The three common phasesggu54.vznt jt.0xx1 p of matter are

  Density is

  Substance A has a density o* o,dqjh ffk8s7:7nw33 kzsuof $3.0 \; g/cm^{3}$ 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 4 sb.b1q55mw8,g6 hukjwq wwqpressure?

  Consider three drinking glasses. All three*lup+1ip7 mvc)wwu. j have the same area base, and all three are filled to thep.w1lvjp+wu i) 7cmu * 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 liquid pressure at the bottom?

  What is the difference between the pressures inside and outside a tire cg;2 let0 z)tsc/ d8ls y,z3dc-r+rwfualled?

  When atmospheric pressure changes, what happens to the absoluupv +9g oxu k.7gaz 9ur l:y+g3uice3*te pressure at the botucxp e*gu lvru g9o3+gaizk9+3u .y:7tom of a pool?

  You are originally 1.0 m beneath the surface of a pool. 8wt4dj eykhcfr*- 52 6iz4bvfIf you dive to 2.0 m beneath the surface, what happens4h54rd6f2fzj 8ic-vbet*yk w to the absolute pressure on you?

State Pascal's principle.g;4la3ntwh 3q

State Archimedes' principlg:i22 we.u tdkx:sk5b7x zap2e.

  $50 \; cm^{3}$ 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, w*2)kjc+ m- mq86jwel luryz8yhat happens tour-mlly6m y)8z q8+wjc*2jke the buoyant force on it?

  Salt water has greatejysd* )/ yq6mof5e bl7r density than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant for67se *dom yfjb5q)/y lce greater on the boat?

  Salt water is more dense than fresh wate ))jklznqi/3-b d)adss mx)qw-rw ;0xr. A ship floats in both fresh water and salt water. Compared to the fresjk d0 ))b)/nqx-ali-rw sqwx )3zd s;mh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of m pld;d- y:kug+ercury. Where is the buoyant force on the bgd:-k;+ pduylall greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg pibck w5mf(3)pnj 0+ ipaece of lead. Which has the greater buoyannpp5 mb a)ijc 0f+kw(3t force on it?

  A piece of iron rests on top of ,z4qto2g fbw. a piece of wood floating in a bathtub. If the iron is removed from the tgqbw.2o , zf4wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. Aamwyrk5; )bt+ 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 water, what happensktba m);+5wry to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point:qqne 0n67y)znen 6gk B is larger than an y:e 6nz0 qngqe6k)7nt point A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipewj+j1ucom*h/meb rxcp5uzv*xe 9 b w*6y3:h0 . If the pipe widens to twice its original radius, what is the flow xwh juz30c:uv16yb+w*j*opexmc /h* 95m ebr speed in the wider section?

  An ideal fluid flows yae76cina6zf1p7cp( 5t;wj m at 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower sectio i651zfa7wymcapc 76e(pj n t;n?

State Bernoulli's priy6l lyzgo89t 5/bn8yxw q;pb/nciple.

  Which one of the following is associated with the law of conservationb5lya x(tqyun(l27 /m of energy in (5yll/t7 (uay m2 nqxbfluids?

  As the speed of a moving fluid increases, the pressure in( ep5 jj/qy, du,pgjhy l8zxirm2l i+9x;x,o1 the fluid

  Water flows through a pipr*m2d;gvn.kb56 t kg fe. The diameter of the pipe at point B is larger than at point A. Where is t.*;v 5fgbkgk6tnd mr2he water pressure greatest?

  When you blow some air above a paper strip, the paper risesk()ilvg +k788 sgdnnr. This is because

  A sky diver falls through m +aod40 q27 t.kobeyrthe air at terminal velocity. The force of air resisto b2e40 kqmdt.aro7y+ance on him is

  Two Styrofoam balls, of radii R and 2R, are relee wnr ht- lhly,l23(77c h(btpased simultaneously from a tall tower. Which will reach the grou e -,72t tlhpc(nwb73hyl lrh(nd first?

  When a small spherical rock of radius r falls through water,shd e8ssz(/-ec -gdo7 it experiences a drag d8-(z/-g7hosc eed ss 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 narrs5uk o- vc52hmow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greate5sho5 -um 2cvkst change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has t +2fa*b 0wj )rdtevf5kwice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to w) rtebdv20k+fa fj *5the 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 have the same diameter, but pipe B it hh*+c igc6d /fu+70 .itjanns twice as long as pipe A. Water undergoes viscous flow in /6 *+0t7fcai.cngh t+ idujnh 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" tasteri d1* +f-wi,lwu:ygk66o wev seems to be associated with oil spreading out all over the surface of the soup, instead of staying*iwkweiw,6dy-1l uv: 6fo gr + 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 rises to a height h. lubhr ;q; qi1yzxr6 7 )2lcjm7If the diameter were x2)6;jmbl7;cr1 yq zl u7qihrhalf as great, how high would the water rise?

  Certain insects, such asfzeo8/ltq /y1p /meq * the water bug, are sufficiently lightweight that they can run on top of water without breaking the so8 f*eqe/q /p1t/lmzy urface 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 sufpo3gy a.s, uyb/u2yc8wy /p 9dficiently 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 a ys y. db2g8,//cp9wou3yyup 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 3.c96v 2,zzkee w5 +qaozi:pw s:00 cm x 4.00 cm has a mass of 30.0 g. What is i es,owzz:k+5wa :v62epq9cizts density?

  A liquid has a specifirmit: mg.0,pfr z7g +zc gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measurest r,tznh (5m.v 6nd;cg 30.0 cm x 10.0 cm x 4.00 cm. What is the maxim zcvmtht dg,nn6;( .r5um pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowsho:wt sk rs29ms,wyku+ he :o0h*es. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a subm,w q hm d-ev4qvmb6w.7arine withstand at a depth of 120.0 m in thq7-4wdmq v,m.bew6 hve ocean?

  A circular window of 30 cm diameter in a submhg8(qi5;wd. 7j ogguoarine can withstand a maximum force ohq 7(i5u;wdo.j g8g ogf $5.20 \times 10^{5} \; N$. 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 pre( qb:tp9q(0ay j9p9 vkf gb-l.xo4k yessure is 300 kPa?

  What is the gauge pressure n-tcp.vl*ez * at a location 15.0 m below the surface of sea? (The density of seawate envzp*- c.l*tr 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?ub .iog2kbr r e.pp 07ym4r78x (The density of seawater is .8p.pyk7r 7 e xir20obg ubr4m$1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small piwmc (;2tr rj8+ukkux;. .fo ffston has a2 .tmfc(ku;f orf.+x u k8rj;wrea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage) m)unb uuzxv4. x +fp*ukn8x9./lrg p lift, 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 car z)8n4 9gu.u+*bfuxmvx p ) lk n./rupxweighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted bkxwn4 8)z5 njqqpm- u:y a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 c4n8)xm5jw: -kqnp uqzm diameter piston to accomplish this?

  The small piston of a hydraulicacct5fo kyp 9gm2 7/-e k/cq.w lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a loaw95/kf.gktc/q c-pa2 7ymoce d 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. Whz;( mnw0q(niq 9/ wzcqat is the buoyant force of the water0 mzn(wiq wq z(;q/cn9?

  An object has a volume .w7p uhl ug2fswvb(2,w7rzbop16 s6u jgk 7 2lof $4.0 \; m^{3}$ 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 submerged i ditvm9uh .dzcx7.x.v9) vh23 ams:gya3 bf8dn water. What is the tension in the svs:mhacmu3 g9v .78b.2)v.dfatxdh i y dx3z 9tring? (The specific gravity of iron is 7.86.)

  If the density of gold isg;a 9gw/k4l2 p+ fipen $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density ,ckq --n,on2gas4zzd)3cto h sdl 4n7= $7.8 \times 10^3 \; kg/m^{3}$) 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 immm)z-uv ys7 4kypdk 54+h8pwhmersed in water. What is the specih5hywpy-pk z8dm44 km)v+s u7fic gravity of the object?

  A container of water is placed on a s1 awh92e;bs 15zeatfu3s2 p ppcale, and the scale reads 120 g. Now a 20-g piece of copper (specific gra pp5tua22 s sfaep31bwez;91hvity = 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 mass of 1.0 kg rw5ma3l10 wth 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 jv1o0)y1 o;sq)k8xk axind, w 2.0 cm will just barely float in water. What is its mai )n;,dxx vowj1oy8 kak s)0q1ss?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, 4q:qsrv4b anqg)u6 a* and 0.50 m high. How many kau*r )4n6qvsg:4qqb ailograms 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 wate; e/ bb s: 6ywrvw0nl8b+ey4dgr. The weight of thbvy/wnr:bdye4e80+ b;slg w6e displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourth kavwc,(rn2vv*m 8:qv s of its volume beneath the surface. What is the o8(avc *v,qv wvr:nk m2bject's density?

  A 200-N object floats with thref( ws7;hvd3 pdob twh*h:ry 9;e-fourths of its volume beneath the surface of the water. ; dh*vofhr: tpsdw h7y;3w(b9What is the buoyant force on the object?

  A polar bear of mass 200 kg standscgtk y)rwury 3a 4-*6k on an ice floe 100 cm thick. What is the minimum area of the floe 3)gcatw kr4rkuy-* y6that 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 the flowd .d 48 t taxu)k1oot0xr9y9fr rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m mq7)1ivag7x +* ywucp/jyw( m/s. There is a 2.0 cm diameter restriction in the line. What iscwpm1/ jgwya yu7qx vm7+i*)( the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe witwm+ saa2*k+g m mi-ujmccw;7) h 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 wit)c 3v,yws :crv-w8i nsh 300 kPa, if the fouv-rcscin),ww 3v8y s:ntain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of kaf 2y40vwyg*a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of thgfy va4 w0yk2*e hole?

  Water flows through a horizontal pipe mh* bz0zoe7/ic61m g:giwm 7h26wj qm 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. How long would it takehrc- tx.ps q14a4um5x68zscf to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm qxcch 8-msru46x4p 5. ftsza1 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 tisst:0*t a3 ,kxl*wi pd a60 rldqzig8x3ag2gc.nue on the wall of an artery decreased the radius by ia8awzn.act,d: xlil0q*x3 p3g2 rg* 6 t0kdg10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are u64ikr2 tp)y zw x uh1aaf.0p.placed in a pan of water. Tube A has twice the diameter of tube B4fu2i.ht0pak ux)r.1wya 6z p. If water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water ixs)q;f6x hk2n s 0.073 N/m. How high will water rise in a capillary tube qx6nxs2 h;)kfof diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass ca8j zku3*um/gtxbj7lp9z ;s,k pillary tube with a d;3z/*tlbj7k uk9s8z m jupx,giameter of
0.50 mm?

  A narrow tube is placed verticbsa 5 f5g zhtqo5i/v)fup*+0dally 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 additiogfqs5u0* p oitdf b )a+5v/hz5n of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame oa(my 7i)n*hsg f 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 muchgyhn as *mi)7( force does the soap film exert on the 0.600 m side?

  An adjustable rectang-yc cx n;8*nx a2q+fdfular 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 contained in the frame. Soapy water has surface tension 0.026 N/m. How much work is requfc*an x8c-nd+ xfq2y ;ired to move the adjustable long side so that the frame is 12 cm square?