The three common phases ,(a12c b kb5zgrcuf-a of matter are

  Density is

  Substance A has a deeu wz8;r k).pbnsity 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 aliwdy+;z 3ra 1 unit of pressure?

  Consider three drinking glasses. All three have the same ar2uh pis n m:ni8d k7h0r.e;j:oea base, 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 na: .i :s e rdim;2nh7knuhpoj80rrower 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 betweenfyrnzxtf*bq 1s-:l 6. the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute 0yw3 t2+f*o d, hc4i7xhsg ovw *v+bcvpressure at the b*0+2*wbovcfv3x4 o v+ h ghtis 7dwc,yottom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2 l cf0me4o+hm:aa 4 h28qxpv8z.0 m beneath the surface, what happens to the absolute p+:8axho c44mvz20 mpe 8lqhfaressure on you?

State Pascal's princb wx07e6u fe*e)vl55fkt qw:hpu4mt.iple.

State Archimedes' principlxu/aizt:0s;;4 t jc nxd4iu8f e.

  $50 \; cm^{3}$ 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 conso7nfog70cmf) tant density, what happens to the buoya70 ogmcfnf7 )ont force on it?

  Salt water has greater density than fresh water. A boat fl-3jf qc9 ade3coats in both fresh waterqf3c-e9d a 3cj and in salt water. Where is the buoyant force greater on the boat?

  Salt water is more denrz)j;83t r6 zztbra,ose than fresh water. A ship floats in both fresh water and saltrzjtzrra oz;t3,b 86 ) water. Compared 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. Where is the buoy8ely+5 (oudy opm 1;peant folo yepo m 8yp;5ue1+d(rce on the ball greater?

  A 10-kg piece of aluminum sits at tc, pe+cd+yd aj3r;.ouiu y4d: he bottom of a lake, right next to a 10-kg piece uo,j3e+: r u;.dya4y+ cpiddcof lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If d jb94st+6eeub /o-u49vlhko) wqhs2the iron is removed from the wood, what h)6 l/s 9eh o9jv+ bo4e2us4tqhudw-kbappens to the water level in the tub?

  A piece of wood is floating in a bathtub. A sk2ih8eh m1ca 8 omepo z;;(oouc:(zv*econd piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in tozepce:(*omooh;m8 v 8ci( ;1a zku2hhe water, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at pbo5yfq; cvqj* l0ta x5,gwmqs/ tc/+/oint B is larger than at point A. Where is the st;f,lcx /yg a*/cw55+ov qmjt sq/0qbpeed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If thb2l0 vj 4qlmv)e pipe widens to twice its original radius, what is the flow speed in the wibvvql4 )lm j02der section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If g) hujt nbdf+/ ofjn-0vi2t1/the pipe narrows to half its original radius, what is the fl j-/dbvnh 02oitgfjnf +) u1/tow speed in the narrower section?

State Bernoulli's principlec0dri(k3g 6uu.

  Which one of the following is associated with the law of con134z6ebkb. /otk:jz3 w hl t,or g4puiservation of energy in fluit3wg 4b 6 4 .lhpj1kob,:t 3erzuozki/ds?

  As the speed of a moving fluid iip957g k 0iibkaxi**sncreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipnbc y /bg;7w7)igrai) e at point B is larger than at point A. Where is the water pressurew/b); ycaii7)grgn b7 greatest?

  When you blow some air above a paper strip, the do-l ,1szbk2(chzo-e paper rises. This is because

  A sky diver falls through the aia2 ad t(y qu7q4mrip*l- 6ea(..be rair at terminal velocity. The force of air resistance on him iu im ae-dp*74bayi .qr2la(atr6.q( es

  Two Styrofoam balls, of radii R and 2R, are released simulm a2)klkgf 4q;wd f7p*rc.)jwii j61ttaneously from a tall tower.qg4l)fjpj 7cwrtmd6w2.k; )*fik1 a i Which will reach the ground first?

  When a small spherical rock of radius r falls through water, it experienceik /y;xn5d e:ls a drag force k: ye/5nil;dx $F=arv$, 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 tk*a)mo .yx ,6vxzyt;she flow of fluid through a narrow pipe? That is, if you made a 1yz tvax; kmxo ,.sy*)60% change in 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 hasd vf /hkgb0q4n0* oem: twice the diameter of pipe A. Water undergoes viscous flow in both mbf0nk*hg eq d:v4o/0pipes, 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 hav23kf-k 4d qeige the same diameter, but pipe B is twice as long as pipe A. Wk ed -ik2fg3q4ater 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 the flow rate in pipe A?

  When soup gets cold, it often;*gcejv, nef, 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. n,e*; cfj vg,eTo us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to c+isn(a n20 u(eysob.0 bpx;qa height h. If the diamet;exsnuqsap.+b onyc0 (2 0(iber were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight twr 6(y e2voe)/8l uexe f+,rwuhat they can run on top of water without breaking lr 2ewy veoruu+)wx e8f(e ,/6the 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 sufficiently lighthtmrj0 y6ow znovn5 +58fz9 e*weight 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 t908vmr+5 jney zow 5*noh f6ztwice 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 cfaob9y 1xvp (/m x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is itsx /f o9(abp1vy density?

  A liquid has a specific gravity of 0.357. What is its d pvcw s89fpv0-ensity?

  A brick weighs 50.0 N, and measures 30.0 -m.a /dka3vhwow2-kqff/d6 z cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizz fkk mwd2 o-/w-a.v 6fahd3q/ontal surface?

  A person weighing 900 N is standing on snowshoes. E1bq*md ) agw5qct e:4dach snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120od3kc+ 57p ,d qclr p:mqo9pmm igv170.0 m in the:dqo5o c0 k vmgcq1pmm p3d,7l9+r7 pi ocean?

  A circular window of 30 cm diameter in a submarine can i o3:b/p9v pmys,9dkj withstand a maximum force9idkpo :/m,3yj 9vps b 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 absolute pressure erdve -n60sc/0 oiw86klc-x xis 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface o6wk;u6) gdxe g+ ps5 tzee-b-xjiw/y0f sea? (The density of seawater i- kutbx50)+;/ e6gz djpswxyigwe -e6s $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a; 0femu /lgs)t location 15.0 m below the surface of sea? (The densusm efg0l/;t )ity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pist9oe;4ei xg20 umrpi7lon has lxo 2uemg4i9;0p r7iearea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the small pistonvu*om :1k3kptx 8,xfd has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small 8t ovx *fxkd:u 1pm3k,piston in order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lif;-qzd9knir ( fted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm di; k(qrf -9nizdameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameubkl rnl), crg0g5 ;2v;ag.hvter of 8.0 cm, and its large pisurl g,b2 l.khva)g5 n; r0vgc;ton has a diameter 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 N in water. What is the buoyant fo(p0vi*8flnsy d3p ; mwrce s3f0*pi n;m(lwvd 8ypof the water?

  An object has a volume oldq yq)*ta9c* f $4.0 \; m^{3}$ 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 subemguvc a9 :(j1merged in water. What is the tension in the string? (The specific gravity of iron is 7.86(vcaj:m 9e1gu .)

  If the density of gold is 3 4/0t xvbe3yxfvis1 t$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steelty . /y0v)r ,m vihi;u44gzpcl 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 it is in air and 6.86 N s jby*+,q*yjkao) l:ywhen it is immersed in water. What is the specific gravity of thos ab q+ )*ky*,j:yljye object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a u r:5 n,dp/j oseqf,,jq r0m;f20-g piece of copper (specific gf d ru pn ;:,js/q0f,5mrjq,oeravity = 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 f snmmr1m*w ;.sa+w w;sxic00qb) gp4mass 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 w3 dwmj.tg6+m uill just barely float in water. What is it+j.m6u3 dmtgw s mass?

  A rectangular box of negligible mass measures1t u5/8 w 7yu7wfxc9exghbeg6 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before i7g b5exc7ght1ew6x f9wuu/y8t 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. The em g).v;v; vobbo-.wyekky +;)h jh;c weight of the displaced - byj o).k); hw;vov;;yb. gchvkm+e ewater is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourthncqy;t4w i*su nbar 0-/- 3p*dgd2in ms of its volume beneath the surface. What b-taymr-d/cpg dni;2q **un3i 4ws0n is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surfw1g hxc /bph),ace of the water. What is the buoyant forcepb,x1 h/ gchw) on the object?

  A polar bear of mass 200 kg stands on an93pyj ie3 pp(f ice floe 100 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 0.98pef( y3p3ip9j.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find bt. t6zz3eatix:t-dn7yh :9dthe flow rate.

  Liquid flows through a 4.0 cm diameter)h ov;1zyl 3p o99lpdl pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in th3 ; l ozp9pov)dy1ll9his restriction?

  Water flows at 12 m/s in a horizontv)bnpax* 5+ zaal pipe 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 kd6r-h0g2 oe.-fxr-3zxil wutake for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the i0 2r-u.3 fdlxrexowkz-6h-gpump?

  A hole of radius 1.0 mm occuas*k k b8v4f2mrs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flm*2 84bkfaskvow out of the hole?

  Water flows through a horizontal pipe of c/xl - l-ufd5.wdd7ewcross-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 ta39kc7rtgeu; nke 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 the9tcg ;nr3k ue7 upper part of the funnel.

  Suppose that the build-up of fatty tissue onz) 2xizq8.3 arzun;h j the wall of an artery decreased the radius ;2z.x 8iu zrahqnz3)jby 10%. 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* 7 8kkhy0psrsg:1v1hz7pjct qj3 :em of water. Tube A has twice the diameter of tube B. If water jhte:m 0p78j7kkz 3yrssqv *1 :1p hgcrises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of wate(ci*d ne8*i8-+:j t0usan hkml4oyfx r is 0.073 N/m. How high will water rise in a capillary tube of e8c( a lhk:di*8t*s-mf xn0o4 i+unyjdiameter 1.2 mm?

  232

  To what height would water at 0 dedym p00 yo:s:wgree Celsius rise in a glass capillary tube wis0 d::ypwy0 moth a diameter of
0.50 mm?

  A narrow tube is placed venn7h3n*mn /wza6f e 9 ;x+pfv)da-dekrtically in 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 he)7/ e6nn9-fkmzd 3;a an*n+w eph xfdvight of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.60ub26sdfizk . 3+s 33un:jlptt 0 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 o3ts u62dp sin.3kl uf t:3+jzbn the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and vs-ktjx. ,7b ,f4d jbbwidth 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 adjustable long side so that the frame is 12 cm squav 4bb,bsxkjf-t7j.d , re?