The three common phasep/ yqgnt)5 -xo z1j xn:w)7rvibwn) q0s of matter are

  Density is

  Substance A has a density of 2dcax,prg9 40 qqdh(o2y(3p .lz htom $3.0 \; g/cm^{3}$ 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 pispu o*rs1cf6e 7s9k)ressure?

  Consider three drinking glasses. All three have the same area base, aniewji*ep6wivpse +(:x2 h- 4nd all three are filled to the same depth with water. Glass A is cylindri(e s x*hpnji+ vi64w ie:w-2epcal. 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 inside and outside a tire called(7 ..cf5ct kitmq1ni w?

  When atmospheric pressure c g(ba.)y: xad-ok5p1josdja*gtc t87 hanges, what happens to the absolute pressure at the bottom of a p j j:)a7c1aap-*b8to d dsg(5g. xoytkool?

  You are originally 1.0 m beneaq- ,:yp b1ajxfth the surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absoly,ap xjq1b-:f ute pressure on you?

State Pascal's principle.88ybq6hd g/px

State Archimedes' principle.2q ; z;frz7ouh

  $50 \; cm^{3}$ 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 ofcme u*a ge0ux c;;nt1( constant density, what happens to the bu tce;(ueg1mn*0uax;c oyant force on it?

  Salt water has greater density than fresh water. .ix,uk9 )- qrn;-axw ,jmizd iA boat floats in both fresh water and in salt water. Where is the buoyant force greatuq,;nkr za-dm9x j,-).ix wiier on the boat?

  Salt water is more dense than fresh water. A ship fc e ag*7og*r)l) c*mvdloats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is*ecalvgo) *cm g)*d7 r

  A steel ball sinks in water 13dkrprtpt -9 but floats in a pool of mercury. Where is the buoyant force on th - pd3kptrt91re ball greater?

  A 10-kg piece of aluminum sits atemx:v5ktnc8 j91e )cx the bottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyantv1nj5x:ec8cte x)k m9 force on it?

  A piece of iron rests on top of a piece of n0.pp nyv es);: o4kxtwood floating in a bathtub. If the iron is removed from the wood, what happens tn;vn pky)x.soet0 :p4o the water level in the tub?

  A piece of wood is floating in a bat lp )oh t(;,6cttbkxz/htub. A second piece of wood sits on top of the first piece, and6 t pc;,(kbt/tzoxhl) 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 diameter of the pipe at point B is largefm fiyjhfnw52ei0h 8+zh8/v6 r than at point A. ji 2e 6w+85 mn hfhyzv/iff0h8Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If aq.ziy5 h9ysuy.4oj70lz *u pthe pipe widens to twice its ori u5u9aqyhs4y .j0*zzoy7 i l.pginal radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizon5wu4q jez;c0 btal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower secw4bjcq50 zu;e tion?

State Bernoulli's princiz1ha:b7gzdr-o/ g9h dtgbri f*(pm t95h64ycple.

  Which one of the following is associated with the law of conservatxl 0o:wkkpd9qn6-n8wion of energy in fluiw :qx-nkk9lo8d0w 6np ds?

  As the speed of a moving fluid increases, the pressure in the fluidx(zb wheukx y r ,./e0y5q/-w xg-hf;x

  Water flows through a pipe. The diameter of the pipdpp;f dso;s ,,4bw kwge:thn,3v7r*w e at point B is larger than at point A. Where is the water pressure ,;pbh,sr p*v wt;4:k g,wwed fd7on3s greatest?

  When you blow some air above a paper2o g ,ydtd6cc9 strip, the paper rises. This is because

  A sky diver falls through the air at 0ec1dh;wybg. (bb0 yy terminal velocity. The force of air resistac(yy0 0;gwb1dheb . ybnce on him is

  Two Styrofoam balls, of radii R and 2R, are released simutwj ndvdd+-q4cz*f-3, gq3o r f5bicv2ok) 9wltaneously from a tall towc+vgf3 nodd4b 2-fzc,voi3 jww)9q dqk5rt*-er. Which will reach the ground first?

  When a small spherical rock of radius r falls through water, itwn:e1sxcw1a6d zd 4 8p experiences a drag6 dwxw4 z 1sp:8ncdea1 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 l9bb t;2q2fmpzgkcc6la4 38 rnarrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in c84 zpk6t bq g;3lcm2 rbf9a2lthe flow rate?

  Two horizontal pipes are the6l2 . 9t6fq9mtc arbvcfi3sl - same length, but pipe B has twice the diameter of 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 A is Q, what is the flow rate in l39 cavc6.6t2lfsq tbi mfr9-pipe B?

  Two horizontal pipes have the same diameter, bu 66ysixu;b+z ut pipe B is twice as long as pipe A. Water xs6y 6zbi+uu ;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 tastes greasy. This "greasy" taste seems) hm.:mg q8spy to be associated with oil spreadimq.g)8 phy:m sng out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, ttq /p):t sh/bahe water rises to a height h. If the diameter were half as great, how high p/ h:a/qttbs) would the water rise?

  Certain insects, such as the water bug, are sudsaujpq( +-m( z oc np(zu(8:tfficiently 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 b((pdc8ajpu:+t (-zqz(mos u n ug 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 sufm-.kn1izf iqiue , .n :hr*w,kficiently 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 long, twice as wide, etc. iwmz*ufkn ,enh rq.i k i-.:1, What is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm xiy2:/r, psz nn 4.00 cm has a mass of 30.0 g. What is its densi:y,ns rip 2zn/ty?

  A liquid has a specific6/95ec8lpupa21qbmmj vd u5z:* gwg k gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 1a-a-a+bvup 6/+*u h mlf a4i;gbuz) bp0.0 cm x 4.00 cm. What is the maximum pressure iml-uba 6; p-aua4 f*hab++/igp)v bzut can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoe 9srkz-,4lkops. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a -qsu7 rw*0u4yqns2q d s r-rn;depth of 120.0 m in the oceuuyssd r;s q rwn*r 2047q--qnan?

  A circular window of 30 cm diameter in a sub ) 5pqaro q+73o t(c4n)akojnamarine can withstand a maximum force of oro on4 )jan ct3kq+(7a)5paq $5.20 \times 10^{5} \; N$. 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 kwhn7 i iz2d0:l3ep)ixPa?

  What is the gauge pressure at a location 15.0 m. oajlnij) 89t below the surface of sea? (The density olinaj j. 9ot8)f seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sea? (cp/z. tawkv/ 7The dec/./z7t w pvaknsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic mhpnlcx dq0esr;h8lgt l* ;2j0rmo * 87achine. The small piston has are llhjd pmcg *h rt80o;8seqrn;7 *2lx0a $2.0 \; cm^{2}$. 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 lu im9( kut 9/i8mt2vuqarge 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 the8vu( ium9t /i29mktqu large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diare-n*k9+* s:q6c dp y cu0er9gs8xwqcmeter hydraulic piston. What force needs to+pc r : -6uxc8e9 qwrgenqks 0y**cs9d be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its lva jg53zrv-fvo:9 h wd*bk qh+5v-nj:arge piston has a diameter of 40 cm. The lift raises a load o5 dv:-z9+rjh5:v*hojf3v-bqv k g awnf 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*0+zgl qy qk6q force of tq0qy gk+6*qlzhe water?

  An object has a voluxx s79 dm w1j6*euo5oime 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 submerord5 uoznqwu+x - ;a3;ged in water. What is the tensio;w3d aunzq-o5 xu+;r on in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is 0bf)pqluqmoa 2f8j4 4$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subm:cg/ 6 en-b7 ,w htey0smnwj)parine (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 isdc)(h nbbnuqcy e,2t yjyw jj:/(-9j7 in air and 6.86 N when it is immersed in water. What is the specific gravity of the objech)ccyjb/7b j j,j(ytqd(wn2u:e y-n 9t?

  A container of water is placed on a scale, and the scale reads 13 62iy e:fulae20 g. Now a 20-g piece of copper (specific gravityf l3uaie2 6:ey = 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 akq( wn9fen z30 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- b/zzj3r2pr.; z)sv(cdr . lcedck. 3tchy)o diameter 2.0 cm will just barely float in water. What is its mas z)cs-czoy/.rzc..c r3p);(t3e d j bvhdk2rls?

  A rectangular box of negligible mass measuolppe)x;rbt7p,5 ; trres 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogtlp ;ret 7; 5)pxor,bprams 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. The u/ v*oxdp y;)pweightypvx*o) dp/; u of the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in wa 3mrfjl5mt9b-.(ctlj6 sbi 1b.ftmq(t;a0fh ter with three-fourths of its volume beneath the surface. ( qjjtrh 3.fm1 b.f-5amtc b;mft i 0l(bl9ts6 What is the object's density?

  A 200-N object floats with three-fourths of it-4arih dexb1)zyq .b)s volume beneath the surface of the water. What is the buoyant force on rb)xi1ezq)ay -b h d4.the object?

  A polar bear of mass 2z tt**l/jau 7r00 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in *rta/ z7t* ujlsaltwater of specific 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. Fin7 i-zmnhm b-1ud the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. Thd c:e. n pbubh(/-ytk7a+exr/jxsy 7+ere is a 2.0 cm diameteh scx7.d a/b j7e/ btp-(y+yuxrenk :+r restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s acqoud3 apwi.v/3 d; 8in a horizontal 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 take for a pump to supply a drinking fountain faf*teu b (3e+jrj.-rczse4)with 300 kPa,b z-ua4+cjr). s*eff3j er(et if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage y)s8qy(qf ,cv tank that holds water at a depth of 15 m. At what rate will water( )y,c8fvqs yq flow out of the hole?

  Water flows through t mxfvf7zq9ck6qyj +. i)q s,2a 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-s7fp- *,fg-i6k pfky/hit umo;. How long would it take to pour 4.0 L of oil throught6 g kiko-*mff,i; f-h/p7uyp 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 fatty tissue wnf apjp5( (w;ij -7phon the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the hear-i;w(phwa(jpj 5n7p ft have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a p5xgw gva52 qh1an of water. Tube A has twice the diameter of tw2 1xg g5qh5avube B. If water 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 high rrhv d :*nxn2 qb:,dtdv;0r,t2 db9h1yzqb 4wwill water rise in a capillary tube of diameter,nbbd;dw,:1q xz dyrq2r 9rh2tb n 4:v*th 0vd 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary59q7 0leb -z,b *tuau bflwif..9rooq94q cyv tube with a diameterb5-ffl9 cqu07o*w.eabr z oqybl t9v,9q4 i.u of
0.50 mm?

  A narrow tube is placed vertically in a pan of water,pja6 7m00or fjm:z-gp 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:7p j r6gmz pj-fao00m 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 0.600 m with ac;tt.z;s;szzr nm *4b 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 fitrc;*4tb .s; zzzsn; mlm exert on the 0.600 m side?

  An adjustable rectangular 4.6ph e z)ihbjydi7:r frame 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 conh.hi7jerdb4y ): ipz 6tained 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?