The three common phases of m+vjkj . k8-bz; 4f1czxuo)ei gatter are

  Density is

  Substance A has a den5p rnidlvh7 , 1;e0nkxsity 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 pressqeeq.:9im aq8 ure?

  Consider three drinking glasses. All three have the same area sb59y4tj7-p.b lnv bi2vze. xbase, 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 C is narrower at the top than atypbnvsij2x v45.- 7t.bb9 zle 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 calleas:v /uz hgq;uzw/*k (d?

  When atmospheric pressure changes, what happens to the absolute press6u(6ow-s hw jfure at the bottom of a poof-jsw( 6wuh 6ol?

  You are originally 1.0 m beneath the surface of a pool. Icsr wf. d- 5jxt7d-k1qf you dive to 2.0 m beneath the surface, what happens to the absolute pressure o-15d.x j sfqd7 -kctrwn you?

State Pascal's principle.uw .ke 18d0fxlbhkb;)ct 8yz9obn: 2z

State Archimedes' pridon,.hje u1 9ynciple.

  $50 \; cm^{3}$ 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 deepeh :rlhir6ol8*r into water of constant density, what happens t *hlr8h6r:oilo the buoyant force on it?

  Salt water has greater density than fresh water. A boat floats in both fr fu0 d9bu2od9vesh water and in salt water. Where is the 2vd9ufdou9 0 bbuoyant force greater on the boat?

  Salt water is more dense than fresh water. A.aix4sl67/fg f 2ivu n- bine* ship floats in both fresh water and salt water. Compae *if7.4sx2-g i v6abnlnufi/red 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. Whl(b)oz/(1 9:ij9bnb / 0m cliglka cjmere is the buoyant force on the ball greate cll(/o(kbi19 bj:n) b/ 9jim0azmclgr?

  A 10-kg piece of aluminum sits at tk) on pyb5img z6*gix-.zb yr1xm jcz:x84e5 1he bottom of a lake, right next to a 10-kg piece of lead. Which has the greater k86 rmo:c1bzixb 4x5x -e)p51z ngyim j.zg y*buoyant force on it?

  A piece of iron rests on top of a piece of wood fl1:4mv );yy uaiy6d/ i9i*pv d(tkztof oating in a bathtub. If the iron is removed from the wood, what happens to the wzi9otk f6yvu*ydvm(ti1a:)ip/; 4d y ater level in the tub?

  A piece of wood is floating i c *3(fsnj(cibn a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If (is (f cb3cjn*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 diameteke pprvvt:w78k7u) b4 mp j;v9r of the pipe at point B is larger than at point A. Where is theem4wbpukv 7 k7tv v:;p jr)p89 speed of the water greater?

  An ideal fluid flows at 12 m/s in a horb24em n fdn n+v f()ir)-e9yebizontal pipe. If the pipe widens to twice its originafbvemn 9y2 4bn))d+ (e f-iernl radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Iftr4 sf j)elrxt +1tn jc*nd-)8;hqds* the pipe narrows to half its original qj1de8n *dxsj)4tr tf)n;h+ rs l*-ct radius, what is the flow speed in the narrower section?

State Bernoulli's principle. :ga2v+e(w /iy+locivm81ajq

  Which one of the following is associated with t.)clg z 4zhtco ju3bo 1f7/h9vhe law of conservation of energy in fluidsogh)j f4ovu7z /lh 3z.9bct 1c?

  As the speed of a moving fluid incrawbr7g* o1mph 3.h (oyeases, the pressure in the fluid

  Water flows through a pipe. The diameter of t m :;hm32 ftqic6fqw*uhe pipe at point B is larger than ac*3h q6mu f;t2fmwqi:t point A. Where is the water pressure greatest?

  When you blow some air ak ;bn p0vor)h)bove a paper strip, the paper rises. This is because

  A sky diver falls through the air at ter woppt y8w5,k)akm3 e c30 g-bt5a3kzdminal velocity. The force of air resistb0gpecktyo m,3 3zw w 53)pk-ka t5d8aance on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a t;ffffe2md.mzg h -o-*all tod.fozfem;hf -gm *f2-wer. Which will reach the ground first?

  When a small spherical rock of radius r falls through water,e58 i)c urgy(qqqn;f-j m.w ,q it experiences a drag f qgwj,)8u (-;cyifnqqm eq.r5orce $F=arv$, 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 effecb;8 xv+yfz+0,hfkxrrt 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 bxv0 z;frxrk +,fh+y8 cause the greatest change in the flow rate?

  Two horizontal pipes pak0 r93slwa;8s0n tv s 33mn(ajxg,rare 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 diffejr3(ax mvsk;8,t 0r330lps angsw 9narence 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, but pipe B is twice as lo7biq:-k)0g ls pnbm:n k1d7q ong as pipe A. Water undergoes vi:nm kbk -o:lp)7gq1b dsin70qscous 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 flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to bfopq7 me::r5y y4zcu3 e associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readr eoy:3z57ycm fq:pu4ily explained in terms of

  When a tube of diameter d is placed in water, the wate lucmtltsu.0 3 us0h.upu:73qr rises to a height h. If the diameter were half atpu0 csu37.q03.m h:utulu l ss great, how high would the water rise?

  Certain insects, such as theu i;; kd(hv3nr)cqjh8 h/rl m3 water bug, are sufficiently lightweight that they can run on top of water widr; )jnkh8 ;mc(3q hi rvhu3/lthout 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 is the weight of bug B?

  Certain insects, such as the water bug, are suf:di 1jkbsvw*6 ficiently 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 di6w1v *:jskbin 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 ha c7r0+t f)vkxns a mass of 30.0 g. Whnr7fxkv)t+ 0c at is its density?

  A liquid has a specific gravity of 7zw7n.:on v8fuehkmidhf/ 4(0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x /tzn df7pq3xfpjzo h *3,0dm) 4.00 cm. What is the maximum pressure it can exert on a hot jz/),p7pqd3hx *do3 0z mfnfrizontal surface?

  A person weighing 900 N is standing on snowsho,xl 00 j/jobpees. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) mus :so0qc(mc:v0u rk p47nlngys6al 4)d t a submarine withstand at a depth of 120.0 m in thec0 k 4m rc yvaq7s(4nngl60dlusp) :o: ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximr(+b4/eve uk vum force ofb ee /+kv4u(rv $5.20 \times 10^{5} \; N$. 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 (c8dr16 1 lxjdgd ob2yabsolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below thh5cvcq -lk.y*,ny w.g e surface of sea? (The density o .kyylh wg5v*,ncc.- qf seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute ldjj z9cl.te +6ad0h: pressure at a location 15.0 m below the surface of sea? (The density of seawe6zdd l0jat.h:l 9 j+cater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydra;f t- k5-spg6e9uh zeop 0+hefulic machine. The small piston has areaf-+ft0p;kghh- o5ee zu 96 esp $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lkjo k/12 z 6i3xu1lh.xurx 0xpift, the small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be appliedi1xolz10 x26hrku xjx .ukp/ 3 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 hydraulic piston. Whny plb o7lzfbh2 +6)x4at force needs to be applied to a 5.0 zh62+p4 nl)7by oxblf cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its -oy a)karh59oit.ck*2hin;l large piston has a diameter of 40 cm. The lift raises a lch )5ao.kr-i2iyk o* h;atl 9noad 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. What is the buoyant f0o1ryyu0u 7/rgm:6f 4n sxmsrorce ofu6x1y0r/ 4onmgm 0r u7f:s yrs the water?

  An object has a volume c0 oy8bl3iy(-r 3njhs wr3s* qof $4.0 \; m^{3}$ 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 submerk8 tr+dn) 6,bf ju9 c8xdmfu8vged in water. What is thnud) x6df8 kb9 fcumj,88vrt +e tension in the string? (The specific gravity of iron is 7.86.)

  If the density of go4n5ixol:, y, /hya qsrld is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel 7 19wm(bucwtpg qqnrpvby4 g jc6,497 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 ithnr5x:fqv,:nx4nfes x t+e4+ is in air and 6.86 N when it is immersed in water. Whaet,e n:v :hfqf4x4xxn5+rs +nt is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Novx5r7h5hih)r; kig/ aw a 20-g piece of copper (specific gravity = 8.9) is ghx5ri75r hhi /;ka)v 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 anf,7h7f yq0pycshm2 a 7uj)i:*; k jgzid 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 diam9 yk+7p0be fuqw(kx.v eter 2.0 cm will just barely float in wa9f+0ueykw7 .qv pxkb (ter. What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 mso/ii 6hs-yey80cn (g wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinke /syiioy 08sn6( g-hcs 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 itym)qz5obg/* ts volume beneath the surface of the water. The weight of the displaced water is* go) yqm5z/bt 2000 N. What is the weight of the object?

  A solid object floats in water with t, oi1o(xoftu- iv; -fihree-fourths of its volume beneath the surfaceou o(; ivo-xfitf-1 ,i. What is the object's density?

  A 200-N object floats witz -b3el5c2a9 thlr dyto82t6eh three-fourths of its volume beneath the surface of the wa2lht2e5czrty69a8 e-do tb l3ter. What is the buoyant force on the object?

  A polar bear of mass 205fd/ i .fxgzs:0 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will jus d5sx/.zif:g ft support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the g5 o*ckmyp 8t 4qy(d3d,ujn-yflow rate.

  Liquid flows through a 4.0 cm d0jc9ruxb( 4 jxvpbsg 7 59bjc*iameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is thcx9bc0p u(s jb4*xrjb5 gj79 ve velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipzw)+-n07 g;v9qb6wniu nkv cxe 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 supplyf8gfd dj )tl-cnv 3(l2 a drinking fountain with 300 kPa, if the fountain is 3l- g (fd)3dvt28jfcln0.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that hol*f4n dm( jz j2suci45dds water at a depth of 15 du4d5nc( j4j i2sf*zmm. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectio4sn2 8x6wg.6d vh/ ikcwh pm0qnal 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 i;s(3awmtrtpjmn ;mk bq:+ fj.hx 1+6Pa-s. How long would it take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in6 1+m k;;st+ : hnx(rj3tqf mipbjm.wa 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 fattyg8ua8 z0jku k, tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided 8aukgz,0 kju8by 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 twice the diameteea7lj *zxlb:5 r of tube B.l:bezjlx * 5a7 If water rises 24 cm in 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 ek 1x eer (dx,kep4,4gg.fvu) l2c: zdcapillary tup.,:c 2zxxe , eedd k evukg)1f4(lr4gbe of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass e eubw 4r00y1wcapillary tube wiu4ywew0rb01 eth a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the watmfapfok, w-t9n8 d8)vmru1 aa5 0/hyger rises in the tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowered to one-n5v a9 h1-w)tdmapff/8ga0mor 8 u,yk 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 frame of length 0.120 m and width 0.600 m with azai:ziqmf xxc8kt:// au u7* 7 soap film formed within its conc/u: kai7qi7f*au8zx m: txz/fined area. If 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, and9pvahkj4-b d ; 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 jp9; -vbkda4hN/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?