The three common phases of matteru/- ftk/k5 lih are

  Density is

  Substance A has a densi ps57bzdsk*c6 ty 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 pre:w(4 baeo31l oe6ddlxssure?

  Consider three drinking glasses. All three have the same area base, ao )nfv i)4z4ppnd 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 liqufi4p)npv oz4) id pressure at the bottom?

  What is the difference between 9 (2atbz2qjsyr iu 96mthe pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens 2pq2noatxeg(5*t ( xi5 y( bdrto the absolute pressure at the bottom ofgt xdt( (yar2p(2b q*i on5e5x a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive isgn3 , izh0kt: o6rc5m odx;3yw*o:u zw24w dto 2.0 m beneath the surface, what happens to the aw:6oudykgo n;0 *z3 wi h,i:tm wcsd5rxz2o34 bsolute pressure on you?

State Pascal's principl/czlqc,uw2,*bx5 3 )g mktsmme.

State Archimedes' prip*i nxm+xc 9/)o8ilr kid6 + /ra(qactnciple.

  $50 \; cm^{3}$ 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 constantrx ou;py2j84d8,f if1*p fohl density, what happens to tdo p;h 2fjypo8,1lrfi* xf48uhe buoyant force on it?

  Salt water has greaterf(; .zh4)srlarj xu4 g density than fresh water. A boat floats in both fresh water and in salu;f(hrsg r z a4)x.j4lt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both f bt x3 +fob:3:1scdwikresh water and salt water. Compbct 1xdw3fs+ oi:b3:kared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of me aw)7) .mb n7d/ktfwugrcury. Where is the buoyant force on the ball w/n mu)).f7w ak7tdgbgreater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10c- 8 jm ezw5hjb,2y5bc-kg piece of lead. Which has the greater buoyant fo8ch2wc ,5y-zjm bbe5 jrce on it?

  A piece of iron rests on top of a pb sg3kfr58u3*q o1.irof trw8iece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in ti5rur*gb8.33f1qtow8okf s r he tub?

  A piece of wood is floating in a bathtub. A second piece of wood sp (u1xphj1;kz9*6r) bmvz b wmits on top of the first piece, and does not touch the water. If the top piece is taken off and pxwr;j p m1khmv*bbzp196)zu( laced in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point B is largerf fh,n /+jp,u8: jqn-o:c ifxk than at point A. Wherh+u p,f :k8nci:f-ox,f n/jqj e is the speed of the water greater?

  An ideal fluid flows at 12hxzja:j 5 )i .yt.avt l(uzg- ii4o9g( m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider su4jjoz (zli) ..av xg(- 9iga thti5y:ection?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to half i83u*mxg )w*o;a/ dsouq. vir its origino3) uirwx.ov*sd*/i gq m8ua ;al radius, what is the flow speed in the narrower section?

State Bernoulli's prsa) d,msf* uyla:f6*tx )x 4gyinciple.

  Which one of the following is associated with the law of conservatiohk odbkb4 (x5+n of energy in flui4xhb(o+bdk k5 ds?

  As the speed of a moving fluid increymgqsn n:1k;o xo4lg -3+ yvw4nyf0c* ases, the pressure in the fluid

  Water flows through a pic 2w p)niq64sqpe. The diameter of the pipe at point B is larger than 6q s)4p2qnwciat point A. Where is the water pressure greatest?

  When you blow some air above a;q1wvzc 3 abd+ paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of alf; *fc4yn ijnj;8dm)ax*eu0 ir resistan0ieacn;fm ;j fy4x*nld) uj 8*ce on him is

  Two Styrofoam balls, of radii R and 2R, are released simultanez:vw2 mcj6tg9 ously from a tall tower. Which will v:tz29c6 wgjm reach the ground first?

  When a small spherical rock of radp b4t7q.1yxykaye0 cx7+ 2usbius r falls through water, it experiences a drybp eu+bxta xy 0qy 1s.4c2k77ag 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 a a6s5r dvt7b x-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 rax -6dv7 rsb5tate?

  Two horizontal pipes are the same length, but pipe B wrubhs8g ekch(ds3+).xna /5has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the ks8 r(5+uhan3x hwbc /)esg.dpipes. 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 pim3y,;yy k s8f ps)6 *czlapkl6pe 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 ratyl ) 6 sp;ka3mykyfczpls,68*e in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often ta) p2glhn0jis9 stes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikg ljs9nh i2p)0ers", this is readily explained in terms of

  When a tube of diameter d is placed in l35uhg 7rdau0water, the water rises to a height h. If the diameter were half as great, hourlagh 7u3d5 0w high would the water rise?

  Certain insects, such as the water bug, are sufficiently :zq;r5 ge1 hx;kbolt* 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 buqz 1okbtrl ;*eg5h: ;xg 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 ast*e, l4+ lg;r:vey4sppz:ioi 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. Nop+iplz :s4tlr g: ioe, 4*;evyw 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 3.00 cm x 4.02:z1ejku lw.ozb 0rw *0 cm has a mass of 30.0 g. zokw. r1:jzwb 0l* e2uWhat is its density?

  A liquid has a specific gravity of 0.357. What is its d g) tc:co;e7 s*wdo ,dm0:pjtjensity?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Wha qvk+5:qdf0zlko: y; ft is the maqffd ko;yzq:l50kv +: ximum pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshc8-uk ihb;qj)ndv,v,y j :2i doe 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 in1+w. rq7uy b.j4)dyptuwg b ,t th+u)gd.4twqub7. bpy y,t wrj 1e ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maxi ndhi53 ;..- vizi ux(ep.kdenmum force of 3-ek.xeu dninv.;.pihz5i ( d$5.20 \times 10^{5} \; N$. 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 pt2 owe m i:p4k3k3nnm,4qqf.qressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of3kkhlhmw n/, s59tfac0h-* k 70 dla(le ydcp2 sea? (The density of ,hlmctfdw(e3k n* apc0 s2 9 0ly5 hkdk/7-hlaseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a lim9 *- vwlyl)pocation 15.0 m below the surface of sea? (The density of seawap-lyw)mv l9i *ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hybpl nk13z80r9wb f0s eo)i3twdraulic machine. The small piston has area ef3s8no bwrt il0 w)bk3z10p9$2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift;c bf + tp 9vpeh*dw44eeh-3ma, the small 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 piston in order to limb*dee; e -h +fwt 94hpva43cpft a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 l .ee / 5l2zlh lid.eymo-fb86cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston l/e2-hiz lllbe o6.5mf ey8d.to accomplish this?

  The small piston of a hydraulic lift has a diamete5g8a iitkn s26r of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of 15,00s 5ntak62 iig80 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 4 ut211fj ih h+yorid690 N in air and 30 N in water. What is the buoyant force of thefojt9i+1ur h 21dhy6i water?

  An object has a volume **a4**n hsn *hy gxnqp0bw /27,igydktqrh9uof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder o,spm;ovy/u k0 ky3v2u1 gshb)f solid iron is supported by a string while submerged in water. What iso0pg h;v b1km/vy 3u2) ,susky the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold iy .60emk0xnlj s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel sq k*;c6po fbvng.x (/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 and 6.8icr; t(6xd7 8hoyx8ho6 N when it is immersed in water. What is the specific gravity of th todych; 7h6(ri88oxx e object?

  A container of water is placenat p/1uqi b2+d on a scale, and the scale reads 120 g. Now a 20-g piece of coppn+u 2tb1 paq/ier (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 densio6*t7orsgz/ii5 s1q9s hi4 povl3(pd ty 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 2.01x(b svqgc zx4ev);q4 cm will just barely float in water. What is its mass? 1csve4qxxzb) 4g(;vq

  A rectangular box of negligible mass measures 5.0 m 8b)d;r x6zejmx648g2jb zm c rlong, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box r)xmgjd 6;6zeb 2zcj bx88 m4rbefore 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 surfacew)1q f6iuxkcyc),r.k32 h u 9oyf 1ldx of the water. The weight of the d1f2u 3xcohdykc6r9w lkqi1.u)yxf, ) isplaced water is 2000 N. What is the weight of the object?

  A solid object floats in water wi5lbx-+ea) prb th three-fourths of its volume beneath the surface. What+l- pb e)5bxra is the object's density?

  A 200-N object floats with three-fourths of its volume beneathx 2k ao3rtw8 2g+p:luge6/ asx the surface of the water. Whattxl 6 ga2krp3/2owxas+ u8e: g is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice fl(g5tswyk2unvpk/2mhnip . )ijfrg5007 ar u) oe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific grau /ygstfv u70j5aw5imgr2h ()kn.2i0pkn) rp vity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a piv8j-:hgwf/f-kvh d ,wh+ x oc3pe 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.vxd(zlmq : qur kukog .,37:y+o21exl There is a 2.0 cm diameter restriction in the line. What is the velocity in this restrictioyv 2q7 ul:lm:+ex . dk1ko ougx3z(,rqn?

  Water flows at 12 m/s in a horizontal dlthfa 6(;abr 99(itp o8 mt/xpipe 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 drinki z*shf 83kvufyn9;nn) ng fountain with 300 kPa, i kvn3) ;*sz nfuhnfy98f the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurspl/)k n-8epxr+wgr5ig**hd q in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of the he*/*pwr q+h dpx nggki8-r)5l ole?

  Water flows through a horizontal pipe of cross-seie r6 ,,zytkq24j+xaue g 8*uuctional 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 (qglnz,njm 7qkg6 8+ k6/trbx j.o q9clong 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 neck, and neglect any drag effects due to the upper part of thgox 9jc8 k 6b./qqjnlrk+,gn7tz 6(qme funnel.

  Suppose that the build-up of fatt*j ,a18 tcjj(i i+wdfdy tissue on the wall of an artery decreased the radius by 8i c1jfjwt d+( ,jd*ia10%. By how 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 pan of water. Tube2mi -qp.ortv/7 ko a;u A has twice the diameter of tube B. If water rises 24 cm ikqpiuar.t;o- m2 ov/ 7n tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. Hg++ 6oymml4j,)po3mhdj ov w (ow high will water rise in a capillarmo )v4 jw+6dyomo(3pgj, hl+my tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rimbf o774z1dapov2 ou,se in a glass capillary tube with a diameto7 1mv2ao 47zu, pofdber of
0.50 mm?

  A narrow tube is placed vertically in a pan of wa8x- e*izra . z*ggmw3nter, and the 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 thn*x8z.mga* r3 -eigz we height of the liquid column in the tube?

  Consider a rectangular frame of d:l6kpvt x eb;6j-5a ulength 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 6 - lxau;e6 :tvpbdkj5N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has lengtfo+x (ts/imj) ys,h0 b4b/ xolh 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. Soapy water has surface tension 0.026 N/m. How much work is requireo0 mxtsxy j/b+ 4iob,s)fh l/(d to move the adjustable long side so that the frame is 12 cm square?