The three common phases of mabhk9v9vd/*5to4fq)*;a u9 b vi pky cttter are

  Density is

  Substance A has a density of ;recn 2e1 olxxtlmg)46cp 5:w$3.0 \; g/cm^{3}$ 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 press5 na58b3-kz uaqk0xk.pv;kai0q md a3ure?

  Consider three drinking glasses. All three have the same area base, and alhca+tl 2 .uj zc6;balmc;4(fvl three are filled to the same depth with water. Glass A is cylindrical. Glass B is w;lblz6faha 2 + ;j(c.vcct4umider 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 pressures ins/ nmwx 81w*yp)io2lfride and outside a tire called?

  When atmospheric pressure changwzqm7 y 7b34ffrwb3/xj3gk4 qes, what happens to the absolute pressure at the b73fbqm4jk q3rx/wfwg3b4 zy7 ottom of a pool?

  You are originally 1.0 m beneath the surface of. dz n q6qeji4biw-k8 0r*5:oubb*fkf a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressu8b:ndf4oiq* b-.iz65e0*j kbk urqw fre on you?

State Pascal's principl +z0(c(y/g*fc nu 94icftd tple.

State Archimedes' prii f /k3ccb2ru+nciple.

  $50 \; cm^{3}$ 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 densl0u-vur;(y1lm e)pu uaen2 4gity, what happens to the buoyant (l;ur u n2vy1g4umuee-a0)p l force on it?

  Salt water has greater densi9wq bn+5 m2zw 0kboo4ety than fresh water. A boat floats in both fresh water and in salt water. Wherzb5ooqwe9kw40 n+ 2b me is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh w7vdn(u www4 fayj-.lx;-e( dgo;n10 ha6 wkhdater and salt water. Compared to the fresh water, the volume oak(w-vgdwdj7l 1wxew 0odua ;6 y4-;(.n hfhn f water displaced in the salt water is

  A steel ball sinks in wat 6 pcuw.b2os4wyi -g(per but floats in a pool of mercury. Where is the buoyaiyg2 p. 6-(pcos 4ubwwnt force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a la-3ihb e p3cw8vke, right next to a 10-kg piece of lead. Which has the greater buoyant force on hw3 vc3b8p-ieit?

  A piece of iron rests on top of a piece of wood floating in a baeoug33m3nqj,w4z jj;qj0u 2vthtub. If the iron is removed from the wood, what happen m ;v3qjj3u0 e 2wjungoqz4,j3s to the water level in the tub?

  A piece of wood is floating in gz jhouuf bt8447 .w.ma bathtub. A second piece of wood sits on top of the firs 4u f w7utgbo4j.8z.hmt 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 diam i;oxb-z20cc(/2v ex l( 93fignrqv oneter of the pipe at point B is larger than at point A. Where is the speed of th2vcg qn0nv; ix-2o/ ( f3c9exlz(ibore water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens ne1b(11u3k ijakrh +k to twice its original radius, what is the flow speed in theu(1rhbkn +1eja ik3 k1 wider section?

  An ideal fluid flows at 12 m/s in a 9vu0 pc(jzi5:ntu9 v+am 7w0lrj djf)horizontal pipe. If the pipe narrows to half its original radiusw)d0u(j0c in:5f9vz+mjr u aj t 9lpv7, what is the flow speed in the narrower section?

State Bernoulli's principl+ll19nzj,oe fss8e/ oe.

  Which one of the followpr. uwj4 m,bs6(vktp7g j:c q7ing is associated with the law of conservation of energy in6 :.,w7pbvctmj(ku 7r spj4 gq fluids?

  As the speed of a moving fluid increases,hbho6c/ *kto)7)vyo y the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at pdgug t 4n+ ait32+3cpioint B is larger than at point A. Where is the water pressure gg+i 2ttgc3i 3 pna4d+ureatest?

  When you blow some air above a paper strip, the paper rises. This is beh gisaf qo2o0:83+m-x ziv:cscause

  A sky diver falls througb 3iw.643lsc ffslzw xd;ndru1 j- p0*h the air at terminal velocity. The force of air resistance on him isd udl*0x4c pws3r-fi6nf1bs;.j z l3w

  Two Styrofoam balls, of radii l.nk, z3nud7nR and 2R, are released simultaneously from a tall tower. Which will reach the ground fi. ulk d3,znn7nrst?

  When a small spherical rock of radius r fall i))x nf+/ sz,ucco+oes through water, it experiences a dra)+x/s fne +oc)c u,izog force $F=arv$, 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 narrl2k(ehh ru 3c5 g/0ujwow pipe? That is, if you made a 10% change in each of the quantities below, which woc2kjhelu3 g/(0uw5hr uld cause the greatest change in the flow rate?

  Two horizontal pipes are the same 5:ae dfcexv8khp3 z2 7length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure dif p7:8k25d hxaef v3cezference 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 *w c/bvbkfc),the 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 pbcc)vbw , fk/*ipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it o28deptxvz,j-*jl, aj ften 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", this is readily explained in termsjejp2x, -,d zvalt8*j of

  When a tube of diameter d is placed in water, the water rises to a heigry sd i-nuxb13k )y9f0ht h. If the diameter were half as great, how high would thef93yksrdbi x)01uy- n water rise?

  Certain insects, such as the water bug, are sufficiently lightwek8qzeprx449 :d)kxwv 9 x8 fsqight 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 is, bug B is twice as long, twice as wide, etc. What is txk9x9ez)x8q w4 4kpqs v:8dfrhe weight of bug B?

  Certain insects, such as the waw 2 egf;4-h+etyhgdbw./xt.lter 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 fgdb/yt w+;heltfhw4 .x-.eg 2orce 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 dimena;sf+r4fzuj (f4 v0i fsions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its densitffja0(fv+ ifrz;4s4u y?

  A liquid has a specific gravity of 0-w d ov+e7+fmk.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What iswkf* nhvfe/+( the maximum p(fh w/k*ve+ fnressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has azs e 5qbwj) uiu82ju:yym 2/sz63v2jarea $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarik on0 ,b5c7sj7vcnqqt+ cx)d1ne withstand at a depth of 120.0 m in the ocean?,7so) bn7 nqt1c5kjdxcqv+ c 0

  A circular window of 30 cm diameter in a submarine can withstand a maxisv6qa r kf4l0(mum force 6v q0rsk4(fal 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 absoid )ed:. to x ,okhrvl*x49gd/lute pressure is 300 kPa?

  What is the gauge pressure at a loc4 dpw67r eurtc 2s,gx+ation 15.0 m below the surface of sea? (The density of r t74gsu,x2wp 6drc+eseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m bel jlmsc2 i)pe+sk8l, j*3xj4e oow the surface of sea? (The densi ej28 mjk3p*4i ,xl+j ecs)oslty of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydrabe;z/h15uwd 9f-n d wwaj,qe:ulic machine. The small piston has areeq h u5-,jw zb1/fena:d9dw;w a $2.0 \; cm^{2}$. 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 the cdgqwfj o7a d :ls1:/y7i,6kjlarge piston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car , wo7ddf1/ :qil6js7gkaj: yc weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. Wx:xlia poc1ube 5*4x 4hat force needs to be appliedx4 co*lxx1ea :bp u45i to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic l 9tn2vvew6n3j) m9ek1 ,h1glmxu ufg-ift has a diameter of 8.0 cm, and its large piston has a dia gxv-1fvne u2ue, 6k l199gmjw)nm3 thmeter 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 Nyz sa7 nl .db2r,zjhci: e2;j0 in water. What is the buoyant force of the ;rz jn0s72,l:jyd e.2 aibchzwater?

  An object has a voluq1wb j//ja 0qzgy6xh95 vdbx9me 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 sx tx:0ve9h (ruupported by a string while submerged in water. What is th(u9hxrte:v 0 xe tension in the string? (The specific gravity of iron is 7.86.)

  If the density of goldom9o7c4n -pak mt0by, 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 submarineb ngw:q).k5t8smo rc y2arq5m3+.ars (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 l6hdjj:w0y lqbp r) 4/x /fut3air and 6.86 N when it is immersed in water. What is the specific gravity of the olw4r6/0x )/uth pdf jq 3byl:jbject?

  A container of water is placed on a scale, and the scvwo9r n(. xxprb+y3 2cale reads 120 g. Now a 20-g piece of copper vc+(.2yrnr o bwxx93p(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 bsi9m i5mahriys.)+: 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 diametla,5. z3ps)+jpk u7 ipgi 5rxier 2.0 cm will just barely float in water. What is its mr)xji3sppk igai,.l55pu7+z ass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m 6k:asl b *fo9vwide, and 0.50 m high. How many kilograms of mass can bek ol9v*fs:ba6 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 witqe a4: o5+3g fewjv+ourd/-m7oz/xz xh half its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of the fumrgavjz o :5/4/xz e qd xowe++-o37object?

  A solid object floats in water with three-fou 9c3i,zzo0 gwo1hmxg 4rths of its volume beneath the surface. What is the object's g3o9mzogi1x c4 0z,hw density?

  A 200-N object floats with three-fourths of ii, nx.t93 yhsy jc 2qt/6-y7s5vthxldts volume beneath the surface of the dsjxht/59v ct- ,2lnhs6.ty y3 iqx7ywater. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice flx nyh2uqcd m7) qu+tdyt--, f7oe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? Ty-+ uf -d7)yt ucq7nqtxdh ,m2he specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.- . hmnlb8b ybw4fcrd *z0sohhaz93* :0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is x9s:s3tgq 79jcrh 7sm a 2.0 cm diameter csh97:g3jsxrt 97 qmsrestriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe *1n 3 xo1btyllshg :2ljyv9.xwith 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 doesdz/4 1 s f5aad7cxqn,b it take for a pump to supply a drinking fountain with 300 kPa, if the foun7/x5z,a4d1ad sbq f cntain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of abp i*g q.vr+ woag186r water storage tank that holds water at a depth of 15 m. Aogqv6wrb+ r1ag8*p . it what rate will water flow out of the hole?

  Water flows through a horizontal pipe of / f, i::f9mcixkkyf; scross-sectional 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 w3t-pq 1p18l4zjosgvcould it take to pour 4.0 L of oilpg p l-tov1 34sqj8cz1 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.

  Suppose that the build-up of fa);*drlkmy, atc2m;.fkb t+ gmtty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have tym)tad+g ;c;m ,rl t2*kbf.k mo be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameterxd9* b)/8estzt -m)znwcd9 qc of tube B. If water rises w sb9m qd)*/8nzztte 9cxc )d-24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/qw+0 t b.natmkiq-1 s5m. How high will water rise in a capillar sm51.t ktb inwq0a-q+y tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in ial f5 x vd;:7vt9-xnj.hu 0 mmt6h-0rfio/gna glass capillary tube with a diamet/9n 5itxhf.0imh dg:uj6l- v nvx;m7trfa0-oer of
0.50 mm?

  A narrow tube is placed vertically in a pan rz+rpm;6*-jhvg z ro 3of 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 in topjzrg;r+z3h v m *r-6he tube?

  Consider a rectangular frame of length 0.120 m and width jx 4eblauahyj / b0e ;9vfy7;q5z8t/o 0.600 m with a soap film formed within its confined area. If the surface teq5bh jz lb vuoe9e a;7f80 /ty;y/4jaxnsion 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 fra94g prhcjc2 :sme has length 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 work is required to move the adjustabsgrh pc2 49:cjle long side so that the frame is 12 cm square?