The three common phases of matter ea52x,wsmk g /qmle m;ko5-n9are

  Density is

  Substance A has a densc*q iaivt3+c:ity 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 prq(8 r0yixx4 -;r ovavzessure?

  Consider three drinking glasses. All three have the same area base, and all xi2nof:q9a nd/sp+a *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 wate/s d2xi+f9 poaqn*na:r 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 betweewni. ,9+ nvsaqjg 5:tsn the pressures inside and outside a tire called?

  When atmospheric pressure changes, whasd-p;p ucyhb*q -l lz k16difop3)7c*t happens to the absolute pressure at the bottom of a poolo ;ys6uzhl1ldcdq--f7*p 3 ppbcki) *?

  You are originally 1.0 m beneath the surface of a po3rzmo k ,vu*uv:j w 8ai830pjubbu+7 qol. If you dive to 2.0 m beneath the surface, what happens to the absolute pressurjwu3iv ,* o7 m83bv+ 0ruq:pajuz8b uke on you?

State Pascal's princip 23htxou*6tmjk p+n qjr4,,q zle.

State Archimedes' prixz4zij8)t (mvnciple.

  $50 \; cm^{3}$ 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(b3aw 8 )w idaaxw1 slk;ke70n happens to the buoyant fxeaa;1wb n8w7wi ( k3ldk s0)aorce on it?

  Salt water has greater density than fresh water. A 2 ns)llca aeb(:uko)3tw :l)fboat floats in both fresh water and in salt water. Where is the buoyant for )ksc) t 2bfa leoalu)w(n::l3ce greater on the boat?

  Salt water is more dy9o lr.u hsn4m itgt9:r;i l)3ense than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water:r;t4umh .9r3ogt9il sil)yn displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where it*o3lhhxj 5a k:(dklg-k.fs3s the buoyant force on the ball g* ljxk(f-khtk .:3dl5gh 3aosreater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg pi(ecri3 hxrxx , 3(9zlrece of lead. Which has the greater x 3rexr9c3hrl,(iz( x buoyant force on it?

  A piece of iron rests on top of a pi4 h,p ;d-v 9jyjpkf+rhece of wood floating in a bathtub. If the iron is removed fro 9rjphd,ky;+fp h4- jvm the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wooa9atnwlj -3 93vy+lz)z; yxl td sits on top of the first piece, and does not touch the water. If lyvzz ; xnl+ 9tjwy-39 l3ta)athe 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 point B is larger te1.ukv +oynti. ;r w0uhan at point tu; k+ ri1v o.u.ewny0A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If th9la,y*q1 m.d bs9eno oe pipe widens to twice its original radius, what is the flow spo,1.s e9 mlq* dnba9yoeed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the wb.jv;v:v 6+p)l jqitpipe narrows to half its original radius, what is the flow speed in the narrower section? ;wib)vvp.+l v:j 6jtq

State Bernoulli's principle.vcglovj-.8j5a 7r qwx) dt+ f4tq a,7c

  Which one of the following is associated with the law of conserquuttd0+ w7xp y+m/, nvation of energy in fluids?t/pu,y7nxqd0wm+u+t

  As the speed of a moving fluid increases, the presq frqt/g:/ 1) , beujauoj1l0vsure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger 0;vh z1)7f tf+ihp tqnthan at point A. Where is the water pressurepz7fq0ih +tf;1 hntv) greatest?

  When you blow some air above a paper strip, the paper rises. This is bgjr3)zgx*4qbecause

  A sky diver falls through the air ,fvpqa eqa786 at terminal velocity. The force of air resistance on hpe8aa7fvq6, qim is

  Two Styrofoam balls, of radii R and 2R, are released simultb33dfe zku(+e8 e5l ko9s a6xcaneously from a tall tower. Which will reach thex+ z3k6e9fba 3kcu edosl5 e8( ground first?

  When a small spherical rock of radius r falls through water, it experiences a wez5sw z,(rfre854m t draztw(wre5,r84 5e sfzmg 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 fl,bgw02uave;od/ke +e6*sqpo uid 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 fleq6vg o;u*0pa d2wksb,o/+ eeow rate?

  Two horizontal pipes are the same length, but pipe B has twic: fzt64)m rs. h,lednne the diameter of pipe A. Water undergoes viscous flow in both pipes, ss:hrf e6 zl,n) n.m4tdubject 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 sae8bs4- uku6e c9g/jdtme 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 pipe B is Q, what is 4ceu/8du9e gjs-kb6t the flow rate in pipe A?

  When soup gets cold, it often ta+pb9po *a/ lu0x mj5ccstes 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 tlc*p5+bpouj c0 ax9m/erms of

  When a tube of diameter d is placed in water, the water rises to a heie,c/jywb e-5 aght h. If the diameter were half as great, how high would the w ycbjw5e-e/ ,aater rise?

  Certain insects, such as the water bug, are sufficiently ligh8wluaurvbjw 7 e/ q9(6ur2zb -lr:pkrp:w* 6 btweight 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. Wha7l lu/*u:qbjv8b arp6z e9u w-6wkb(rp :2wrrt is the weight of bug B?

  Certain insects, such as the water bug, arenn g7x3)do xv f5y65i 7ce;wjd 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 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 lo d;exv7 djfc56ogxi)yn 7n53wng, 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 cl ybs n)d/x*8has a mass of 30.0 g. bds/ x8n cly)*What is its density?

  A liquid has a specificmtv/eq(2n n -chn0jei4 :hnc1 gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm.28 yr*wnpf8 ryj6fw j( What is the maximum pressu*py8f(rww2j 86 rfnj yre it can exert on a horizontal surface?

  A person weighing 900 N ii.pi-- mo esr 886g r6xegyj5bs standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a d3 : fl+ hnma;nnw;6rbdepth of 120.0 m in the oc; bawf d6l:+ nh;nnr3mean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum force ker5;+cjcj *e re; ce +*5jkcjof $5.20 \times 10^{5} \; N$. 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 absolute pressure is 300 kPx d:k (7dz1e; 0q;spryautmg.a?

  What is the gauge pressure at a location 1hqij3wf r f645b2ew,o 5.0 m below the surface of sea? (The density of seawaterw6 ejqw43bfof5h2ri , is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure aj +mjvugxf5 5,*ekv9zt a location 15.0 m below the surface of sea? (Thxm55ve9,zkfj u gv*j+e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydr..o,pau 0qz ioaulic machine. The small piston has .u qiz,o .pao0area $2.0 \; cm^{2}$. 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 5aig:hw+)( ;t dpzdu;8ijt*t m .0 cm and the large piston has a;:)p;(d jtiadwz*8uthi gt+m 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 diameter hydraulic piston. g/06akn /,q;e wbtfmcWhat force needs to be applied to a mqnwe,c;g f k/ ba6t/05.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its:ae -w8hu/bxp large piston has a diamete/ :exau h8wp-br 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 weigex l +sp0zv7,o ;b v+jr9m-ttbhs 40 N in air and 30 N in water. What is the buoyant force ; -,ez9lj+pb+vsmt7 xrv otb 0of the water?

  An object has a volu7gj/1yo mqwq*9a ily)me 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 w 97,yopkrdi3+xq)uustring while submerged in water. What is the tension in the string? (The specific grri) u9yudq ,+73o wpxkavity of iron is 7.86.)

  If the density of gold 3uh rlrqc.g 34is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (dens1iyhui( g-;kzl;1 hbfity = $7.8 \times 10^3 \; kg/m^{3}$) 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 when.3x*t31rn hdcyf :zin it is immersed in water. What is the specific gravitdf nx:ch yi1 t3*rz.n3y of the object?

  A container of water is plan*yjro -r9bo6 pn.(sm ced on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific 6 so(n9b.o r*rmny-jpgravity = 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 of 1.0 kg and density of p.iplgpl nt:6so *)phy(x/(t$2700 \; kg/m^{3}$ 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 ii0 flef :x(otn3t 91wcm and diameter 2.0 cm will just barely float in water. What 9x 1 f:nilwietto3f0(is its mass?

  A rectangular box of neg8t:-o-p pr bmyligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. prpt -m:o-b8y 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 benei fw8ltt m :+l+qm hqb;;lq*inty. 56iath the surface of the water. The weight of the displaced water is 200mtl 5 hqilftn8;l*iw tb:+y. +q iqm6;0 N. What is the weight of the object?

  A solid object floats in wat5 *zmeg *svi1uer with three-fourths of its volume beneath the surface. What is the objecegvm z*5us*i1t's density?

  A 200-N object floats with three-fourths of its volume beneati qrhj88m /.xkh the surface of the water. What is the buoyant force on the oj.i8mx 8hr/ qkbject?

  A polar bear of mass 200 kg ,l0 te3zj emg().- j7hvqbulvstands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of spev bhej-,gj0(l 7lu v.mzq)t3ecific 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 flow rate8)tgxe w;zil7 /d-s-ra-7facd ajqf/ .

  Liquid flows through a 4.0 cm diameter pipe at 1.0 c v0dn-l+m-eht69qvmd .0qw l m/s. There is a 2.0 cm diameter restriction in the line. What is the velh0 t06 v ven dw+l.9m-mqlcqd-ocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pa+sv; m.nth,p ressure 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 drinking fountain withy3qq;+m(at* 0lzqqfonsj04m 4csc nt( 2h4r t 300 kPa,oc4n3;ylt j mr sq tc0nhz42qm4q+sqf(t *a0 ( if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mj/vq akx v3t s*z4,h/fm occurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate w4 kv/fsh,zxvq3j *ta/ ill water flow out of the hole?

  Water flows through a horizontal pipe *e *g ew8pjc,8x:vrlzt.w*kt of cross-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. Hoc1 dn16+ uz,:jipn,oshpb9in- ,vg jhw long would it take 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 p1: jijb-+, inu,6zgv, 1 pnhnsd9ochabove 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 o8.tbo 3kwy)f xn the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the hear 3oywx bkf.t)8t 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 dl q1;*ze q7;msyeq 8aid bkd.0iameter of tube B. If watera7ibq;smeqe1d *yzl d 8.k ;q0 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 higobv. bggx-.x/6uu i* w;c7zdeh will water rise in a capillary 6*b/bxowi. x.vuue c gg-;7zdtube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a gltu,+(bo w o jm/61,bak vjkh4pass capillary tube with a diameter v16okmb,ku a(bo/ jhw4,p+jt of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises i a6q/wq/vfjtsdnb.q4g : ; *mbn the tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowered jdmtbabf vgnwqq/6.: sq/4; * 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 frame of length 0.120 m and width ypd4 v4o;7y5dfhip*z 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much force does the soap film exert on thefhip*y5o7; dv 44dpyz 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and yyp,kxyf +bmu6q i v d:37iq b4:vdg+-is built in such a way that one of the longer sides can be moved without bursting the soap film contained k:4ium7 +qydi, y 6vdbxg-:f vy3 bp+qin the frame. Soapy water has surface tension 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?