0m80hc(4g a4tyigc.9caudhs density?

  A 200-N object floats with pco1w(d yj 30athree-fourths of its volume beneath the surface of the water. Whatyp(jdw 3c o01a is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100pnmf 0/ks uhd p:s2z)- cm thick. What is the minimum area of:p p0)-kn u 2sz/fdshm the floe 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 diametcqek e,rk/k,-*ki4 fql 0 s:vver 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm dia kb ukpo;2w8.vmeter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in t 2;.kw8kp ubovhis restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressur1+ de gylj5j.oe 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 drinkingd59d*lj6ohh xmr)ci awv 2*m) fountain with 300 kParh 9 m)6jc*d*5ah2) wivmolxd , if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs z8ei3wtc-z ;g7fg ctqc(nvv; , 130ynqb5kjjin the bottom of a water storage tank that holds water at a depth of 15 m. At whatcv ckn;fj1tvzbe 58 q7t 3gcz30i-jy ,wg(qn; rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectibmslf5 1(nkf *onal 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 c-b6 fmq2ok5tw t mp760.20 Pa-s. How long 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 the oil is kept 6 cm above the top of the ne6tkfwmq75tmo-b62p cck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up oyxdtc9inw s 7;48r5 znf fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blw7y;s98trdz 4inx5nc ood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice t;bphit; uq)oxk6kyl72jms( /he diameter of tube B. If water rises 24 cm in tube A, how high will ihtoq jk; /x6pby ;)ul 27m(ksit rise in tube B?

  The surface tension of water is 0.073 N/m. How high wild nep,7;i9gry l water rise in a capilleg9rn i,p;d y7ary tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius r n e, qe1ku4*57.bk7quvjkj yzise in a glass capillary tube with a 7jb.v *k4yneuk,ue1k5 q7qzjdiameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water riseovcl3f21 :blwx-3y rhs in the tube to 4.0 cm above the level of the pan. The sw 33 ocl21 :vxflhrb-yurface 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 w0w/m1(bl gs g8;dic8d1ft uzaidth 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m,1z018cua mgtlg i ;wdsbf(d /8 how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 ;*gyr7 6ydz4cgzur5-np c q.-kk 4jbhcm, and is built in such a way that one of the longer sides can be moved without bursting the soap film contained in the fragkkrc -u7*.4rh q5p znydy-zg6 c4 b;jme. 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?