The three common phases of m hy czpug70qo ubkg:ko+6) f;8atter are

  Density is

  Substance A has a dens-c*dek b:,krd/q ,rhsity 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 68da*iidx6(n smw:d w not a unit of pressure?

  Consider three drinking glasses. All three have the same area base, and all t2nw5icl jfm2g5vv28 q u1i8f ihree are filled to thevi8cqf 2525j vm2i81 ig lfwnu 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 liquid pressure at the bottom?

  What is the difference between the pressfyfb4)r6ia 2 pobcrt+bk0 q-;ures inside and outside a tire called?

  When atmospheric pressure cha+wyikx/:v0 ctpeo xjam,rz7vl/.( w .nges, what happens to the absolute pressure at the bottom of a poolkzt/.oac7(yexj 0 xm +rw: lwip,/vv .?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.0p02qy; 7wwgvy7l zj gq 3x)v7e m beneath the surface, what happens to the absolute pregg3vv7ey2w7 0w qljy xq;p 7)zssure on you?

State Pascal's principfx l2e-bh iplws +;9:cle.

State Archimedes' principle.dfy89 1k rn+;4 rqlmxw

  $50 \; cm^{3}$ 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 hapl p+/m+y aqwi9pens to the buoyant fiqm+w9/p y+la orce on it?

  Salt water has greater density than fresh water. lhu5tc9f9b3hq 6ygzg2 f-1ld A boat floats in both fresh water and in salt water. W l yd51f69 3hbggqfzlt2-uh9chere is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A sh+x nvrx1bh34lq ,)iye ip floats in both fresh water and salt water. Compared to the fresh water, the volume of water dl4+ x h ni)3,q1vberxyisplaced in the salt water is

  A steel ball sinks in water but floagmfwi.e4 00d xts in a pool of mercury. Where is the buoyant force on the ball m4d giw0.ex0fgreater?

  A 10-kg piece of aluminum sits at the bottom of a lake,k9za40dwt to kw(ob7il(;u.g right next to a 10-kg piece of lead. Which has (kl0w4(iotu9.z 7wbto g ka;dthe greater buoyant force on it?

  A piece of iron rests on top of acgxq swhgqg *z7ry: :i,/9y1 q piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in thhi*xy 7zq:g,g:gq9r yw sqc1/e tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top o ;10fs3.uc:y9 f+famt2c rq-xtetvcv f the first piecqeft;.: tvyv+c2-fc91 u s ftmc0 x3are, 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 pi (kzc(km;ihd2 kj/a c.pe at point B is larger than at point A. Where is the speed of the water greater?cckh kka;(2j .zi/(dm

  An ideal fluid flows at 12 m/syh5 t+kpxc rh7 q6,t0f c71bum in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed ibk7x +h0 16fp7 utm,qc5ch tyrn the wider section?

  An ideal fluid flows at 12 m/s in a hn iy h2d 8euz/tfdi4us1k;d o33( 5myyorizontal pipe. If the pipe narrows to half its original1u/(yztn5imu ;fiey dd2384 k h3so yd radius, what is the flow speed in the narrower section?

State Bernoulli's primc p r+zhv) 3:lklt*;bnciple.

  Which one of the following is associated with the law of conservation of energy het6 )+ecj6hhin fh h )heec6tj6+luids?

  As the speed of a moving fluid increuho w cm(a+p(3rrb7,4e st 6xzvy+f5hases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipt ;8k81koasv ce at point B is larger than at point A. Where is th tok1v; a88ckse water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is becausetr6k6 a*;+p(dwid nv k

  A sky diver falls thro j7iqn0dg vm*(nic, u/ugh the air at terminal velocity. The force of air resistance on hin0ii cj*uv(d/mnqg 7, m is

  Two Styrofoam balls, ofj,-yqt/ j;bg2u z jhk* radii R and 2R, are released simultaneously from a tall tower. Which will reach the grou *g2zj /jh-qb ;t,kyujnd first?

  When a small spherical rock oss ) ,2d(sgtgbf radius r falls through water, it experiences a drag forg, stb()s2sgdce $F=arv$, 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 daef;(t 25v zjvhg- o5fvxk+/p(qi a .of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause thd5(k - qavfhig;+jzaof2t5 (./ xvpv ee greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe rkp1 bn3k1z; 8sy.ptj 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 fl3 ktps z;8j rpb.n1yk1ow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe gsmffbmtl (no+a/ty e u295) )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 t9l)gtoem)a/m +t su5 nyf f(b2he 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. This "greasy" t86uck a rmhgv*j2nk /pk u,c*9aste seems to be associated withcvkp/gr ujhk ,a*k89 u*m6nc2 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 diameter d is placed in water, the water rises to a height je jbaf 8 jtvc)xy6(4 66xabam+sj38k h. If the diameter were half afj36(ac8s6ja4ejxxm8 vyk6 ja+)bt bs great, how high would the water rise?

  Certain insects, such as the water bry bjsbk4yi 2m9u;agv67)c*+ohjp *dug, 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 ;r *7so6c*4jd pg khm2ayvu)yi+ 9jbb big as bug 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 as the watezq-a+fmkb2 zbq+mjgijbob 85 8nb 3/-r bug, are sufficiently lightweight that they can run on top of water without breaking + aqo238gmbbb-58 mb/ fzk -qjnjzbi+ 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 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 o n: w2ngye6)vrkg 3fb45r a vsrjo0foxt0-d1) f 30.0 g. What is its dejrbw6ra g:svk)n xgfdvo )f 0y5r 2 n0e41t-3onsity?

  A liquid has a specifi-y(nlbh ody 0f:/o,nvc gravity of 0.357. What is its density?

  A brick weighs 50.0 N thxhvs0pquva(s n4o36 2qg75, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exo( g632xs7s h qthn4upqav 5v0ert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has are1f.(/3tjs t twir /uaya $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0jwwaqn)d. k fjs-t+q6l ( mm:v66x g:n m in the oceln v+.6j q-: t xdm6)(fkwwjn:qsmga6an?

  A circular window of 30 cm diamw)mbaoqf4d hbl, dt ,m (13j2pzib5 y)eter in a submarine can withstand a maximum force of bi43 mo)mdbj5(ylza),f2tqd1wh bp, $5.20 \times 10^{5} \; N$. 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 ztmm0pf +5; rsiz6o;pbih.n4absolute pressure is 300 kPa?

  What is the gauge pressure at a loca.kzk2v *tbziy s.65/nqx/ l kqtion 15.0 m below the surface of sea? (The densiy/n* 5k zklq.t z6./qsv2xk bity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m be7mliyx5 0xihk i/m9 1wlow the surface of sea? (The d m /yh1kxx57ii0iw9mlensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. e cfzu 87dbo/6 The small piston has area 6 fe/d78cbz uo$2.0 \; cm^{2}$. 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 cm and th4nu jmxv;ugd**c1;w6e uinw 1e large piston ha i6w*v1w c;muen*uu 1gj x4d;ns 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 the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diamer6eb)0w1g /9t rvs2z(olsm o jter hydraulic piston. What force needs to w6r )lb/tg( 92jv sso0me1orzbe applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm4 bxb 88h8zb0vb*oiyq3qc f.u, and its large piston has bqqbfyuxbohv.z804ic 8 8 b3*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. vqq3m 2 re,,ucugb7b. lq0u5e What is the buoyant force of the waterr3ub2qelu , v ,mu7b e0gq.5cq?

  An object has a volumb4wj3i1wqbkwj 9 .)ol58gaxm 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 by a string while h v/2b*s y)* sxgwrb0qd *yx6isubmerged in water. What is the tensioqh** xyb0*x)2ybdws6svr g /in in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is je50sfu)pfz.q d,n k2 $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (de:r/vfqqns7 dn6uze n x6*j/;mnsity = $7.8 \times 10^3 \; kg/m^{3}$) 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 6vz (ap(l)1lp q.86 N when it is immersed in water. What is the specific gravity of the1qv(ll)pa p( z object?

  A container of water is placed on a scale, and the scale reads 120i.xfrms;3-s r;fk 8 nn g. Now a 20-g pir .;8f-nrsisfm;x 3 knece of copper (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 ofhu om5vucjr+1iuk4p*/z )bx4 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 le2 2l hzek dr/x)-:;ti6yimbl.h/,zlndmuho -ngth 12 cm and diameter 2.0 cm will just barely float in water. What is its maby;t2 hd.h il 2dh -)zmm,-n6 xr/ozil :l/uekss?

  A rectangular box of negla.:m 4q t8vek fu1nsz1zerl;5igible mass measures 5.0 m long, 1.0 m wide, and 0.50 m higha1e5 q;8.lr:snez t1kz4vumf. How many kilograms 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 t iu sckp:6w289a:lsm yhe surface of the water. The weight of the displaced water is 2000 N. What is the weigh8ss6lpk9mcyaw u i:2:t of the object?

  A solid object floats in water with three-fourths of its volume beneathc200n+ xop+ bdzqw(q ebm.yo1 the surface. w0+m b n.o0c 1+2yzqqdexob (pWhat is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surface w7( ,,4bdlhctj / ymeemc1g 2tof the water. What is the buoym(y le4eg, ch1jw2mt c /dt7,bant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm o x:1jlm9no d0thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0xomon 0lj1: 9d.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find thedby1o1 q h 60lme9w3hboqjg/3svb33h flow rate.

  Liquid flows through a 4.0 cm diameteroploe t(crk61nwmia+fxov ((du 7/(8 pipe at 1.0 m/s. There is a 2.0 cm diameter re+omi81 tf rok(l( x7( 6o vwnpeuad(c/striction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a hortss wh0:py3 7eizontal 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 doe1cpbjc i- 3vs.s it take for a pump to supply a drinking fountain with 300 kPa, if the focc- i p31vjbs.untain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tn3lsc+xz3t (x ank that holds water at a deptsz+l3txx (n3ch of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sec )i d:k vhkl)8ma4qh +i/v-xnk6r+mjutional 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 tgpx:dg *yg6o,ukv -dcs 0)lf(ake 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 abov(d*-x:c,gg 6 gdk 0fvu)psyo le 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 i9ia /4rnsn-l3 (fai crq 6n3tof an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increaset39n-/3 iasnl ( nq4rf6rii acd to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A hasyh8e58krsa 1pc1 betz d13:rs twice the diameter of tube B. If water rises 24 cm in tube A, how high will ittd1r3e rc8ka 8ysz1bh spe 51: rise in tube B?

  The surface tension djd(q -a-3smxag 1o ;bbm4s2oof water is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.2 1s-bx4gs oadm3;d(ma2oj q-bmm?

  232

  To what height would w55a sqiq/hpi,v :e; haater at 0 degree Celsius rise in a glass capillary tube with a diame5ph5 qv ,a:/hsaiq ie;ter of
0.50 mm?

  A narrow tube is placed vertically in a pan ofj3 xf brbhrh2q/,)jk1,gih j; 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 )rqjj/hb1g,x; k2,h ifrj3bhsome soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.lm5 cq- 4fr1sf120 m and width 0.600 m with a soap film formed within its confined area. Iff-1fcs rm45lq 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,dq rdgj fn(2r9.:x at 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 required to move9rx: f.ga, rq(t ndd2j the adjustable long side so that the frame is 12 cm square?