The three common phases l - 9fzxgusz16of matter are

  Density is

  Substance A has a densifg pv6j:v:rp+ izy:jvs3 iy.*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 xw,nim3 d2;crunit of pressure?

  Consider three drinking glasses. pvszyay ) c 96t/;rmt 3zuq/n0All 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 Csn a)ptycq6;rtz3yu 0m9v/z/ 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 betqpsk .3 5ispyh cp(9u.ni94lo ween the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the v4qlefml) 6q6eo +h6g-lc z8i absolute pressure at the b-m8ll h6gco6e q4 e+zqliv6 f)ottom of a pool?

  You are originally 1.0 m beneath the surface of a pool. bsz4(c )dkfwl, fe :whn j*+h8If you dive to 2.0 m beneath the surface:ef)wkf* wz+ (hjnsc4d,8lhb, what happens to the absolute pressure on you?

State Pascal's princ rhky7ern(o*j+9 j:i niple.

State Archimedes' princi 5: jhyv4dl(3b3ngwnfple.

  $50 \; cm^{3}$ 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 in ) 1cy-bbq(cpzoj+y3kto water of constant density, what happens to thebo) q- 3c+zbc( 1pyyjk buoyant force on it?

  Salt water has greater density than fresh i c2s(fbk+8ml2p+oam water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater on thepbmi28o( f s mck+al2+ boat?

  Salt water is more dense f )xsbhzzy/-hfr9 c0-c 5g lt4than fresh water. A ship floats in both fresh water and salt water. Com)/zg9chff4lbzs t-r0-hx 5 cypared 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 mercury. Where msad5p;4ls: h/bak h2 is the buoyant force on the ball greater?2kd mpa; ah:bls 4/hs5

  A 10-kg piece of aluminukx e:yh eop1/cn8fyd,p* 3f3 om sits at the bottom of a lake, right next to a 10-kg piece of lead. Which has the greaterp3o1/cpf3xfeeyohd*: 8,kny buoyant force on it?

  A piece of iron rests on top o.f3h gt n;u.wkka( br:cq +4 ubu4t:ohf a piece of wood floating in a bathtub. If the iron is remuf: otk+.hkthrc gqbb. 3wu( ua4n4: ;oved 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 wognmo,i)w. (ti od sits on top of the first piece, and does not touch the water. If the t gt)i,( miwno.op 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 pipe at point B is li75sth6 -psg yarger than at point A. Where is the s 7ht6-gis pys5peed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Ifu:m nuim5vf )w x8hi3cm/ g dzt*/-6lu the pipe widens to twice its original radius, what is the flow speed in the w/vmdgxz-u6583mmfhc: uu/ ) tl*niiwider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to hn;pxem9utla2k 7gxw4n/0d c ( alf its original radxa7nw(;n9 kdlg 0mp2/tce x 4uius, what is the flow speed in the narrower section?

State Bernoulli's princi:hta r50oflq d+pid(w+u6 fj1ple.

  Which one of the following is associated with the law of c6owujeu a1 ul923q fz0i** toxonservation of energy in fl26et1uqf l aijwu0o*x 3u*zo 9uids?

  As the speed of a moving fluid increases, the pressure in t 1-y6 pfk5gyy w,crzh.he fluid

  Water flows through a pipe. The diameter of the pipe at point B i*+njwx3s:y jng hs 1m:s larger than at point A. Where is the wat*yg hwxj: jsn+s3 1:nmer pressure greatest?

  When you blow some air abovem1 obar lka0t*8j*e*zz*t(e e4 mu8 sf a paper strip, the paper rises. This is because

  A sky diver falls through1+(p zmwgw*napsjz, w; z04wg the air at terminal velocity. The force of air resistance o*w ,w pw zwzg4ms0apj(ng+;z1n him is

  Two Styrofoam balls, of radii R and 2R, are released simultan um)gyg.te fyxxm*.:. eously from a tall tower. Which will reach theg :e)x.yfyg . u*mmtx. ground first?

  When a small spherical rock of ro0s 9t(vtd6 ae. 1zrwd 6x,otvadius r falls through water, it experiences a drag for. at ,vrev6szt60 oo(w9dt xd1ce $F=arv$, 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 tyl6((pu ccum z n4lk c,/ ;y8ej;et5fqhe flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantitiu;y c4p, yk ne(cqmul 8fctj/6;(lez 5es below, which would cause the greatest change in the flow rate?

  Two horizontal pipes aj lvti37a up:w4.guj lg9 s;,xu; xtk0re the same length, but 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, what is the flow rj3 l pg; j.ulxs4t;x7tugv aku0 i9,:wate in pipe B?

  Two horizontal pipes have tz4 a9ham4 n-sche same 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 pipe B is Q, what is the fl44-zam anhs9cow rate in pipe A?

  When soup gets cold, it often tastes(: m 98gj)64uqzh cg-uzq egvn greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of stayiqz g 4n( vmch8):96-ggzejqu ung in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in wate4tdb a1j1yob 0r, the water rises to a height h. If the diameter were half as great, how high would the w 4db b1a10tjoyater rise?

  Certain insects, such as the water bug, are sufficieneizjf x0n5d)ci el1c(yu1g89 tly 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 ic8 e z0in1lufg9c(d1ij5 ye)xs, bug B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the waterb7xxm j;9jb2 q bug, are sufficiently lightweight that they can run on top of water without breaking t 9qx 2b;jmbj7xhe 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 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 4.00 cm has a mass of 30.m.elxec96;-awi/bz pz(81i n mwrh mdb je--8 0 g. What is its density?8mncdwwmz ib lzm; -ehe8 rpj-9e(bi-./1ax6

  A liquid has a specific gravity of 0.357. Whatj c2p+ gslx5 :wbxfy6;r7ft8g is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the mce.lr.s8.xjuti qkk1, zm . sl9dy2z 6aximum pressure it can exert q d.my zsxj1.rzu 96 c..klk,le8i 2tson a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has .vrrb9q 6owp9area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absol( wi m-fll:-apkz,go(v:n g :cute) must a submarine withstand at a depth of 120.0 m in the oc- cmo,gw-i(lpal vg:f( :k zn:ean?

  A circular window of 30 cm diameter in a submarird+- hu6u o 0scca8(y4inoqf 8ne can withstand a maximum force of4rc+80 qhu6oodny (8ci fas-u $5.20 \times 10^{5} \; N$. 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 pressu rmds1txg,d k4s :be3g3z9mj1re is 300 kPa?

  What is the gauge pressure at a locatio 3n5s1kuek q :t sy2 e*m7k-ozlaxve,qmwh*,7n 15.0 m below the surface of sea? (The density of w *qh eq-ks:,uxzklm kyv5,1m eoan*t3772se seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressuren r+aom w*.e6n at a location 15.0 m below the surface of sea? (The density of seawatee*r.o n6ma+n wr is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small pis8j ,6q0u(qhjr: mv 8zi wsk7rl6un.kucv7s.fton of a hydraulic machine. The small piston hvfik.q,:8jhussv n6u 77mzr(6cw . q lrkj80uas area $2.0 \; cm^{2}$. 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 of 5.0 cmk(jebup .c f+8 and the large piston has a radiuu p(b jf.ke+8cs 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 hy0(a*wb mrky2p )opvume .4 ddj77mu3wdraulic piston. What force needs to be appliyj 2w.d vd kb*p7) m7meo(uwrp 30au4med to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its lqa pukwcj6 .(.arge piston has a diameter of 40 cm. The lift raises a load of 15,000 N 6uc jq(p.ka.w.
(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 i)xq)mi5l , a)x6wjrf un air and 30 N in water. What is the buoyant force ojixr x 6q5l)f,a )mu)wf the water?

  An object has a volum2*jppzeld/j0 (ty obw:j g3x4 e 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 b61p7qn ko )uegdwr0o,y a string while submerged in water. What is the tension in the string? (The spo6unwerd 017okg,q) pecific gravity of iron is 7.86.)

  If the density of gold i-naw8 c4bb r cfx*u7l-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 submarine (density = t6fcf ms 4e-n:$7.8 \times 10^3 \; kg/m^{3}$) 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 wheloz wagsj k* w.f7)(1n+m d6ovn it is immersed in water. agzs16w+7f*mwn. okd(lo)j v What is the specific gravity of the object?

  A container of water is placed on a scale, and the scale readx 8q674y,prhw,nsha bs 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not touchiny 6s,x ph7bnq4 arw,8hg
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg av; xry1sl2uz4b uj0iwk+ fnh/k7 6au+pvw0+bnd 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 di9,sw0 *yw, 5m hmspy 3wp*vvklameter 2.0 cm will just barely float in water. What ip*h, ym ,y3skwpmvvl905w* sws its mass?

  A rectangular box of negligibledz3tj5*n 1oknq hh3:c mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kil1h3dk5znqn3 ho*j ct:ograms of mass 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 th+zip0)eh7ruhhfj+ j fjv/53u e water. The weight of the dirfj+fh7phj3z5v)uhej /i u + 0splaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths oy .:m)jbd pr)0e; mugef its volume beneath the surface. What is the object'r:.u geb 0p)y )mj;dmes density?

  A 200-N object floats with three-fourths of its volume beneath the surfaceb glp) c;p,i1ce9yt hu7plvg6js6- . p of the water. What is the buoyant force on t6g.7p6l yu1jh ,il vteps;g9 c)-cpp bhe object?

  A polar bear of mass 2001 kmi7 1bz:9fiqns 3 iyf 3c3uvyi, gn0di17qt kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The3n1t77 mi3n 9vb 10iuqi c:sf 1iqgk3yy fiz,d specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the .sap5 6bqjg+ldzo-wjnp oa;1 ch.6v 9 flow rate.

  Liquid flows through a 4.0 cm diameter pipe at q-b n91z4qqr2zpcvn /1.0 m/s. There is a 2.0 cm diamete2nrcqzn/ 1q94pbq- zvr restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wk/;akbm7tuy -pwo ) ,mith 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 p:x kdf *ghwc f25td7z7ump to supply a drinking fountain with 300 kPa, if the fountain is 30.0dk dz* fx5:cwfh7gt72 m above the pump?

  A hole of radius 1.0 mm oh 2 pjte7kx:m3ccurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of2k:3hx j7petm the hole?

  Water flows through a horizontal pipe of cross-sectionallf0cgu0k +; a;vdl1ng 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 pr8w4 iql/ ud-ulbvwlc 8a73,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 the funnel.l u w d7c8vpru3/4-wl,iqb8la

  Suppose that the build-up of falmn )yem0/ n1qtty tissue on the wall of an artery decreased the radius by 101mqme0y/nn l )%. 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 imx( ld/lu1d 2in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm /2i1uldl (mxdin tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a capild6mq(1 ,:q q( h1wk8lsk*l1ettek sqllary tube of diameter 1tks*klqw lm61qh lq1 k(d1 :sq ete,(8.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glafdun -znvg -gqhk2 +);ss capillary tube wiz+n2 v)-h- gf;dugnk qth a diameter of
0.50 mm?

  A narrow tube is placed vertical22nqu3mfx4x56i ak r tica r:/ly in a pan of water, 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 the height of the liquid column uk2n:qa4a5c2 fi m3r6/xti rxin the tube?

  Consider a rectangulxsg74iuc 70ozar frame of length 0.120 m and width 0.600 m with a soap film formed within its confined area. Ifxgz7uc s47o0 i 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 rectangular frame has length 12 cm and width 5 cm, and iszs:tqx-,gb)nsrl)6jssg* tqa),o a2 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. *tojt ss-xl2ggaz)q :na)6s,q)br s, How much work is required to move the adjustable long side so that the frame is 12 cm square?