The three common phase2g7 yxosep3u -s of matter are

  Density is

  Substance A has a densz 3 brda9zf)qj:6 fx+:fljs6tity 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 a6( ltx:bi7 svk unit of pressure?

  Consider three drinking glasses. All three have the same area base, and all::zur,(k/r b, vr ,cqqw,esqe three are filled to the same depth with water. Glass A is cylindrical. Glass B is wider at the top than at the s ,,qu:qe,erczk/q: (,rbvrw 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 the bottom?

  What is the difference between the pressu-:mc lqwc sm38res inside and outside a tire called?

  When atmospheric pressure changes, what happere zlgq(q3 :c7 e,l jffoy9*5ins to the absolute pressure at the bof9q,f(io: 7e*g 5c ejzlrq3ylttom of a pool?

  You are originally 1.0 m beneath the 8w irog z v-i437ztgd(surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute r4givdw(8otig 7z3 -zpressure on you?

State Pascal's princig n d9r*z,t2oiple.

State Archimedes' principl*.bwndt )i*bu.4l zctb a:wk:e.

  $50 \; cm^{3}$ 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 happ0(sgu+w2u oq 1x nr)blens to the buoyant force on(swr)+0buq ux2g l 1on it?

  Salt water has greater density than fresh waten/ ia,tjby/: dr. A boat floats in both fresh water and in salt water. Where is thb,//dt j:i nyae buoyant force greater on the boat?

  Salt water is more daczfui/xe7/jx xn :f2p9 9h j:ense than fresh water. A ship floats in both fresh water and salt water. uci xh9jxp x eaj2z9f/7f/n:: Compared 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. l:h;7k ny57qc(zx (ngtnq q8hWhere is the buoyant z 8;yq(qx :hh75k (lqn7gnnct force on the ball greater?

  A 10-kg piece of aluminum sits at the bhvd4q cfl y:7nb(84essia 0 -nottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyant folnvy:dqs7cseba0 f-4n (4ih 8 rce on it?

  A piece of iron rests on topeeim4 ;t1 m9dx of a piece of wood floating in a bathtub. If the iron is removed dex;imm49 te1 from the wood, what happens to the water level in the tub?

  A piece of wood is floating in ar.k( ;5/otmsvnb ydxq vmh;) : bathtub. A second piece of wood sits on top of the firstxkmh5). o:vdyvqn; m(bstr;/ 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 the tub?

  Water flows through a pipe. The diameter of the pipe at ra:l :.qv, :m m68ua)8.exbswf mhbtfpoint B is larger than at point A. Where is the spqs 8t.f:).xmemrha8m6bv :wuf b,la: eed of the water greater?

  An ideal fluid flows at 12 m/s in a ho.lvi heo a;p6( bcfnio92 8dy)rizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in tychf 26()pib;8lne oodvi. a9he wider section?

  An ideal fluid flows at 12 m/s i*.bs q5iouic9 fy 2k+en a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower sectqfoi.5se29+ uiky*b cion?

State Bernoulli's princ4h7 +lzjis vv;iple.

  Which one of the following is associated with the law of conservation ogu d5elv-6:ywi rqd6 8f energy in flw6uqlr56g y ievd :d-8uids?

  As the speed of a moving fluidpg pfjq3.*,2c8/c1 fp kies+lylnx-m increases, the pressure in the fluid

  Water flows through a pihrr89 b(us kqpt5a .8hpe. The diameter of the pipe at point B is larger than at point A. Wha q ursr(98h.hp8bt 5kere is the water pressure greatest?

  When you blow some air above a8 g/jwx0,zub z;-a mma paper strip, the paper rises. This is because

  A sky diver falls through the aw7e9 sa : ray;l,kzigaz3-u0lir at terminal velocity. The force of air resistance on him isuzral lwagz ak:93 y7; ise-,0

  Two Styrofoam balls, ofo g9bnn6z4j8n xtz .x. radii R and 2R, are released simultaneously from a tall tower. bnx g.x.no4 nzj89t6zWhich will reach the ground first?

  When a small spherical rock of radius r falls through water, it ex pt v6j7:6guix o,(g:vlupke .periences a drag forceve. 6kouut:l ,vj i(p 7g6p:xg $F=arv$, 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 narrow pipe b,i5nxe: b gt-jq,-ov? That is, if you-nqo i,b5 -gt:,ev bjx 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, but pipe B has twis10u.2sateq ldq9hbzv 72 ewwd 8.n9xatr/ 0gce the diameter of pipe A. Water undergoes viscous flow in b01 9d d9hbvtqusxas/7 wg82. rwl.qtaen0 ez2oth 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 4 -dxxj19qj( 0d41qbr.xthgculzww-, 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 th(-hutl - d1c.x gzj jw0b4qxqrd19xw4 e 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. Thqerrw(-/z v ya8+ *pzj xvo:m9is "greasy" taste seems to be associated with oil spreading out all o q rwj zzrea(8/o ypv+v:*x9-mver 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 diameter9*sx v04ff4salkf59ma n uik+h- 2vw l d is placed in water, the water rises to a height h. If the diameter were half as great, how high woh if9a+5 lkm k4f4 w*fsn- xv9su0vl2auld the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that 63wv4eq- f jbcthey 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, twice as wide, etc. What isc ef w-q6jbv34 the weight of bug B?

  Certain insects, such as ( z( 7v 5n.+p;bzdp:menhkngathe 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 ;nvgdz h(nz75 n+mp(:a .bepk 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 30.0 5+b.*ne.p,hwf d/+c nihs cvr1ju cz1g. What is its densiwj.. 1 bc ch+prhev5z niufn,/c*1+sdty?

  A liquid has a specific gr d( ;uw;3+x+unzzf tmqvkbq0,t5et+davity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 *1sj.+ji f hpccm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surfacs1*fjj.h p +ice?

  A person weighing 900 N is standing on snowshoes. Each snowshoe htkt1ix:j4 nc: ,p *glxas area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a dept3 nnn */ /nfocisa7i8/7v0kgxcnou qc -+hi7th of 120.0 m in 37uiqn7ch0i+n/k gn*n/ so7 axt/o c8cv- finthe ocean?

  A circular window of 30 cm diameter in a submarine can withstand a ma3;vk 51,pkyrmiil /hj ximum forcey pm, 1;hk/5jril 3vik of $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure c1flcw.is00r) qd3(d ln pyt;if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 mbf2 :z aoae-f4 below the surface of sea? (The densitzf2a:- 4eb ofay of 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 pflzoso+m7yhdx87l *mg-i: 5 sea? (The density of seawaterm7lf8 s zm5y+- hl7oxpd igo*: is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a s ztbfock 8x4b.+tpd6 h88,jt3bc n 3ohydraulic machine. The small piston has ar 8 +jf3tposx83dnktbc.c6,t8b b4h zoea $2.0 \; cm^{2}$. 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 hae abeyw:06ve-ndbf .9s 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 lift a car weighing 20,000 N on veb.- :bn 9we6yedfa0 the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulix c/ye+1r3mr5vy s5bv c piston. What force needs to be appliedmv 5r 1cys+rbv e/yx53 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 9)jclmx: aukt.3xe2iits large piston has a diameter of 40 cm. The lift raises a load of 15,0009t :lmuei32kcx.a) jx 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 watei*f; kq6 o8j-;l lrqdk9dr v)hr. What is the buoyant force of thevq irl968r)d- d ;lhjk* qko;f water?

  An object has a volume ofm m8iimn: : d*q4e5uxb $4.0 \; m^{3}$ 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 submerg pqsa0-q 7.a8pp3mm;fx,y-yv xvqq3 oed in water. What is the tension in the string? (The specific gravity of iron7 f qy op 0.8mmx s,;aav3-qxpy-qq3pv is 7.86.)

  If the density of gold is h)a-nw ssn +psa c(;x,4sm/uw $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submaria)l2 pobj9bz tb1 :1ctne (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 ;op/s,3uv8zl-a(su,. mey ) u7ploo w ky8wspN when it is immersed in water. What is the specifsl(ke .)upyss;py38u , oz7pvoo8/m wl w u,a-ic gravity of the object?

  A container of water is placed on a scale, and the scalqwc7x/0crz,)xm + duie reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a tmw )x7 z+rduc/0i qx,chread 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 qof4zjpcn5 er8h-y- ,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 anud qxsyx:.h du 2gnk3,v50mr /d diameter 2.0 cm will just barely float in water. What is its mass uk0,r:n 3d.ys5dv/ghx2xm uq?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and mwp6f k qm;24fx41bxc 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a lak f42xm1 kbmwc ;pf4q6xe?

  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 m32* 9sr1d )kaxfl pyxctr/2aits volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of af*c3/kl29yxx 21drrs ta m) pthe object?

  A solid object floats in water with three-fourths /f-9 kq/ qixk dt*r4izof its volume beneath the surface. Wfq/z/ d 4kx*ri-kq i9that is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surface ofr* z)rb2l h:fj the water. What is the buoyant f)zb :rlh2r *fjorce on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the muw hfhx383 1g/ tlmi,minimum are3 mg,hwm t/1 lxh83fuia of 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 pz )jij(yh6wu v/5hj.ys,u tb:ipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pirsx/4ud3nq(cybx;a0 n*vbkbn* 75x k pe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. xkn/( ra x435*ybsduknx;bq0v b c7n* What is the velocity in this restriction?

  Water flows at 12 m/s in a howyc; jy.et *e7rizontal pipe 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 take1rhua/vfnp04+:g xk y for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the arhufx4n+p/v0 1:gy kpump?

  A hole of radius 1.0 mm occurs in the bottom of a water storagi)ri1( o pk.sf.9rqhr(ktoz5 e tank that holds water at a depth of 15 m. r)(s hq pi.k1(rfor5 izk.t9oAt what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional ar/a1jh)5bz i;kn+eqg eea $10.0 \; cm^{2}$ 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 w4 sp y tb r)32/daeqc51did(fnould it take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.t a4)sydc5dfpei(/2dq 3r1n b0 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.

  Suppose that the build-up of fatty tissue on the wall of an artery decreased tl+wtd. b i i;-nj5ll+ahe radiusllidnia5+ j. + ;tbl-w by 10%. 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. Tube A has c7:y+vyc016 eb13 wrkg xjvsitwice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise in ivyrc1x13 :g+wj6e 0kyvcsb7tube B?

  The surface tension of water is 0.073 N/m:4ebu ex5smjpyvle37: y1q o83cje)k. How high will water rise in a capillarcos e5pv k33y y8bx:umqejje 14)7e:ly tube of diameter 1.2 mm?

  232

  To what height would .*ivgwt* mo itv(hig;5qo .b5 water at 0 degree Celsius rise in a glass capillary tube with a diameter hoq;mg**vv.i(. t ib5oiw 5g tof
0.50 mm?

  A narrow tube is placed vertically ,+mo3 nq:ywjlm o3ug*in a pan of water, and the water rises in the tube to 4.0 cm above the leve, wn gqu3:y j3*mlmoo+l 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 rectangular frac/rfbd t*yf7ez-:q ;rme of length 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface tensiot/:-z7cf yd ;*be qfrrn 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.7 nd,yivju h ly*;ge9pu0o.k 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 requiredoy. kle7;j9h ui0uyd. , v*png to move the adjustable long side so that the frame is 12 cm square?