The three common phasesnmq)7 bu ow+b,gz);bb of matter are

  Density is

  Substance A has a density ofnqwv(k6:0,lm;fvax fupbse 97 )/jc4 o4wbyu $3.0 \; g/cm^{3}$ 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 followi(f.hx4ay;t en07e y ihng is not a unit of pressure?

  Consider three drinking glasses. All three have the same a6vhdn c2g1y2pg(nz3gpzc3r ro85mm(sg + b/ erea 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 watcg 5 mpgrvz1 em(spn23g 3dnych6 (z/2+b8ogrer 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 cal 4xaguyi8rh 20led?

  When atmospheric pressure changes, what happens to the absoluz-5lj 6yzh3 evte pressure at the bottom oe h63z zvjyl-5f a pool?

  You are originally 1.0 m beneath the surface 0 57qtcn3rbvd of a pool. If you dive to 2.0 m beneath the surf5 cdv3t7r0nb qace, what happens to the absolute pressure on you?

State Pascal's principle.rtte) j (l xe.eu4fm,0

State Archimedes' pri-l9sgrluu 67 knciple.

  $50 \; cm^{3}$ 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 denb7.z+y7( pt wdvv -wivqoy,6vsity, what happens to the buoyant fby+p iqz7y-o(v6vv ,.vwdwt 7orce on it?

  Salt water has greater density than fresh water.7s7p49qi3( wcgkuyzsta6n) p A boat floats in both fresh water and in salt water. Where is the buoya)ss4p7 3a (7qigktnp 9c6ywzunt force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh waterj zvvtz 2 iruqc5k54.* and u4. r5qczvvk2ti *j5zsalt water. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in m,+xsl7 -v8;7sczsahyg-mb- vp k f3l a pool of mercury. Where is the buoyant force on the ball g8- lvz -m3 f7;gks7acssy-mp,v hl bx+reater?

  A 10-kg piece of aluminum sits at the bottom zp 8.ld1p xd+lp,- rc8s bjle4of a lake, right next to a 10-kg piece of lead. Which ha8p- dbl84 esjp,+xlcprld 1z.s the greater buoyant force on it?

  A piece of iron rests on to 0h9pdz z7 wt5qg7 d)f1mrnxm9p of a piece of wood floating in a bathtub. If the iron is removed from the wood, mz ft5pd z0h rmx7qgd)17 w99nwhat happens to the water level in the tub?

  A piece of wood is f0n.43kfg-kyi x58fwjl b iya0 loating in a bathtub. A second piece of wood sits on top of the first piece,yfkif58 4w3 k0n ax-bg .iy0jl 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 p 7,co0hkowf enhb./ c7 z(rj0n- xi)seoint B is larger than at point A. Where is the speed of the waens(r7. cho00n )kj 7cb/z-hf w,xeioter greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the 3ee v*p(wvi njr jk8+,k csqk2u:d( l1pipe widens to twice its original radikiv(( ,pr+s: kewu8 k 1*leq23dcnjjvus, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s9y1yf)lh d: an in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the naf:yha ynl1d 9)rrower section?

State Bernoulli's principlvvfhyf6k;:7 bon) c m,b4 29tyvkod2he.

  Which one of the following is associated with the r3f6 ,vx+htjerh2c8 elaw of conservation of energy in fluichj+eer r t,hf vx3268ds?

  As the speed of a moving fluid increases, the pressure in jnp4 l: m*p)atthe fluid

  Water flows through a pipe. The diameter of the pipe at point B is lar p4u0.hxqcy( kger than at point A. Where is thx .uqcy(pkh 40e water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This /6hoeqsac64 pozt.cso 3 7c)g is because

  A sky diver falls through the air at terminal velocity. T88asc8il*zf q:ef0l phe force of air resistance on him isffp aq s*zlec808:8 li

  Two Styrofoam balls, od(uew1tp;. sg f radii R and 2R, are released simultaneously from a tall tower. Whichpe1w .gs ;t(ud will reach the ground first?

  When a small spherical rock of radius r falls through water, it experienc2mem k-ab/y8i es a drag force -/k8 iyb 2maem$F=arv$, 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 e pwim1dr83o) 6 uxozij61ij)s ffect on 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 rat66 ouii1po1izj))sd3w m 8jxre?

  Two horizontal pipes are the same length, but pipe B has twice the diacb/vlzy;f i7npr b;wq* 6 4pm*meter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipei qpwbv/bm;4c* 6z *7;yfrpnl s. If the flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diametery4h3 3/zy csou, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipe/you 3hc3 sz4ys, subject to the same pressure difference across the lengths of the pipes. If the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, i4 a-r*l7b(d dwgqkpf6 t often tastes 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 "physikers", 6 addl7wgqr4p -*fkb(this is readily explained in terms of

  When a tube of diameter d is pla;ga/w e2.ezsvced in water, the water rises to a height h. If the diameter were half as great, how high would the water rise?ve;a w/2sgz.e

  Certain insects, such as the water bug, are sufficiently, g:jwjs +fpysyeno6t x3c14+ w;zt1v lightweight that they can run on top of water without breaking the surface tension. Wat;1e3 t + s gywotzsvf+wy:pnj xj1,c46er 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 is the weight of bug B?

  Certain insects, such as the water bug, are sx .1)g5:.tmpclz 4wodlhr 8+qhh7 qfoufficiently 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. 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 dpc t o+z.4hl5)omxf81q7. wqlhrh :g B?

  A plastic block of dimensions 2.00x*; v-grp id be)hz5 2f7yy2rj cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. Wyy e7pzhixv2 d)gj -r2brf;5*hat is its density?

  A liquid has a specific gravity of 0. 0qbawdn1 :iw4357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 .mn9oe76xu ikxv y0q.qbb/0v cm x 4.00 cm. What is the maximumvu ebv7.6qm09q/i. nbk oxxy0 pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. E/i( w1h/73pcj qddg3 mtmtu0l)v0 jr;gc( idfach snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depl8sg ;1zad1ef th of 120.0 m in the ocea d11 ;la8efzgsn?

  A circular window of 30 cm diameter in a submarine can with yiktu0ms h7na1-1 szo9 tb12g tu.(fustand a maximum forces zusg0 b1-ft ykhm uo(172i.9ant1tu 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 if the a+,f xhtj* kt1ubsolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m bel 3a i/nioxu9h.ow the surface of sea? (The densa9 oxu/ni .i3hity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m bell )/a)b nlq3k:1bg wecow the surface of sea? (The density of seawatek 3l/qc abg:lw)n)1 ebr is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic ma.9 liy)jus(qdchine. The small piston hasldqyu()sij. 9 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 fhdbtv2901 gga radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the tdgfh1 29bg v0small 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 hydraul6nfr)t:nmf-no +g 2kg 6h tmj8ic piston. What force needs to be applied to a 5.0 cmf2og+6nknfmh)j gt 86m nr- t: diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its largtnq+ncf1,d0gtpv-pq + dqx94 (o tub+e piston has a diameter of 40 cm. Theqx n p+p oq09 qg,b(f4+vtcudt 1d-tn+ 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 gv;ih ,x ppi/(N in water. What is the buoyant force of the water?pp(x i,/h gi;v

  An object has a volume)6u iky8n : r x7gy)) scdq;nnl;ugt4n 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 subm6:-g1(jve) mf zbkgn lwzu/ c,y bj-y*erged in water. What is the tension in the string? (The specific gravity of iron is 7.ye n6gf uk,ylm bj-)1 /cw-j*gbzvz(:86.)

  If the density of gold is0 riuyq 2p:(hzd 5j8hw $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a stee22+ v,qrwrbp( ps/oblgc+ m3 t.4rq rrup.3jn l 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 6.86 N w s3(r*cl z9a+cxeq m+phen it is immersed in water. What is the specific gravity of 9crmacep3+ +(sl* qxzthe object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a 2/ / y* c/gd*ujhr)cwam 69:(gibjmm)zaj 1ljz0-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into g/c *j)w 9hldz6y: /bj* /cmr zamuam)gj i(j1the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a;gy5s,rgsj,ny s8:ic mass of 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 length 12 cm and diameterksu w7g dr.h,5 2.0 cm will just barely float in water. What is its maswkd7,rhs gu5 .s?

  A rectangular box of negligible mass measures 5.0 m long, 1 wv85vo0 xh)cf9a(5uk5- x.xdo g ynne.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a lak-5o)5xv(f eau g yxkcdvwn50.9x o h8ne?

  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 theaq36q axhc/djq1ejx-s ,f.8 e surface of the water. The weight of the displaced water is 2000a6x./dq-cjef xjs,81qeaq h 3 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume bene cctqu0la7x fq.yc far: m:uac*0d.5+ ath the surface. What is the oxf5rf cq .qcdal:.tac*mu 0u +acy7: 0bject's density?

  A 200-N object floats with three-fourths of its volume beneaa ow-lqg/;l4r) r-s+vr j6un;4 pxuqw th the surface of the water. What is the buoyant force on the;lvopqn/ gj;r 4 rxsa wr-+lu6q4)w-u object?

  A polar bear of mass 200 kg stands on an ice floe 18w6 xa9f919mrx xuksp00 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specim rkw996xfsa8x 1p9xu fic gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of di l ff3tm47fh6wameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 x 7t1t 0rg3qkui7a+sn cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this restrictqa7ur t1 ix+kts 0gn73ion?

  Water flows at 12 m/s in a horizontal pipe with a presws 8+ f0o/uzqqsure 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 dr.l*dth b; za3hinking fountain with 300 kPaz hb;l 3thd.*a, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank th)hnc w:c51tor x+h*ieat holds water at a cxe5):1n h*cwthr o+idepth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sedmk kt8giai9w*law8n;84b lo y ,p3;e ctional 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(*,bg:px 3yk9qrc 6 v/mnohfi it take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diame*hn/okp (:vx 9 g ,3mfq6ribycter? 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 ondwym48;z0vgk q.5sx eb ug6.w 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 consta0v6g5..ewzxg buy 4km;sw8 dqnt blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the dian9 yx9qa o( wivit*)s*meter of tube B. If water rises 24 cm in tube A, how high willn*tqo()9* 9asii w vxy it rise in tube B?

  The surface tension of wat +;hb,vfmv(ehzc+*qash- 98 g i-t fpter is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.-b, cpf s;gthf+*zq9h (evt vi-8m+ah2 mm?

  232

  To what height would water at 0 degree Celsius rissgst6zep))(v e in a glass capillary tube with a d)tzsg(s6ep v )iameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water oa( qwfn1.ka)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 liquoq .)(n kfaw1aid column in the tube?

  Consider a rectangularn 3i0lg0zd (ws frame of length 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 0.026dz lg0(0is3w n0 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has le)u3p 9 4o wmlg4i;yuxy ,kgxi)ngth 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 woy),i);u49 xlgipw 3mou4x kgyrk is required to move the adjustable long side so that the frame is 12 cm square?