The three common phasemob4,; di48v2eow3xk yrfy-cs of matter are

  Density is

  Substance A has a density 9z tw5cwce, +kc*;kxhof $3.0 \; g/cm^{3}$ 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 )h7kq5y6jucj: ,dlj anot a unit of pressure?

  Consider three drinking glasses. All three ha /s8- oc2cowoeve the 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 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 liqoc-2c o/s ew8ouid pressure at the bottom?

  What is the difference between the preszt2op9 g8b )u00hum. gn5ywp;rmiws/sures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute.)4rzpuxo y1+foz f3 k pressure at the bottom )+.foz zruo f31xy4p kof a pool?

  You are originally 1.0 m beneath the surface of a pooea 6mw2w)y kv(p1dfj 2l. If you dive to 2.0 m beneath the p w2je(dy 62 wmvak1f)surface, what happens to the absolute pressure on you?

State Pascal's princip7:vk e zp,wo;o f1dz:87rbeka6yz0cu le.

State Archimedes' principlexzvfwe 3j61 *z+hp- sgi u;g1l.

  $50 \; cm^{3}$ 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 densl*ysv 8my0:vg ity, what happens to the buoyant forceyy8 v:v*gslm 0 on it?

  Salt water has greatt6yc e:ed3gx;pk6/mjer density than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater on the x6e/j;dct:36 gmp yekboat?

  Salt water is more dense than frel;upgnvy) had/5jdwe b8q77 * ylq;(bsh water. A ship floats in both fresh water and;jd( wg 7 vqh;bp/ y785ey ulbd)lnqa* salt 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 p cs y7f:6.:cgbqv9/icitw 1 lu6ryab 1ool of mercury. Where is the buoyant force on the baa/g 6i1c1ucw6ysitb.lc f qbr7:9 :vyll greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piycb kv94ky:: iece of lead. Whkyicv 4: :k9ybich has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wor+-9bwuw4o gaod floating in a bathtub. If the iron is removed from the wood, what happens to the water level in tboug-wr 9wa4+he tub?

  A piece of wood is floating in a bathtub. A second piece of wpyk71r uevb 3;yp9 d:xood sits on top of the first piece, and does not touch the waxedv y1k3 pp;r79by :uter. 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 larger than to (8p 1+hnlmrv txf92at poi 8 nt rtpvl+2fo9(mx1hnt A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontalx tt6mtr k dzae:vu4j n+::0t2 pipe. If the pipe widens to twice its original radiutrk 06mj:tnvx4 t:t ea:+z u2ds, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe)/bupsfq3ms5ke2 raa c7i, e-. If the pipe narrows to half its original radius, what is the flo i/7pseq3sekr baa 5,c2 uf)m-w speed in the narrower section?

State Bernoulli's prinndszy wf*(2.,k yqucmo r-/d5ciple.

  Which one of the following is associated with the law of conservation oflog vdj5n(5nu c bd-8) energy i8)-odg j c5vlu (5dnnbn fluids?

  As the speed of a moving0tmd97yx.g*(er i fu-b8ff tv fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger tha56s pqwhpw6p7n atws67pp65 hpwq point A. Where is the water pressure greatest?

  When you blow some air above ai-pr x/pco;-q paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force dbfh) qk vx54ox82v 7/x qied7of air resistance on him2)vix7xk5f d/hxv8be q7odq 4 is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously frclm 51du ,8ypfom a tall tower. Wh5my,lp dufc18 ich will reach the ground first?

  When a small spherical rock of radius r falls through water, it experiences og86s3c+um - sezqkp**pjep 0a drag forcqe 6o c*uj*sz3k+ e0gppmsp8 -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 effect ne870 u boy-qoon the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quanue n8qoob- 0y7tities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twicet66w ) q8mrjifr:n(wv the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same prw6(qi6: r )wrjf 8tvmnessure 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 l: ;tpx ll;ie0long as 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 B is Q, what is the flow rate in pipe Atl;x ;el l:pi0?

  When soup gets cold, it often tastes greasy. This "greasy" tasteqhakk -( rx*vr(ka6* b seems to be associated with oil spreading out all ov*akaqbrk 6 -kv*rh(x( er 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, the water r *s k,xr-zx e j82bnbp.v:1ytnises to a height h. If the diameter were half as greatnp.x 1 2ybsxrtk*e,vz:- bnj 8, how high would the water rise?

  Certain insects, such as the water bug, are suftn fg( 1dnv auouzgmk+a 9576-ficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B g u- f(7na15uz9t+gan md6ko vis 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 bu d);y pr,ps5fvg, 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, ; yprs5 d)pv,fexerts 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. What is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x nd6vck ye5w. ( 2s9l,c8ue tbop-9m e*u(gnql 3.00 cm x 4.00 cm has a mass of 30.0 g. What isw6eu.s*yq 8p, 9 g5celnbtemnc-ko(lvu 2(d 9 its density?

  A liquid has a specific gravity of 0.m vwkzy+u kx,/n2,3cz357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm xh)r l nvl g+k711fyvnkvu;(0x 4.00 cm. What is the maximum pressure it can h)n fklg+0v vy7 (rnl1vku1;xexert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Eac rj8 3fha3.*pyc )uixnwp,s d-79eu ifh snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand ae 323 k;tqmsu 0b2ijtwt a depth of 120.0 m in the m2ttq0ukb32ws3;ei j ocean?

  A circular window of 30 cm diameter in a sub mbf xhy-22dzcv;1q l8marine can withstand a maximum force ;h2 dlf m-z8 c1qvxy2bof $5.20 \times 10^{5} \; N$. 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 absoldml2*6jn74wj 9ve -8at s:of l-gqhn lute pressure is 300 kPa?

  What is the gauge pressure aji0e((u r;x sat a location 15.0 m below the surface of sea? (The density of seawat;jeuixas ( r0(er is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressl8 sn,uxui :-un( 9bbwure at a location 15.0 m below the surface of sea? (The density of 8l9uuu nwb:xs,- b n(iseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulictkg,,qwg: vp 0 machine. The small piston vtk:gqp,gw0 ,has 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 radiwowwxsi1 m/1 3k7h flpv, jv/weg-(i 8us of 5.0 cm and the large pi i3/l8j1vf ghx sik(/7wweov-1pwmw ,ston 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 large piston?

  A 13,000 N vehicle is to hv/3u,6yn;2 kyt.9pm z mp h+hpizfz2be lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish tm6hy z z.,ihpmytv9fpn/h2 u +;23zpkhis?

  The small piston of a hydraulic lift has a diameter of 8rc5a xmt:b3.erga p*).0 cm, and its large pistonrtbc a. )rma3:g*5xp e 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 ieoext9p 1szyys -8uf v9glbld(+/q 61n water. What is the buoyant force 91 l eu soe+(xt-z8 6fdp19/byqvsyglof the water?

  An object has a volume of u0 k( .arggpqew1i gc4z3 g2lw3bx -*c$4.0 \; m^{3}$ 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 submerwer.yd+bg4 6iwt q6 pw 4fgl:9ged in water. What is the tension in the swwlr +:gwip66yfet9g4 . b d4qtring? (The specific gravity of iron is 7.86.)

  If the density of gol4i*5 bkt1 nzuy4sz r(i/r3q uid 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,b5 o0tub n:f,(rq d bdyis8; h0 pqbev7a2s/s 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 when it is p.vfmaewx, 4i5kva6l7;i( .v u0br mlimmersed in water. What is t,ii0k eu;. fl. wmva5(l4vvampx7b6rhe specific gravity of the object?

  A container of water is placedhc k0zc0j 4f:y on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and loweredycj40c0 :k hzf into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a m.iv a ql00g xxd,vgx17cfv/ ;qass 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 dea0(006 (puag9he gluabi d0barely float in water. What is its pughbedl000a0 ( auea6 d(9igmass?

  A rectangular box of negligible mass measures 5.0 m lod.w1xzs4r ic 5ng, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be xrs.zwi cd514loaded 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 weicu 3 gt b8wz*m1bi.fj.ght of the displac u 3wcbmtbi81*f.g.zjed water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fn55.hu b,avfsg k4 mm1ourths of its volume beneath the surface. What is the o ga.u54f 5bk,hmsvm1n bject's density?

  A 200-N object floats with three- 03 ixjt o5)i/7t*s :n+jjy5 hxkzdxgsfourths of its volume beneath the surface of the water. What is the igj3 dsnh:/)jzoxt*tj +xki5ys0x 75buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is(nz k(c. qlv-e the minimum area of the flo-c.ne v( (klqze that will just support the bear in saltwater 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:-syut om( rgot7*.hc the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm di-r t3jh5f6g*lqw ec2j ameter restriction in the line.gh62 qcj*e 3ltw-5f rj What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pl2s s8tbag/m fj1a: 2-86bz sycbv p3rressure 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 ieh;pab p5ri1 0af/r*(bq;qoef;z m 7z t take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m ab;fhbfpi*/e1( ;5z br ro;q qzm7ap0aeove the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that0*ay72nxxz gv8l gt+s holds water at a depth of 15 m. At what rate will wat yxlzx 7a2g8n+*tv0 sger flow out of the hole?

  Water flows through a9b m b)-(muqr0j:hsh- rp6i.hkk q:aq 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(v-t* e 54gu7x qcqa+t1sex dl of 0.20 Pa-s. How long would it take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diametertg*c+e4eda q u5 q 1l(xvxt-s7? 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 on the tl dt(hd r72e8wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be i2t(d derh87ltncreased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice 7ua(ia7ew lw8ib7 -v gthe diameter of tu-v i8u7weiwag 7 b(l7abe 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 will water rise iv9 6 py2 :j(xk9 z0fri:hqxwjln a capillary tube9h k2jiw x:lxfzvy 9:rp(6 0qj of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsiu p w)1 bh+ bai73 l*vo5a3kq-wkkm/txes rise in a glass capillary tube with a dio1awb+v 3empw3hkibkl *)7q 5 x-a/t kameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the y /py36jds ulgs:x7p;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 byyl/dg: 7uy x6pj ss;p3 the addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.i- mb57fg :qbbz)xh 6c120 m and width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.02mbchg:b-) 5 fzx 6iqb760 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and widllh2pfdi*4p7 ;e s2tdth 5 cm, and is built in such a way that one of the longer sides psi74tpd22ld e f*h;lcan 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?