The three common phases of matter )n0q9unfdia8+ps /k bare

  Density is

  Substance A has a density od w l-(n:t) 4qfn(q(tr x/)ilmyp ayf*f $3.0 \; g/cm^{3}$ 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 press9.vf kw b:anwlqngi1q3 nb1)k*pv97d ure?

  Consider three drinking hs *q dqvh0 h-(0o u boy+e21e)7gwmihglasses. All three have 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 holvw qh+*bg)e0q 70h(iyhuh sdoe 2- 1mods less water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference between thmt gl /r(t1yg;e pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens tohk +cb6oksp2hc/ h4-/-kozc y the absolute pressure at the bottom of a /oo bzk+p4kshck 6 /cchh--2y pool?

  You are originally 1.0 m beneath the surface of a pool. If you dx0k5/ro*d3v ldgv4o )rppu q0ive to 2.0 m beneath thpdo 00op/l 5)4 v3 kgdrxqru*ve surface, what happens to the absolute pressure on you?

State Pascal's principlem ,kmv1:ji-y::if r xk.

State Archimedes' principbfoyk a7mq0u)4bj*,ziy nhco 0r:xt *7:t0 r yle.

  $50 \; cm^{3}$ 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 const0l qo/maftx8 k7) idqrz19r31eh2knu ant density, what happens to the bur20 kho/ef311tma8u l ridq) n9kz xq7oyant force on it?

  Salt water has greater density than fresh water. A boat flotr5 t2c.l -(cp9jvqz*+ruo mtats in both fresh water and in salt water. Where is the t r tz9*rltvmqj(p-c5u. c+o2buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fr.w m/wkiej cw+4gz2md/omo19esh water and salwcg /1o/ k9.4+woi mdze 2wjmmt water. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats i. ac ktw/yhvcz afyi00:0 mrci5 fr20-n a pool of mercury. Where is the buoyant force on the ball greate025ym:f iazt00rr0vci. yfw c -/ackhr?

  A 10-kg piece of aluminum sits aty6 (zqp..la cl)v1qg f the bottom of a lake, right next to a 10-kg piece of lead. Which has the greater.)az cy1q lg.pfvql(6 buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If tmcj5p/q4.7r;th f ozdhe iron is removed from the woodt p5f./47dqhcorzjm ;, what happens to the water level in the tub?

  A piece of wood is floating in a bat4m4ny hrbct0 /htub. A second 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 the watet b4n/hmy04 crr, what happens to the water level in the tub?

  Water flows through a pipe. :unw3meszelz) 2 u8c0 The diameter of the pipe at point B is larger than at point A. Where i)0w8ec 2s u umzl:3nzes the speed of the water greater?

  An ideal fluid flows at 12 m/s in a tiwn/p g ..oq8horizontal pipe. If the pipe widens to twice its original radius,.pt8i .wn/gqo what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a hori,z) yos*ei. t8 9deg3 bnhyio4zontal pipe. If the pipe narrows to half its original 4zoygd, sh39in .ybi t* 8)oeeradius, what is the flow speed in the narrower section?

State Bernoulli's principl/un)gg .-6 rx uz7n vi(8mjn9wv5mfsle.

  Which one of the following is associated with the law of con9lcqtl iief)t b;7fg; +;,dy jservation of energy in f fq j)+l;lye bc,tit;gi;d7 f9luids?

  As the speed of a moving9b pskj. b-ir4 fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at fmd jqxxn gj2.6)3*jv point B is larger than at point A. Where is the wa6)xfq d.2j vgj* 3nmjxter pressure greatest?

  When you blow some air above a papac ;c*x;05csgyigxm, er strip, the paper rises. This is because

  A sky diver falls througnfm.m/e98xdmv n9;q a h the air at terminal velocity. The force of air resistance on him f9n.9av; n8m qme/m dxis

  Two Styrofoam balls, of radii R and 2R, i0 kob:l*v3cu are released simultaneously from a tall t*v b0 oklcu:3iower. Which will reach the ground first?

  When a small spherical rock of radius r falls through watob ))-s 9j7qf-a xdnql2,md rber, it experiences a drag forc -b 2 s-d9)7qmqjbarxl),ofdne $F=arv$, 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 effec8) 1ccxymk8jn t on the flow 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 mk y8 xcn)8c1jthe flow rate?

  Two horizontal pipes are the same length, but pipe B hasmy o)tq(+p7d f:oiu j, 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 pim7(ft:+) qyoou pjd, ipe B?

  Two horizontal pipes have the same diameter, but pipe B is tw)4o+ jsfzbc7rleacb12i- p i0ice as long as pipe A. Water undergoes viscous flow in both pipes, subject topi4 0i1zoa7lfb cr- e+)2sjbc 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"xc/oe2wx3x *c 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 readilyo /c3c2*xxwxe explained in terms of

  When a tube of diameter d is plac7wfq184i o8zl 6yjp, sbhn)u jed in water, the water rises to a height h. If the diameter were half as grealszj8,yi 1pnu)o8b 4qw 7f6jht, how high would the water rise?

  Certain insects, such as the water bug, are suffic+ddwdb 6rk-5x iently lightweight that they can run kw 5br+6xd-dd 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 long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficient19);jr cm;.byjr ryb hly 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. What is the mar r jr;.by m)1h9yjcb;ximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30. lzi:jp ui92e3 6pbgs.0 g. What is its density?bp26 9jeg 3pii:uz.ls

  A liquid has a specific gravity of 0.357. What is its densitcz*7r s7l( leyy?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm.ik0x0 sqx o6tzt1(j8d What is the maximum pressure it can exert ont 00kios61dj 8xt(qx z a horizontal surface?

  A person weighing 900 N is stw* 6j7ei yfl5handing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (abso 5a.jp -c/fnfit3eor*lute) must a submarine withstand at a depth of 120.0 m in the ote.cor*ni j pa 3/f-f5cean?

  A circular window of 30 cm diaw ffj;b/ld,vet+m;8nx lw kl5rn9+( emeter in a submarine can withstand a maximum force of f;+ d/lwxvj wl9f(tbrne,ne ; k58lm+$5.20 \times 10^{5} \; N$. 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 preay+ vvpzzv6+1 ssure is 300 kPa?

  What is the gauge press.a* 1myp+zdksws b6fdhw32 (hure at a location 15.0 m below the surface of sea? (The densit+a(p 2mw6 1d zwksy3b.sfd *hhy of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below thepnp+h*c), kwu surface of sea? (The density u +pwp ),h*cknof seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machinwc: 06 p rvwiedvx7p,/w/ 2bemsxh*- ke. The small piston haxv/pb-x:c/ekwew6 mw2drph7 v , si0 *s 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 liffff,nm0t 0spg9 xzz0 hdo3)z0) vf u-gt, the small piston 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 piston in order to lift a camzpzt , f03gnudx9fvfozs0-hg )0 0)fr weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diayzt v)geuqase tx 7n3-m ;;*,emeter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston-* 7n;,vx ;gye3q) utete zmas to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 c2 sz (wtsq39psm, and its large piston has a diameter of 40 cm. The lz(ss p2t 39sqwift 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 isu-dnge5ztw2.gco c9 + the buoyant force ofzgwntu+ gc2. c edo-59 the water?

  An object has a volume m2qq/dyz 1 ml7of $4.0 \; m^{3}$ 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 t:iqs6)g2km ksubmerged in water. What is thk6qgm ts) 2i:ke tension in the string? (The specific gravity of iron is 7.86.)

  If the density of golnx41)flgpp 7evb b.3 tq+sly+ d 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 steelw1qx ;fm;j 7ky 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 ygeb 9moac2)0immersed in water. Wc m9yabeg0o)2hat is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a 2xc 3nrma6is7y2 79-kfy-e u il0-g piece of copper (specific gravity = 8.9) is suspended from a threeyc mx92 -u7nkfy3 i76alrsi- ad and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum h40w3y3iw ps uwith 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 bar7 ;b6;mfji d0jmhbbdh9 t (2msely float in water.b;m2dm m b6h ;fbj 9(h7jti0sd What is its mass?

  A rectangular box of negligible mass meas.wkcdvy ce4o u) a9))kures 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 it yv)o ) u) 4ad9wcckke.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 :q9 9b)qplww x 54h2,veetjxy weight of the dispeqye: ,h)p9j4x 5b9vxwl 2qtwlaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the suecfs p k0+fihl. 9x7h*rface. What is the i.+ h p9sx07hckffel *object's density?

  A 200-N object floats with three-fourths of its volume btbph z9aj c 14 mlzx1:s/.zg1zeneath the surface of the water. What is the buoya/14j9msgla 1xh.zzb 1t:zpcz nt force on the object?

  A polar bear of mass 200 kg stands on an ice floe thc0s26hb l;f.ez(bc 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specifi0z ltec (fbsh;. bc2h6c gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows throughb irqbq f 1kz6t2n3a;3 a pipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diwjs3h1y(0x r zameter restrictiohyj3sx1 r w(0zn in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a-+jj hiow f,6qyg( *wd 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 sup2;u*bajd1 fc py1b q(sply a drinking fountain with 300 kPa, if the fountain i;*qacjp bbsu (21d1fy s 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bot blqib 6;qo 4/p6k6o5tvs l;tutom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out46s; b ki6po6qu/tvll;5qot b of the hole?

  Water flows through a horizonpp e ru/),r30q5g,p/ycd jhyutal 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. Hobi 1nh oqz)g)r ,/5gxues+jw:w 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 diameter? Assume the surq+hjz) r n/,5sguo :xb 1iew)gface 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 wj dpc.k+ sy3z opxav8a 8)eu79all of an artery decreased the radius by 10%. By how much would the pressure providapsju3pok8 v987e x)+cdy.az ed 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 twice thei 1re :l .w-w/adn3fse diameter of tube B. If water rises:rafd1s.iewl-3 e/wn 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How h6jbt3i3w (s/xsl,,bt cm*wm z igh will water rise in a capillary tube of diameter 1.2 mmsxiz3wc, ,j*b (stmlm/ btw63?

  232

  To what height would water at 0 degree Celsiu0e*xluarnq :o 1d f39ks rise in a glass capillary tube wi39x1dkq: 0lan*e ufro th a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pask1bti 94p*3+j rysk qn of water, and the water rises in the tube to 4.0 cm above the level of the pan. The surface tension ik3p9 jk sqsybr *t+14in 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 length 0.120 m and widq+ qf 93o, mqe7oo+bvnth 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 on the 0.600 me+q7o3o+of n b,qq m9v side?

  An adjustable rectangular frame has length xl, /zw9ha:ivyj73e a12 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 v3 xl9jae:wi a/7zh ,ycontained 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?