The three common phases of hknec0g:a 9m i5g/u*8fzh-asmatter are

  Density is

  Substance A has a densjavmas)t+z /aw5 6vd1 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 followin ccad2 3bq09,nyop6ja5 wq1z lg is not a unit of pressure?

  Consider three drinking glasses. All three have xsoh6n:z . 1jnthe same area 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 holdsx1:s nn.zjoh6 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 presntmk c-13,pprsures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at 81 zmm:kkee4dw-5 v slthe bottom of a - ml m:wkkd8evze5s14pool?

  You are originally 1.0 m beneath the surface of a pool. If you dijh+mj lh x9bsrrd8+38 ve to 2.0 m beneath the surface, what happens t8jhhx rr9d8j lmb3+s+o the absolute pressure on you?

State Pascal's principle.q77xdu mt,(f p

State Archimedes' prbr2,l 7dj 9tl)r htph2)w)rz j ,wlny/inciple.

  $50 \; cm^{3}$ 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 happens sqebqtq *d,4eicc 4z;zchx c +r*8(5ato the buoyant force on h x( 4*5e+4scqz8qt,dc bia ;rzccqe*it?

  Salt water has greater density than freshjw uy4 2rpo *xw0/d.hb water. A boat floats in both fresh water and in salt water. Wher0b.4*huwxp2/ r dy ojwe is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fre3( ogrqs5o- wpsh water and salt water. Compared to the fresh water, the volume of water dis-p5o oqs3wr(gplaced in the salt water is

  A steel ball sinks in water but floats in a poolv a ,e4wuel5f3 of mercury. Where is the buoyant force on the b53 auflwe v,4eall greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-p, tqj0g f97uekg piece of lead. Which has the greater buoyantgf9, 0ujqet7p force on it?

  A piece of iron rests on top of a piece of wood floatingwo3q wz2nny*v -/ xv6n+0m99lo q+rf e mnn/vp in a bathtub. If the iron is removed from the wood, whae2 f3*rn/-n +mnwp9/o+x qq6 vl0nvn9yvm wzot happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A secondfh aek;7l+jj l2ld,7 m piece of wood sits on top of the first piece, and does not touch the water. If77 , 2l jjfha+;lmekld 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)(c 05msfcgmw at point B is larger than at point A. Where is the speed of the water grefw0s (c cm)5gmater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twnf8 whmr .w all:py6)8ice its original radius, what is the flow speed in the. m)l8w6ny8prw la:f h wider section?

  An ideal fluid flows at 12 m/s in a horizont z e+y)-e ds)*(vdznleal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower sectionv de(z)-ee*n +zl)ysd?

State Bernoulli's prih6pq0ms oe(d 8nciple.

  Which one of the following is associated with the law of cons6m0ugnhght fx ( ;)d2servation of energy in ft62nmgg(su0dh x) h; fluids?

  As the speed of a moving fluid increases, the c,50xgr6.bvipg t6g ndva2n5 pressure in the fluid

  Water flows through a pipe. The diy75bz/q2wbgv ameter of the pipe at point B is larger than at point A. Where iwb7bg qzy2/v 5s the water pressure greatest?

  When you blow some air above a .s7tb r6h,lu n ;purx)paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. T d(hajl:2 yc(che force of air resistance yc hlac ((:d2jon him is

  Two Styrofoam balls, of radii R and 2R, are released simultane p ;k,r k4y.r 395n ryq1f(wonco2vhrjously from a tall tower. n1vh;r 3jofk2w yn 4r k5ypo9r,r.q(c Which will reach the ground first?

  When a small spherical rock of radius r falls through water, it experiences a d+ *l3eox moe99znuj -drag fonoledxj+* 9me9u o-3z rce $F=arv$, 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 ff7e0ht m8;cf nlow of fluid 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 flo8tfnh; f 7mc0ew rate?

  Two horizontal pipes ard: )u:2 5 mon si1)fmqh1rhyjje the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressu5: :rsuh jyj2h fin))mqod 1m1re 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 diameter, but pipe B is twice as long as pipe4k(1 x v t8kdyh0tvk 1.gnc.vl 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 vh cxtn0 1tkg1yv84.v( .kdklis Q, what is the flow rate in pipe A?

  When soup gets cold, it of(j/:gf7jzf-wqa cwd8 ten tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup,aff7jw cd-z/ (j:wg8q instead of staying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is t-yazo:2/*j a8 8s tl rwfo79inpu8xuplaced in water, the water rises to a height h. If the diameter2 r-ojn uxiy u/88stpfata9wlo 78*:z were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently9qszh- gs*vg8 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, igs v8gh9qsz-*n 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 lightweight that dus mzq e t e,k;a0(05r8x30mp,si* q+dwqjwgthey 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 bawte i;sm03d gus 5ej+,q*q( k m0p8wrq0xz,dig as bug A 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 dimensionwpvct6( b1w9x e, agj2s 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its denegacv 9ww 16,2( xtpbjsity?

  A liquid has a specific gravity of 0.357. What isi, py+0 ay l/nf2c8rhx its density?

  A brick weighs 50.0 N, and measures 30.0 tq/qjw+thw7v em*.+t cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can e7 w.vejq+t+* mqhwtt/xert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowt siij6f hd1725 vsji+shoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 1cc;n i4e1bjg5ij()r g 20.0 m in the b)je5 4 r;ig1cgcn(j iocean?

  A circular window of 30 cm diameter in a submarine can withstand a maxi789 j pbvy,dxsmum force 7yxjsbp ,89vdof $5.20 \times 10^{5} \; N$. 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 prj7ra ndan yw(i)0 y-k:(1v jdqessure is 300 kPa?

  What is the gauge prb nfco(5l6yx 2essure at a location 15.0 m below the surface of sea? (The den2fo(c6 x lnb5ysity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface clikcbbl,6o8t4l f57w c9b h (of sea? (The density of seawater tli678( w,obkc ccf4b5l9hblis $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydhn4n qx*gp /5qdy 6nl3raulic machine. The small piston hayh64ngx*n/ q3pn qld5s 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, t4ykthslmx-iz(*7 :1wi u iih9he small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. Whatmi (iz*h9w 1ux l47ity:s-khi 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;i 3jnt nc/fyj*v.nhd+ kq,y 18+,4 ueihqfobiameter hydraulic piston. What force needs to be applied to a 5.0 cm diamete u8fhhjn3,d +to ej/i+fyv c.,*bk 4q; iny1qnr piston to accomplish this?

  The small piston of a hydraulic lift has a diq9v/s, 4bd 2oafhux6b-jjz)kxik 7) k03aiv h ameter of 8.0 cm, and its large piston has a d0od)hk xkaahb9-vi2j v,qsu fbk /367z4)jxiiameter 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 4hxwz o)97r,zv 0 N in air and 30 N in water. What is the buoyant force o)z,w o9x7 hvrzf the water?

  An object has a volume odt.ipl l3:rd6 f,b bl1f $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron 60fdkoe3*b:my1 y 8b 8ncbokjis supported by a string while submerged in water. What is the tennyde 88c0 b:31bf6 yojmk*ok bsion in the string? (The specific gravity of iron is 7.86.)

  If the density of gold t2gq khhm5: 0kczt)y.x .t1qris $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel sec329ui c( e3z6.twi ch rxf(uy64antubmarine (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 xlws53n nvo9.fb;ll.p ) xn q.in air and 6.86 N when it is immersed in water. Wh5w.lqlxx9. )lb ;.nn3ovfs npat is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 gk3dmwqkf8 :- id3 ,pfgz )i3oc. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered :mkf3i,3 oiz-p 8wfd3cg)d kqinto 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 :nsq(dg2/d6br.qdd udensity 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 jusishk4: igg(ag 1n h3l3t barely float in water. Wh khhis4gi:(g nga 33l1at is its mass?

  A rectangular box of negligible mass measures 5.0 m lo.m7) yjrk , ,l* -btcuhj b3v9e*,f;ji mamwgong, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the blr-wgy, u, *9 j*htbv7fk .omeic,;bma3m)j jox 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. Thnns3t 3p/0rpr+ 0lz deixt4w+e weight osd4/n p ttep03xnl w+ irz30r+f the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in 2 kutjr26d40oo9t xuvwater with three-fourths of its volume beneath the surface. What is the object's densityu4td0 xruot92vj6 k2o ?

  A 200-N object floats with three-fourths of its volume beneath the surface mo.g:d4gf 3 y c51newhso3og/of the water. What is tyog mo 3wnh:gdc e 5o/fs1.4g3he buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the min))3 ( nsy+rcchxph:oximum area of the floe that will just support the bear in salth3yh)+pc coxxsrn):( water 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. Find the flow qw52iaqwu3+hk8u ud/ b svb,* rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is oy4 t bb*gr0 *x+pu:yoa 2.0 cm diameter restriction in the line. What is the velocity in this restrictio b*ty*4uybpoo g0:+r xn?

  Water flows at 12 m/s in a horizontal pipe w (o4siw9j)b-*ndf 7ma+k7uf0l w jtfiith 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 hyb* ms4 f3y+jwith 300 kPa, if the founmy3b* fysj4+h tain is 30.0 m above the pump?

  A hole of radius 1.0 mm occv8fg; )dm2fppoe6 .4b* mityrurs in the bottom of a water storage tank that holds water bvy4ro. etgfi f;pm*d6 m)p82at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional areec b3 4ovl73vca $10.0 \; cm^{2}$ 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 wou- zhu 2mcqrka z1hu0-.ld 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 aa hr. h-0u-z1zuc2 qmkbove 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 on the wall of an artery decreasei6,m+8py g-h 2pynhw)xs c9 iwd the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintai6hs,h9 wi-x w8)igyny+p2 p cmn a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameter )eez+oojjtt +h85a ,0 (vxcdnof tube B. If water rises 24 cm in tube A, how high wiho+0,(etj5 xj +a d8tv)zoencll it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a capif: gqhoaxio:)nc61 0mllary tube of diameter 1.2 mno0g:h1xq c m) io6:afm?

  232

  To what height would watb; l)/,4, rh zuxhtyeeer at 0 degree Celsius rise in a glass capillary tube with a;4,xb)hue, lhr tyz/e diameter of
0.50 mm?

  A narrow tube is placed vertically infikb ad x5kxfs 0-6m.8 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 thfk.a ik 6bx 085mfx-sde addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular fbn -k ao g /tmbu+,6lo0l5t1zurame of length 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 - kzo,to5/mb+lubngul 6 a1 0tthe soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and i * *nchmzku:cd 92(1gee i(cows built in such a way that one of the longer sides can be moved without bursting the soap film contained in the fra9(w h2mzce u(ci* ko: ne1gc*dme. 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?