The three common phases 2xt7sf xv7n e84t2krc6uim9 aof matter are

  Density is

  Substance A has a denhzr0jtzi os9)gmy okk.)-w34 sity 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 pressuftpb,h8saw*u o )47om oi if*w8;;k iyre?

  Consider three drinking glasses. All thr3m0zcy o :2-8gk,* qpftge xduee 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 lessf3y8g 2k*mq e to:,-g0cxpuzd water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and out k d ubiqe;d, yppz.bc )lm/7r470o+ymside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at tn ;ob g27kgpw0he bow2pkb;n 70gg ottom of a pool?

  You are originally 1.0 m beneath the surface of a hmea kzpybpdinds61fv,* 5w 9-/qj 9 1ld:w)dpool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on yo 1b-pjvd el*zs/6, aywf15 d)ddp:9 9kwqihmnu?

State Pascal's principlhxwmk *t;+9kh e.

State Archimedes' primg do7lnw*:6i84d 4gz tn2ouinciple.

  $50 \; cm^{3}$ 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 happens z vg5b-/ on5)ljwbt9cto the buoyant f zbg )l5tjov9ncb/w -5orce on it?

  Salt water has greater density than fresh water. A boat floats in boiv:usp j tbfb-3nv g-:a6.7wnth fresh water and isuap .j:n6bv bwig-t7v 3-f n:n salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh water anno7. u n6kg1ond salt water. Compared to the fresh water, the volume of water displaced in the salt w1 oo ng.uknn67ater is

  A steel ball sinks inl6r+g,g3linmbm r 6sy 7n,3x;ggg (n q water but floats in a pool of mercury. Where is the buoyant force on the ball gll,; +gnym bqmg7g 3n(g3xsrn6,ig 6rreater?

  A 10-kg piece of aluminum sits at the bottom of a l7r* ou09nzaw2cz mtp0ake, right next to a 10-kg piece of lead. Which az2w *7oncu0t9pm z r0has the greater buoyant force on it?

  A piece of iron rests on top51laehp 8ue71 b6 ui njg f0r4aduh*r9 of a piece of wood floating in a bathtub. If the iron iaag411l7 hp9e6hi8b rud 5 *u0f urenjs removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top qy a)o3nd8xhw615, rs,bjd5- mjnzymof 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 level in tbnysmm d, a) or58,wzq-j6yh j13nx5dhe tub?

  Water flows through n qvy(/f n+nxzb) 0r8wa pipe. The diameter of the pipe at point B is larger than at point A. Wy08brnf )xznvnw+(q/ here is the speed of the water greater?

  An ideal fluid flows at 12 m6q pyd7,u 9y rdcvz,a+qp)lk //s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the widyqzy,,d)9l rua6pv cdpk +/q7er section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If themzwx-hsbd:yq(d k)xq.5q z- 6 pipe narrows to half its orisbz wz(q6x-:h y5-xq kd q.dm)ginal radius, what is the flow speed in the narrower section?

State Bernoulli's principle. w5cgav xa6:k4

  Which one of the following is associate2.vui,jmrv:z d with the law of conservation of energy in fluids?rm.vji,z2 uv:

  As the speed of a movi*99evthxqf8cs4w ex pw p: .:( q9qirsng fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe xoavw4.02e pn- usa4pk ll4r5at point B is larger than at point A. Where is the water pressure gr4a-n.kusvr0 ppaex4o54lw l2 eatest?

  When you blow some air above a paper strip, the paper rises. Thise+yc0s;8;w 0se o nuny is because

  A sky diver falls through the air at terminal velovt akz)+ qhoe1 i2pu +whd-/k6city. The force of air resistance on k)1zethw-p2oh/i6++vu ak qdhim is

  Two Styrofoam balls, of radii R and 2R, are released simul xzh(vgq/o6)xxh1b p; taneously from a tall tower. Which will rea(phh)x/qz;b1x6ovg x ch the ground first?

  When a small spherical rq o/8 +qp8aq.b.sxq brock of radius r falls through water, it experiences a drag fo/bbop8a.qq8q q r.xs+rce $F=arv$, 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 throuisqiuxfn4 +3m f1 rh34gh a narrow pipe? That is, if you4fhsn f+4m1rqu3 ix 3i made a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, vw4uzgttf; xi - ue4 v*m72cl0but pipe 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, whatt2 u0m;vxfzl-c 4 u4ivweg t*7 is the flow rate in pipe B?

  Two horizontal pipes have the same dibia7q mzoolm- 5fb488qm ar1,whm5 ; fameter, but pipe B is twice as long as pipe A. Water w o oa4mf8b5qr8 ;hm1,-7faib5mzlqmundergoes viscous 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, it often tastes greasy. T kh2lqg);rdoeb4+5 s idx0i; lhis "greasy" taste seems to be asso s;l;q kdgbrlxe+)h0 2o i4id5ciated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diametex6d v md-gf7m3f2.cpbn0f 5ek9szcxkp6 3: ze r d is placed in water, the water rises to a height h. If the diameter were ep-b6nckmx3 gv3zc 7dp ks0m.f d5ff 2e9:x6zhalf as great, how high would the water rise?

  Certain insects, such as the water bugda 4bn-za5(p n, 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, twzp d5n-nab4(a ice as wide, etc. What is the weight of bug B?

  Certain insects, suchx8)5d:uf ajs.9tpxc t as the 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 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 bi5x:c.ap8dt t ujf)s9x g 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 dimension63 tt:kp 8i( *vbnjdfa**jvoes 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. tj*3 8akdnipv fjvo:*( 6et*bWhat is its density?

  A liquid has a specific gra ;fem,mjs 5p7lvity of 0.357. What is its density?

  A brick weighs 50.0 N, and meastjuj f:,/6q*eu tvn1)cgmr1oures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum prentj1 qjv:*to/gcuf61e,)m russure it can exert on a horizontal surface?

  A person weighing 900 N i nwpunia,u z3n3c,p)9s standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine h5)ngtpld6kuk4pp5 5i0 zst 4withstand at a depth of 120.0 m in the d5z6 ltt54guihpk5 k0 psn4)pocean?

  A circular window of 30 cm diameter in a submarine can withstand a mll0 uv2)j 7uvaaximum force ofv)7 2ju0alluv $5.20 \times 10^{5} \; N$. 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 absol6-um5fk) 0jwb zx avc.ute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface ob*c0 13/fly t bjpzm6cf sea? (The density ofl3cfb*z0p/6 btj1myc seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of qp3 i 45bton as)bbur3 9fx:w k.7)cqbsea? (The de 9:c7xu)os3pkqbt4. qnb5) rbfi a b3wnsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of adkjk 59(z xe c) .+gwb5vsuj4q hydraulic machine. The small piston has are95.vj )kewqudj5gsxk(c+bz 4a $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the small pv2bg g4 .tegvi41ut7zt xt(iijk5swf 3(x *l(iston has a radius of 5.0 cm and the large piston has kge 1 vw .tixf 2vtt4u z7s4l(bijxt*3gg(i( 5a 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydrnbiazv0;h6-b aulic piston. What force needs to be applied to a 5.0 cm diamezb 6n0;hi-v abter piston to accomplish this?

  The small piston of a hydraulic lift has a dx o-ip.7pdy p6kpj5/ uiameter of 8.0 cm, and its large piston o p jpp57d.6k yipu-x/has a 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 30 N in water. What is the bvx 2* 2j4bw lxkoq(yg7uoyant force y2bwv7*kjog( xx2l4qof the water?

  An object has a volum9pwod3w +t;ru w4bg ;l6)fnhme of $4.0 \; m^{3}$ 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 submervbf x x0.,hcha7 jt2-h)csw6wged in water. What is the )xc hsh. w0v-h7w62at jx,bc ftension in the string? (The specific gravity of iron is 7.86.)

  If the density of go lrs + 8h-)u1 wbbj3z+ydmapr3ld 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 submarine (denqtt15.natfxm6tgwk- -z+ )tdjfd. j+ sity = $7.8 \times 10^3 \; kg/m^{3}$) 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 im u oojt0+12iwemersed in water. What is the specific gravity of the objecti ju+t0e21owo ?

  A container of water is placed on a scale, and the sc lgx+..a.hau aale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.h +laxga.u. .a9) 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 v -humjx/gk n12b84pd 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 diameter 2.0 cm will just barely float,yjqovx3; 7hlb iw4ru p4 ou y*1**hbr in water. What is hi*4 vuy1b uo qw;*r,p37 bhyx*4ojlr its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0ecp; uj rj62vj2)5m8b//o k ks,su qqs.50 m high. How many kilograms of mass can be loaded )uosvb/8ms ;/k6k2,epjj 5cqjusq2r 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 volumzl*cv(lkuxw o7vkoq9w/5ocmn(5 +5 8un um i9 e beneath the surface of the water. The weight of the displaced water is 2000 N. What is the k5u owlcl+cm vzio/q*x9k79 v (wonnum5 5u(8 weight of the object?

  A solid object floats in water wixx+ o4l j:uru3h45cge th three-fourths of its volume beneath the surface. What clx +ju :5og44exhu 3ris the object's density?

  A 200-N object floats with three-fourths of its volume beneat+u8gxb * tzfisai7p0(h the surface of the watert i+* 78p gzisfxb(u0a. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What isfu9swh: x- w/s the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The spec9/swu -h ws:fxific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the flowz,h ma1 3et t.r/cp4sd ooj/(b rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There iufg2,fh1q: eb + l17gz1)kv 2mxjrmwus a 2.0 cm diameter restrictionk)g1z ,2hx1bu 7u+r 2fmqe:lj fw1gmv in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal p ekp/1ss,aaq9 ipe 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 drinki6;i1u( c lqg5l vklcv-ng fountain with 300 cqvl1gu(-ck; vi6ll5 kPa, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a waw)g369 e8jf moho*fg )h)ssog ter storage tank that holds water at a depth of 15 m. h go93o8m f*g6fj)s )w) sohgeAt what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectionala (2w0c4xw wht /-bc x)9q6 2t9cbkbgl u8evnh 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 42++zh5i(itq*qd 2tt hg ,uuc d.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume the surface qit*( t+h 2+u,hczdg5 qut 2idof 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 fattq;l og/ s-jr t4a/f9gzsave. 3y tissue on the wall of an artery decreased the radius by 10%. By hvao;4l-asq g3/f z9 g/esjr. tow much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a p18bmr o (i(r(ffiix9n 5pvp v/an of water. Tube A has twice the diameter of fio vi/p 91(r8mnx(fv5 p bir(tube B. If water 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 rif,myktg+q 1 a(p1e4 bxse in a capillary tube kf1t (,aybq+41 p mexgof diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass lwbcbzx k+1(( capillary tube witkclwzxb1( b(+h a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water risesjjtq1uwqcg0j8o 3/au k)3 8kt in the tube to 4.juwo80 /3q)8jk cq kg3u1jatt0 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 liquid column in the tube?

  Consider a rectangulanke+k47, vw0p ylk fxzm+4a 8 akc-y*ir frame of length 0.120 m and width 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 mu+-4 kak*fx,lnayym7k0 + 48e pikcwzvch force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and isp2wh1;q lhxrwd7j+-r9ud 5 3lcja2 we built in such 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 pw17+ dj2l5wx23ur rh9ew-d jlcha q;move the adjustable long side so that the frame is 12 cm square?