The three common phases of pkr4u(mhk l,- matter are

  Density is

  Substance A has a densityzto.mj4/ol m:9xuz -f 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 pressurec,a. ycvu :b+e?

  Consider three drinking glasses. All three have the same area brgyf/sgq /wbe0kiak / 53*;lx ase, 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 boxre/;gskw03 5qbl */iya gfk /ttom, 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 between the pressures inside and outside a tire ch-9ow*s vm ec3alled?

  When atmospheric pressure changes, what happens to the absolute pressur9k2( 2 y9xz1vuh8dblecxd3z le at the bottod2kxzvdx u(z1 9el39c hb2y8l m of a pool?

  You are originally 1.0 m beneath the surfacqt356bbz+x1 32w d 2pajpdh sqe of a pool. If you dive to 2.0 m beneath the surface, what happens pq2q dds 36zt2b+a p5 jb1w3hxto the absolute pressure on you?

State Pascal's princid 9.4efzzz uu/l(, cka)q0wxp ple.

State Archimedes' principle.hyufsm2+r3n :0qr aq m.lu91mmab. :rv,m7an

  $50 \; cm^{3}$ 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 const ee gect()d4(eant density, what happens to the buoyant foeg( 4c e)(deetrce on it?

  Salt water has greater densit7d 3:mi ut9juky than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force gre dku7ij9t:3muater on the boat?

  Salt water is more dense than fre qu0hufw(18mg sh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water uu gq1wfhm8 0(is

  A steel ball sinks in water but floats in a pool of mercury. Whe7 k( 0bguzt2eere is the buoyant force on the ball greater70 u( be2ktezg?

  A 10-kg piece of aluminum sits at the bottom of a lakewrfe(k+ u mc;0, right next to a 10-kg piece of lead. Which has the greater ( e0rm+;ku fcwbuoyant force on it?

  A piece of iron rests on top of a piece of;xcw+7g5pe*fno2o/gv c v x2 e wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in the tub?e5+xoco2w ;cegv/* xfg7p 2nv

  A piece of wood is floating in a bathtub. A second piece of wood sits onc ib2, 3t)rrns top of the first piece, and does not touch the water. If the top piece is taken off and placed in th,srbt23ncr i) e water, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of th r*m bg0+6jcr,4c zneoe pipe at point B is larger than at p4nrzmg0 b6cj,rec+*o oint A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. 84j 4og;, n/s1;u4mjofd1yam bhliw5 vk4 gylIf the pipe widens to twice its original radi ;4i1n ou;k8/14l gjaob4fv 4dsyw m5,lghjy mus, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe7za9a8+usp n u narrows to half its original radius, what is the flow speed in the narrower secta+7psu8 aznu9 ion?

State Bernoulli's prin1i p3l7 sffpas173lysk;2 vr7ekg tw4ciple.

  Which one of the following is ahpel as/b +a+ yq8c1y6a;.pbassociated with the law of conservation of energy in fl+8e .b+ paas1/6alqyapbhc;yuids?

  As the speed of a moving fluid increases, the pressure inmu,m cv-pz* a9 the fluid

  Water flows through a pipe. The diameter of the pipe at point /p vjz7 x4asc-ocuz hy1;fh2(B is larger than at point4v/7p1hy zoh(x za cucsf;j-2 A. Where is the water pressure greatest?

  When you blow some air above a paper stripeh.5:nc h*, +pbxo3m lfq*kfw, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The0 8.hq i2ou ayrvz7(lg force of air resistance on him 07(g2li yzhvqar.8 uois

  Two Styrofoam balls, of rad9 7)a p009meevjewpopct+o ,zii R and 2R, are released simultaneously from a tall tower. ao90w ep+pjp)v7,9teoez cm0 Which will reach the ground first?

  When a small spherical rock of radius r fall0hfv ov,68yiys through water, it experiences a drag f0if hy8yvo ,6vorce $F=arv$, 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 f : hirm 0ml)zp3* .misvso77kon 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 change in the flow rate?7h sf ml3 miv*7srm :z0kopi.)

  Two horizontal pipes are the same length, but pipe B has twice the diameter r 1sri;w4es7mof pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the 74w 1;smirsre flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the sam7 c7 ,gh*igzple diameter, but 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 pil* zg,7ic7gp hpe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seeu4( h5d hacq; p cz+wbv8x30abms to be associated with oz vcupha5+(d 3qh8xc; aw b40bil 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 diame2vk(8mfjjq+4f4czpb/z x5bjl9dbz0 ter d is placed in water, the water rises to a height h. If the diameter were half as great, how high would the water rise?4 d2bvj8f 49/pzbj(kb5qmcz0 lzfj x+

  Certain insects, such as the water bug, are sufficiently l ur-avy ;z;.xaightweight 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, a.;yx -ra; vuzin 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 the water bug, are sufficiently lightweight thabjb3zzc 49)wm-.j mwj t 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 awc4.j 3jmb9z)j bz-mws 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 jo iw3p+ep(q33.00 cm x 4.00 cm has a mass of 30.0 g. What is its densityjp3(pe3i+w oq ?

  A liquid has a specific gravity of 0.357/g2yoa4uq6tjcbdc.v t06 p8b . What is its density?

  A brick weighs 50.0 N, 5nr-xl9 sdv 2jand measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can ex5jnxrd -l9s2v ert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Es uib 4/kj79mbh8ya/s6b arz :ach snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at al v sr:(oc/*twt 2c:mx depth of 120.0 m in th2t( vccoxrms: t /*w:le ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum l)d ld de5fd 9hr f67coa3xae8sw)k n(ib39(uforce o5iu36wfdl dl kr)e7e x(fh ca 39ad)9os8n(b df $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure jlqcp os3c /1 6q6fxx)6k- qimif the absolute pressure is 300 kPa?

  What is the gauge pressure at a locativf;zsd.h, )vion 15.0 m below the surface of sea? (The density of seawater is v) z;i.,fhdsv $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a locationt*b s3tj0nh+k 15.0 m below the surface of sea? (The densisb j30*h ktn+tty 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 pis8jasn-tf sevj6 3 vs1u8. yl:eton has aue se6.t8 a-snf jv1jv8:l3y srea $2.0 \; cm^{2}$. 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 sgsg8: l. yfrzpm8(9 l+8qb 1y6xezjb a radius of 5.0 cm and the large piston has a radius of 15 cm. Whj6 y:zgqesx 8(9y1 .l g+ rzfbsbmpl88at 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 b4g 0xkxpa* pk2e lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish thi*kx 0gxk p2pa4s?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its larg v1frwud+laq)/ q v p73mj*o-se piston has a diameter of 40 cm. The lift rais+1v fq3umoda- jpvl*sr)qw7 /es 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 buoyant forcm4n 48 4ns; ow8ikaidi*px6)(nfr hb ee of tap8;e46w4 mn*4(ihi8b )fdrnixn k os he water?

  An object has a volu8wf(4rjhu /gv me 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 submerged in wui6j .zvxplf pxv.+ 07ater. What is the tension in the string? (The specific p x+ v760p .fvliz.juxgravity of iron is 7.86.)

  If the density of gold is )m ur7:vvpe6 +zq/n, pce zqg1$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel sub2w;o5jygpn 77ij1uq nmarine (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 whenhsjshz ags0;yc1 91 r1 it is immersed in water. What is the specific gravity of the 01jsgrzc91yshh1s; aobject?

  A container of water is placed on a scale, and the scaia tdp9e3 dyd5y3/ot 89u.w myle reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and low./5 pao d39yyt93w dumey8idtered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0lb f oa 0n m1f)bv;yaz7;m3k+7 pt*uyk 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 lengtx yp*sn2 ,jlzg .c6vnvs0m,k7 h 12 cm and diameter 2.0 cm will just barely float in water. What ikzjy,vsv g.p*6 2,s7nxnm0 lcs its mass?

  A rectangular box of negligible mass measures 5.0 m lontsk+ak4 egrx 3 u:k*j*g, 1.0 m wide, and 0.50 m high. How many kilograms of maskr k* g43*k:+jxuaet ss 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 waterdc sma zea:6+js9hi*io o1: .o. The weight of the displaced watee.s+ 9oz6oi haco1 d:m:si*jar is 2000 N. What is the weight of the object?

  A solid object floats in water with three-four45g2l ku pmag.ths of its volume beneath the surface. What is 4pl. m ka5gu2gthe object's density?

  A 200-N object floats ww7*xe2 ,rzqd with three-fourths of its volume beneath the surface of the,x2wdw zq7r*e water. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cmqrdj sxh94x ,3 thick. What is the minimum area of the floe that will just support the bear in saltwater r hsq,d3jx94x 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/ gbh np qs6moj*wf*m5v+**ycc8j7dd1s. Find the flow rate.

  Liquid flows through a 4.0 cm dia;-g8n jecto9m meter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocin9;m8geo-tj cty in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressure3s.kud4 2wf jpro.i4;soh *wy 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 doe1hgfx -pi4(ro s it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 304x of-ri h1gp(.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a+frrrwed tf0jw.i8l1 t0o6 gs- : u,bl water storage tank that holds water at a depth of 1d tblol ww:se1,tu. +r- ff06rij g8r05 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cgk0b.qktx3xal0 -- /ruv8yp ,g dkb0t c i)d-hross-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 take -x52x;ln-v (do zigv oto 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 thexi v-2 gxz( lod5-;von 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-7ow d ydpo;.7pdecn78up of 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 constywdenp o7; c8d7o p.7dant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A hasisfl t/b8 +on7 twice the diameter of tube B. If lo i/nst8fb+7 water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of waofi 824hbqd ld,+9m/h:iwvr hter is 0.073 N/m. How high will water rise in a capillary tube of diametb,q4 2h l hdiwfdr9m+o8iv/: her 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tube g24zj szv4cd 5wi 4v 4s2jdz5gzcth a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water h+nj qeob(;(-zy )icerises in the tube to 4.0 cm above the level of the pan. The surface tension cne j h(o) ;zqye+-(biin 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 0.600 m with a soap fi: 9:npcpffks gk9 g94yhr+ rl2lm formed within its confined area. If the surface tension of soapy water is 0.0:rf9np clhkg: +29f4ygr9p sk260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and m6dws2i2(jd 1caa x 5b- czm1ewidth 5 cm, and is built in such a way that one of the longer sides can be moved without bursting the soap 2dc1256acwzemdjasmix b ( 1-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?