The three common phases of matt p8m53vha) mjae .wyo2ij-t8fer are

  Density is

  Substance A has a density fns/(r. /ml2 lecmgv 3of $3.0 \; g/cm^{3}$ 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 a -w855(jupw evf(td1uh( u ucunit of pressure?

  Consider three drinking glasses. All thr9a3, zuqmydu.ee have the same area base, and all three are filled to the same depth with water. Glass A is cylindrical. Glass B is widuy39z .aqmud ,er 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 inside and outside yw +a tnp/-j3wa tire called?

  When atmospheric pressurm nnx c *nm.ky;*) i84xt:hzjxy;r l4le changes, what happens to the absolute pressure at the bottom of ac* 4 mln njmt x.rkn8hi:yxl ;)z*yx4; pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.0-ctk rcgibi+) 4(0e1qg grm9f m beneath r-gqeik c1r 4i0+tf9g( bmc) gthe surface, what happens to the absolute pressure on you?

State Pascal's principlov;nkz 6:xx,i e.

State Archimedes' prinlc;w8(w o48cus6i mia drd*z 9ciple.

  $50 \; cm^{3}$ 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 h ,rb.rh,pu g3tjasgqi nv, cj*5,8 w-density, what happens to the buoyant force on,i-up v3nh g, t8ga . bjc,5jsrqh*rw, it?

  Salt water has greater density thizhtt5q.z6ps3 *kb y7 an fresh water. A boat floats in both fresh water and in salt water. Whe btzzyhi s 5q63kt.p7*re is the buoyant force greater on the boat?

  Salt water is more dense than fresh watert4 k: ;d1b x(ittdhbe0. A ship floats in both fresh water and salt water. Compared to the fresh water, the volum: hxb t1tbe(ddi 40kt;e of water displaced in the salt water is

  A steel ball sinks in water but floats in vf c:e5.i/h xaa pool of mercury. Where is the buoyant force on the ball greateric/a:. h xe5vf?

  A 10-kg piece of aluminu q8kg ;h*gh,1 yfhfa*bm sits at the bottom of a lake, right next to a 10-kg piece of l8*yfghqg1a*;h fb,h kead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floatij 09bzp5xplcl9w pd ;2ng in a bathtub. If the iron is removed from the wood, 9l;w5pjbzxppd0 29cl what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on to9g ax0 7pmu,jkp of the first piece, and does not touch the water. If the top piece is ta7 x k,mapju9g0ken 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 poindgf n-8n0tzx- t B is larger than at point A. Where is the speed of the wate0xtn- f8dn-gzr greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe wizs ab*h(nc:+;t cg ia8dens to twicetsa c*gza+(; in8ch:b its original radius, what is the flow speed in the wider section?

  An ideal fluid flows o:wrjb6sxt5m*7 rffau9 2 qg5at 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the awr mxq*5gr2 sbjf6 o57: tf9uflow speed in the narrower section?

State Bernoulli's principleif tm f2)o9 tksc-;-o2s0zlil .x dg8i.

  Which one of the following is associated with the law of conse0ge*n5c z 0mmaz2p zy/rvation of energy in fl0p/5*c0mzazne 2g zym uids?

  As the speed of a moving fluid increases, the pressure in the fedk4l4dt6* u*h q9us jluid

  Water flows through a pipe. The diameter of the pipe at point B is larger than l8(2k-3r:v j,k3 umx ytmcnctat point A. Where is tvt-k(c k8n:,3x c2m3lj ru tmyhe water pressure greatest?

  When you blow some air aboveuq;0ek ai.;du a paper strip, the paper rises. This is because

  A sky diver falls through the air at teg goti),t7nmx4 5 sk5rrminal velocity. The force of air resistance on migk7r xn gt,s554t)ohim is

  Two Styrofoam balls, of radii R and 2R, are releasem +1:btqd 5l0ug roxf ch+0+ykd simultaneously from a tall tower. Which will reach the ground firstu+x:qt5o klrmf01+0y +b gh dc?

  When a small spherical rock of radius r falls through wateinq 9.cda4 q-mr, it experiences a drag forc in9m c4.dqqa-e $F=arv$, 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 lztv.iysl8i 3l;4rxmty.e-4effect on the flow of fluid through a narrow pipe? That is, if you made a 10% change 3-tt48zmll v s ..xyiyl;ei4rin each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diamt)., zvzofd 2q)j2rxketer of pipe A. Water undergoes viscous flj,zzx)2 vq.dof2r )tkow 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 .lumg;;born8 z33ed pd+ h-vzsame diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acros zgpu8l-.3dneb;mvr3 hz do+ ;s 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 tas r5u1+d-9gt osg8dbjb th: 91-dchhqo tes 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 esr+hhuqh-gd98o g:d5 1tdto19 cjb -b xplained in terms of

  When a tube of diameter d is placed in water, the water rises to a t7 vcy t5evh.j8lk;g8 height h. If the diameter whkjg8t cyt8 v. 7;v5elere half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightwen*by8kw vk(w ,ight 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 lonk bwv8( ywk,*ng, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as torop.mivq5xf, q(d4:8s n;ij he water 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 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 8sip.5vqx 4mn i:d;( jr,ofqoA 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 dimensions 2.0fmk-ev 1gte2u e r8o*,0 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. t8 emegr2e,ov1f -* kuWhat is its density?

  A liquid has a specific gravity of 0.357. What is its densi up1 +9 hzcrnl8nmstwavq3 j4jqx0k7d lq/380ty?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm xcz8d z;xoc5gw 0lt mqdav:59) 4.00 cm. What is the maximum pressure it can exert on a horizontxmc8;dlq gdvt0z5 : 95zawc)oal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has a(6-mf fi ler,urea $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a dep3 +d6q9 zxexvnth of 120.0 m in the ocean?x63vexnq z+ d9

  A circular window of 30 cm diameter in a submarine - k67kjq(g0iuc sfme( can withstand a maximum force of(g -fkm7s0kjui6ec( q $5.20 \times 10^{5} \; N$. 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 jy+z -8 fgaq;ikPa?

  What is the gauge pressure at a locq/9x 8; qepo skw8e/p0 x*qpgration 15.0 m below the surface of sea? (The density of //sqr*8poew g0qpkxpe; 9 x8q seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the:q ;of5ojww4mxcb0 l( surface of sea? (The density o5w q bcoolw:j04x ;fm(f seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machic jyb;puyu+ e02p9nz5 .ayw h)juf t2,ne. The small piston has au5y fhpw2y9nutz ;ay.jbju )c2,+e0 prea $2.0 \; cm^{2}$. 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 b rximtmmzg0j.-t u,a; 85-bp5.0 cm and the large piston has a 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 larg8gi;5 bb auptmm0-.jx m-zrt ,e piston?

  A 13,000 N vehicle is to be lifted by a 2 lj7k(aao) b88hqs71.siq vjq5 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diametv his8jaa7l s1q obj7qkq(.)8er piston to accomplish this?

  The small piston of a hydraulic ,i5*zwx n 2 nlg: s0nw)ku)edklift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift r,2nuk)w0sn5i dzeg: x)kw* lnaises 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 N in water. What is the buoya/2 z69ov yuwtknt force of the wky o2 6z9t/vuwater?

  An object has a volu01 c4yes qvjy(id mai13ar.i( 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 string while suhc( x lm/ +,(ah*w9sl s2kzjelbmerged in water. What is the tension in ,m /j( le sh(xzlc *sl9hkaw2+the string? (The specific gravity of iron is 7.86.)

  If the density of gold :3h9 po7pq)zq+ nfafgq5 z by,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 subsnni p:i): iz6marine (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.m6h7 ei9r3 esd86 N when it is immersed in water. What is the spe67r3dmh9sie ecific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now ey7w/)5x labs,g e- xfq:(*gv/o c csea 20-g piece of copper (specific gravity = 8.9) is suspended from a thread q*osfx()gbsece7lvca 5 /g-x,ey/w:and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum jh9h:kpdv2j :with a 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 diameter 2.0 cm will just bt2bjen5) fj5d arely float in water. What ij)nted25 f5bjs its mass?

  A rectangular box of negliz: a p)dqk9xj6 n6fysv:v(y 5kgible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogramsfys :ayxpjv(kd6z :k9n)5q6v 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 beneath the surface of the water. T / 28mwevth:2hqcu zpk51-)al7 xqrsyhe weight of the displaced water is 2000 N. What is the u-sm 2):a2yk/tpv z wcqhe1lrx85hq7weight of the object?

  A solid object floats in water with three-fourths of its volume b9+ +-kdoyk.btb ilm*feneath the surface. What is the ob f-9+.mkk+ydbiob *ltject's density?

  A 200-N object floats with taqe.pcc4,roc, (4a z xhree-fourths of its volume beneath the surface of the water. What is the buoyant force on ex, o.zaq,4c(c rp4ca the object?

  A polar bear of mass 200 kg stands on an ice floe 100 ctymy5rk7;jeh g v*.2p m thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The speye*g52m.kt y v;7hjprcific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find theqtb 4tfq63xi;+gka w2 flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm 1 /rbw3 d5daohdiameter restriction in the line. Whw1dd5ao3 hr/bat is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressu-ssn,l pub4b8 s ;uohc/ei5o2re 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 7vuodg6ngwkfizj60t .hi/g *m 555n rpump to supply a drinking fountain with 300 kPa, if the fount iuh56v j7d/g 6tgz5i0norf5m .ngk*wain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom o(+j2u lox103 i4f oj)c9bqqovu a*wmnf a water storage tank that holds water at a depth o42(*) o1b0m qjwxoiauof9cl+uj qvn3 f 15 m. At what rate will water flow out of the hole?

  Water flows through x (,tw2;f/fpqn j-z yf:uoru+ a horizontal 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 would it take to pour 4.gpqrm4zl/f:2d a zz :50 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 zpz:4a /2fzqlrm d:5g of the neck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up oflt pane 4wwt( 3/qq)7o fatty tissue on the wall of an artery decreased the radius by 10l7 (tqq4wo3a/nt e w)p%. By how much would the pressure provided by 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 twii-eol4h)f x/ jce the diameter of tube B. If water rises 24 cm in tube A, ho/jefx) 4loh i-w high will it rise in tube B?

  The surface tension of;p 4 yhs b p o*.s3lj-ovoozn+6ab4.py water is 0.073 N/m. How high will water rise in a capillary tube ofzv+ahn6p; p4-oo.bopsb4j.sy *3 oly diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tube wi7.r48jqgc l+k s*bnaq6*bxxoth a diameter o.8b l+b q 6*xc rkgsa*xnjq7o4f
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wzyj5+.iy:un ywgk :-qlv8 fy8ater rises in the tube to 4.0 lnkwuj8:zf i-y8+ v.y y qy5:gcm 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 the tube?

  Consider a rectangular frame of l61 9ibqxir q -w(o1hajength 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 0.0260 N/m, how much force does the soap film exert on6-j ih11q o xqiwra9b( the 0.600 m side?

  An adjustable rectangular frame has lkc2c7 qq 9jd9fength 12 cm and width 5 cm, and is built in such a way that one of the c92cq fj qk9d7longer 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 adjustable long side so that the frame is 12 cm square?