The three common phasesa/,yi tr.yj9x +lm n(l of matter are

  Density is

  Substance A has a denssg v.x qi+.gxfybdtz :;:1ix 1ity 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 followin6+eqqczud0d:l 8n oo5g is not a unit of pressure?

  Consider three drinking glasses. All three have the same area g.( )3k-fhtvu rr,iv6q 9sruzbase, and all three are filled to the same depth with water. Gl r,g u)ztkf.3 qv6rrsvu i9-h(ass 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 pressures ina2kfp cof2d,o6 cavhi)7 f 6u-side and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute presj )*9nj.tqxu 0a8(bgzws m(qisure at the bq sxij 9 t8q(a).g*j u0wn(zmbottom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you 9cfwj e/a7 q s ,sm0 z6oioajqwk;(+khf*)2ekdive to 2.0 m beneath the surfac0j6kk ec2o i+az /f);fasejwk qos hwq7m9*,(e, what happens to the absolute pressure on you?

State Pascal's princip8on)p-3 ws nbele.

State Archimedes' principl fq,n:egn(v2 le.

  $50 \; cm^{3}$ 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 cons lzrhahl(xt61p)yz 26tant density, what happens to the buoyant f)rz hpayt(6lxz6 21hlorce on it?

  Salt water has greater densitys1gvk n7 6mkyf1sov nr/ru7r* d8jd-3(vt *w s than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force great1f87ss (7*/dn dk-oyvt j6v31r*wuvgsrn km rer on the boat?

  Salt water is more dense than fresh water. A ship floats o7 wkl62v+id:ryiy ;din both fresh water and salt water. Compared to the fresh water, the volume of w ki2 6d7lorv; y:dw+yiater displaced in the salt water is

  A steel ball sinks in w8 kavdn9iz za-b)j19 0mn*xu0nzd5 toater but floats in a pool of mercury. Where is the buoyant force on 1a z9o*0xb -un9mnv td)0za5inj8zk d the ball greater?

  A 10-kg piece of aluminum sits at thu d(uifixs::0,j5s ahe bottom of a lake, right next to a 10-kg piece of lead. Which0 i5fi : uashsjdux:,( has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in au hg2elhc6o 1mok8)e6 bathtub. If the iron is removed from the wood, what happens to the water level in theh2 1eugkeho 8)om6c6l tub?

  A piece of wood is floating in a bathtub. A second piece of woy2 r3h gj4bd+aod sits on top of the first 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 g4j ra b32hy+din the tub?

  Water flows through a pipe. The diameter q kn*c-mn9p7p3zx mc2 of the pipe at point B is larger than at point A. Where isxcmzcq7 pp *9 2n-kn3m the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Itj-vwim84mj e h4k1eqx/0 8h if the pipe widens to twice its original radius, what is the flowv 8te emw kq4j/ii0m18jxh-h4 speed in the wider section?

  An ideal fluid flows at 12rg8zlw* jeue/63, vz k m/s in a horizontal pipe. If the pipe narrows to half its origin*l3 wjk6/ ,euzge zr8val radius, what is the flow speed in the narrower section?

State Bernoulli's principle(*;jplxv lxt , ladiedj t/-;gv0 qj*3.

  Which one of the following is associated with the law of conservation fudnl:ty sn djq8*;.3r, )ixd of energy in fl*;u:fd,ir) lt8n d3d.sjnqxyuids?

  As the speed of a moving fluid increases, the pressure in te)kdf65 9wc dyhe fluid

  Water flows through a pipe. The diameter of the pipe at+fo,pqrg:g. uvei.( r point B is larger than at point A. Where is the water pressure+p,gq r(ifruoe :g. .v greatest?

  When you blow some air above a paper strip, the paper rises. This is bec.jc ar)se /sj/1mf s;rause

  A sky diver falls through the air yp7,,ix )czjo at terminal velocity. The force of air resistance on hozp yx j)7,,icim is

  Two Styrofoam balls, of raq f65y4mfvl 3udii R and 2R, are released simultaneously from a tall tof 563qu mlvfy4wer. Which will reach the ground first?

  When a small spherical rockzt,ml1mhq-5,kh ;izi ;aoc4v of radius r falls through water, it experiences a drag forh,i,i-kh 5moq14tm va;; lzzcce $F=arv$, 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 through2u3bx20ads ge; ,hruk a narrow pipe? That is, if you made a 10% change in each of the quantities bedr3kb22u ;u x,sagh 0elow, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the sa r2y(5q 8/z zg- ci(uhrgl8etvme length, but pipe B has twice the diameter of pipe A.-yuq vh(g2rg8e (t r/l8iz5cz 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 A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same didr2u,/y a;jq4qe o; ivameter, but pipe B is twice as long as pipe A. Water undergjo u a24/,vderqqy;i;oes 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 the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to baa(sj uagw 0xpf+d5-6e 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 i(jdpa ag5x-au w 6s0+fn terms of

  When a tube of diameter d is placed qhy/t ed:deji /sd ko3::pz;p/kr5,f in water, the water rises to a height h. If the diameter were half as great, hz 3k/d,: sireo 5tp /ej /fphky:;q:ddow high would the water rise?

  Certain insects, such as the water bug, are s; dk,c/g gdb/ zz629lex itsq4ufficiently 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 big as bug A, in all9cl g g zd2 ;tdbz,e/4iqs6k/x 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 sufficiently lightweight that they chcu/keq9d88 6rk;2 ut hudam b;w4 y,zan 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 badu68huz8/,ckmetwrqd2;k; 4 hyu9long, 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 of 30.0m( c:kve 9,wln-co9 io g. What is its dekc,9e-wm 9nv ic(l:oonsity?

  A liquid has a specific gravity of 0.357. Whatw mplirl057 qv *7tq3p is its density?

  A brick weighs 50.0 N, and measures vl4gm siv 3pp-8jre1* 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can e1evmp gj-4p v*rlsi83xert on a horizontal surface?

  A person weighing 900 N is standing5ty xsy sfnx(9w48*-4sfvtp 0ewudy. on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarinhch v/1tlfp i-0x n.2j /zl,2bhra/tje withstand at a depth of 120.0 m in the ocean2 jlrhp-1/b 0 zfct,ia2tn v// .ljhhx?

  A circular window of 30 c/u9r +dng3 adlyqckua(o+/.6k duaxfn:7o7fm diameter in a submarine can withstand a maximum force of aca gdk(3+fod+oy/ r 7l.k6fnud:u/ua nq79x$5.20 \times 10^{5} \; N$. 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 kPa8 si4r o1zkzzq,(j1pkxwze ggt +7h52?

  What is the gauge preccnqo pb1;-0o ssure at a location 15.0 m below the surface of sea? (The den;c-p cn bo0o1qsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below t5)rr,;wnqxr j,j)hl9b) yw m ohe surface of sea? (Thw5 r)mn jh)x;lbyojw9) r,qr, e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine.yjar7;l5y 4cz ;-1xpuo 9uliq The small piston has r 5uljo 1x z;y7cuiyap-94ql; 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 a radius of 5.0 cm ande(9,zbrl bpb+ the large piston has a radius of 15b(zprb+el 9b, 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 d*h n05s,je95 fdbcfu9/e gjh tiameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to a*s nuf 9ehjt55h 0jg/fd,ebc9ccomplish this?

  The small piston of :3 :7 hwau (p(4znwsge6eifrda hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load o :(:(si u redzhw3ef7n4ap6gwf 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 o bunnx0/5rgiy-)l; kforce of the wate /rgx-b iun0o)lyn;5k r?

  An object has a volumewm -s8iy n m6tw130.r v-+sqqqux mvp3 of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of n+m md -m-y4cicly .,xsolid iron is supported by a string while submerged in water. What is the tension inc - mxmn.4icy+l-my ,d the string? (The specific gravity of iron is 7.86.)

  If the density of gold i gtbc;;viga4 :s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density(6 q+qn:p on9bl6cxu a = $7.8 \times 10^3 \; kg/m^{3}$) 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 wh- 3td wntp:q2hen it is immersed in water. What is the specific gravp-d :h t2nwq3tity of the object?

  A container of water is placed on a scale, and the scale rzg1ofar: vrm;h*7y;vu 2ubb o3f)9p neads 120 g. Now a 20-g piece of copper (specific gravity = 8.9b h1b;a*u : 7po y;f3fvov r9n)mr2guz) 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 nsy-swch b8whgyrr 4/t(l; 61of 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 jk)9zpg2-l5cfots9t diameter 2.0 cm will just barely float in water. Whatc)z9t9 g 5 2-ojfpltks is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide,-a +vp+ymupzwa5d 29r and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in 2vw+u9z m rap+yp-d5aa 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*(7yjol4-xd *tapusr u+ 8rfh its volume beneath the surface of the water. The weight of the displaced watf-a +d8h74xu*lrst u(pj*r yoer is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of id ls t+s ;f**nk2lgl0mts volume beneath the surface. What is the object's density?m l*ls*+dkgstfl2;0 n

  A 200-N object floats with three-fourths of its volume beneath the 4-(g wt,xf ma4fg*hlssurface of the water. What is the buoygf-ahmlgt(sf ,xw 4 4*ant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 10v , k(rs vepeidu3:c0-0 cm thick. 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 0 :v,e0kds-ierpuc3( v.98.

  Liquid flows through a pipe jzexidhw2; h 7 *mr22nsk1.wsqjt1d.of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm q.)if1vd6l ,orm *t a jz5vff4diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in tm z ildfa*o 4v1.65frq,j)tfvhe line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressurqp if v a8.*i3v+ijhw*ee4je9 e 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 ec*hlb7fu d /u+)46: zhggkezfor a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the pzggu 7he4 zdhe*l6+b/c:f ku) ump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tan9h2uzlth c71ic5ia (fk that holds wateza1 ctcu 2i fl5(ih9h7r at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal in*y yo.oqi. a;nmw88 pipe 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. How long woul/itx, yqoz h-2zfk t)3d 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 above the top of the neck, and neglect any drag effects due to the upper part of the funnzi/ttq2 fyo) -k,3hzxel.

  Suppose that the build-up of fatty brz4sbf 3 1f4z+2zwjntissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the h4 2 sr1fzbj4nw+3zb fzeart 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 j g g;k8;qcesyi+- xwl-w37nrdiameter of tube B. If water rises 24 cm in g7i;ylnw ;8r+cs3gwqe -jxk -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 6 ;bkp g6t11y,wozzk lin a capillalyk w616o,zz1kp ;gb try tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a gl(ziyugjxk eh/ (m-p4 vo:0qy3ass capillary tube with a diameterhoqx-ku(ev i( gz :40jmy3y/p of
0.50 mm?

  A narrow tube is placed vertically iez)*rsb ave z6oz75 w4n a pan of 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 colze veo)w*a7zbr 65s4z umn in the tube?

  Consider a rectangular frame of length 0g ii;vs jb)gv(.3 sn,p.120 m and width 0.600 m with a soap film formed within its confined area. If the sus . g;(v,3n)bips givjrface 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 h(3 9 8y9yn9 cyuqdh kgsv 2vbhyp+e9(yas 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 mucy+ 9cy 8y spvvungh3kq 9b29(d(yeyh9h work is required to move the adjustable long side so that the frame is 12 cm square?