The three common phases of marqcx-s .d5n; ytter are

  Density is

  Substance A has a density ofzqac4+x3t t )vq/nas; $3.0 \; g/cm^{3}$ 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 ai6lc/q ;v+se5epq4n r unit of pressure?

  Consider three drinking glasses. All three have the same area base, ank zol1a+pe6rysx0jb-c8:/ fike6 vv 8d 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 klo 6ei:j/-cs b ax y1e8+rf v68zvkp0has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and outside a tire calleduiu tbzjj vo6 2i4f4bk;(cj-n 7,o**ueqs-od ?

  When atmospheric pressure changes, what happens to th8, nbrr8n0fpgv g:ln gqo*u 5ev0 f)+he absolute pressure at the bottom of a poolrpfqu80o 5b0r+8e:* nhvv , gfgnnlg)?

  You are originally 1.0 m beneath the surface of a ysuw8. u ji u34pvb8ny)fhs* (pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on ynb4y83v.su()fjshi u p8uwy* ou?

State Pascal's principleo uxg. g5sh,xkx/ z,b-r4kyx0.

State Archimedes' principle.y8nrfot*8ut t.mk *4x

  $50 \; cm^{3}$ 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 cons 4ds64q3 nav gt-v8rsatant density, what happens to the bu3v44an ta-68r s qdgsvoyant force on it?

  Salt water has greater density than fresh water. A boat floatn5q *i/xxqyed8,s4 p uh oq39lhd3,u ls in both fresh water and in salt water. Where is the buoyant u,5x3le/p9q d4 3,h qx ounq8ids h*lyforce greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh water a bzu3-49qe t(ta c2aib-n-audnd salt water. Compared to the fresh w3ua9a-td- 2q ea4nzctu-b b(iater, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercu oalw w5;pk2+4.jdbw.c;o ogp ry. Where is the buoyant force on the ball 2pww dc5k b . +lj;.agw4opo;ogreater?

  A 10-kg piece of alumi1b.5l5f5ch itdk kka)6o;jvf num sits at the bottom of a lake, right next to a 10-kg piece oc5)ka k jdi5f6;lh tk.fvbo 51f lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood flo3e u xn2v6nqb5 w(zcvde9q(c5ating in a bathtub. If the iron is rx 2(qv 6qcc3w5nduzevn59e (bemoved from the wood, what happens to the water level in the tub?

  A piece of wood is fwbmje*o5+guz 7mh/a ( uj 3di5loating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch thwaj5u75 ou(i* / g+jbhmz de3me 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 cr*73 8pt seh:v(wmwh point B is larger than at point A. Where is the speed of the water greater:cwr v78hpwems3* t(h?

  An ideal fluid flowsnh tboq 7d(t0n7z b;d1wk:)wu at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the widebdtwnw(t:b0 knh q;u 7o)dz1 7r section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to hal:mds vt 35rea.m b1ol6f its original radius, what is the flow speed in the narrower sectr bt m lmsa5e1v:6d.3oion?

State Bernoulli's principleyyr9uowenrlqz )b+j83f9 d 96.

  Which one of the following is associated with the law of conservation of energy fx qa* +gyiqp cc53q:+in fluiac:*py 5 qxgiq3c+q+fds?

  As the speed of a moving fluid increases, the pressure isvqbr 7t;5 )kv5bunk/ n the fluid

  Water flows through a pipe. The diameter of the pipe at pt/i8i c l89xkboint B is larger than at point A. l9 xbi/itkc 88Where is the water pressure greatest?

  When you blow some air above a paper strip, the pape3 3gu7y m z 1cgit0zqk9sxe;o1r rises. This is because

  A sky diver falls through lhxp,ya3r1 s *pz(8 -jadu6a zthe air at terminal velocity. The force of air resist*l1 s(h zdrxjaa3p-apzy8 ,u6 ance on him is

  Two Styrofoam balls, of rad e4d,ly4j2f:tewr 6kc ii R and 2R, are released simultaneously from a tall tower. Which will reach the grounlyt4f:ew2dj,k cr4 e6d first?

  When a small spherical rock of radius r falls through water, it experiences a d)m,+sc-kc x lirag force -c)cksl im+x ,$F=arv$, 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 narrow pipe? :+sj0uydw y-e4-a ui ,ofh32ugikhv7t-wa :rThat io0g- uj iayu:k3,f2 v-4tausyhh7ir:w+ -e wds, if you made a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, d c- at*he m9wsvd4r1ye++2xbbut 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 dt14 e ravs-x+cehy*wm2 bd9+flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diawk4 42o gjc(-rdh9tc;ik/jh *qie 1a vmeter, but pipe B is twice as long 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,i 4 dei*tkak(j orc1jqv49 w/gh-;ch2 what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to be 7t8+a/j 1:v o(tyxv;r o+kpfhod:o xyassociated with oil spreadino+ vr op v od t8+a1hjt:ko/(:7yxxy;fg 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, the water rises t0 x,5, bpm8kpk6tr rybii* v54ol6ipvo a height h. If the diameter were half as greaxy4r,6p , 6kvi8mp bb5lirk o v*i0p5tt, how high would the water rise?

  Certain insects, such as2s3xwwzvx +ktf5 hq(4 the water bug, are sufficiently lightweight that they can run on top of water without breaking the surface tension. Wate hw t+24 vfx(wk5xqsz3r 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, ar y l4xdjhqlu**x75d2ge 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, 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 ax7 dhj*4llu*g qyx d25s 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 3.00 cm x 4.00 cm*bq9m; oyhzf/ has a mass of 30.0 g. What is i9fozqh;/y *mbts density?

  A liquid has a specific gravity of 0.357. What /(/x n/yk0baljqgb 3j(n ha;d is its density?

  A brick weighs 50.0 N, and measures 30.0 cm xzfrd:f2 px8 8p 10.0 cm x 4.00 cm. What is the maximum pressure it can zf 2ppxr88:fd exert on a horizontal surface?

  A person weighing 900 N is standing on s1c()jurkk/r:c+kg d s nowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine dbhn 0, e0lkdtfwt.v 0c8v5l/withstand at a depth of 120.0 m in vnd., lk 0/dbvwct 8tf 50hl0ethe ocean?

  A circular window of 30 ag6a h,g*kqoy0o8 :ekcm diameter in a submarine can withstand a maximum force of qyo 8ea:,o6 *ggk0ka h$5.20 \times 10^{5} \; N$. 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 kPa?6 *djm:gx4 zgj3gf8ii

  What is the gauge pressure at a location 15.r7p ):1f.anlbkth0 jp0 m below the surface of sea? (The density of seaw 1h)pl0p j7:ra.kfn btater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure a12styqjcl dg+,gjc)(t a location 15.0 m below the surface of sea? (The densijlqds+g 2ty )cg cj(1,ty of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The sorku3nqa2x(j 4td 8d,oj66g jmall piston has area a (2 ox6t6kdj3qdu8g ,nrj4jo$2.0 \; cm^{2}$. 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 rad:jk13f m.fe ivm2d) 8z8jldqdius of 5.0 cm and the large piston has a radius of 15 cm. What force must be d3z8lvd .1id:2k8f jm)q jemfapplied 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 v:w ,.if6h2y3 ,bakhzdhj vx3 by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston 63wik hvzjy v.2xdbhf a,h3,:to accomplish this?

  The small piston of a hydrauloeicj :3:x ez(ic lift has a diameter of 8.0 cm, and its large piston haee( j:zx i3:ocs 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 in water. What is the buoyant fc d6++ks/ts(wyatdx7 orce of th+/a( y6sds dxc+t 7ktwe water?

  An object has a volumern)j . dq3smze b,e 2;0pldf/g/zv4fs 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 submergedorlqdl503sf0 in water. What is the tension in the stri 3qrf500lodlsng? (The specific gravity of iron is 7.86.)

  If the density of gold inlqy)6: s:* dvlaz9iwz y/qt 7d/ og6ss $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel sdp98h:kat*w z ubmarine (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 id:4n :ecel 2cxn air and 6.86 N when it is immersed in watel2c:x :c 4ndeer. What is the specific gravity of the object?

  A container of water is placed(*p6vtw 84w *xshh fcq 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 lowered into the w qhxc 864*(t pfvswh*water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1ti9pq8pf lta*nmbn o0 6;z50h.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 bare1)7o8fs vxvngxa - xr:ly float in water. What is its 7x)1axrxno8fvv s- : gmass?

  A rectangular box of neglx*i7)lls2 wy -2lb rzdigible mass measures 5.0 m long, 1.0 m wide, and 0.50 m higb xyzsrli2-l d*w) 27lh. How many kilograms 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 volum/r,nhhz sl d/08r be8ve beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weigh v/nld,bs r8ehr08h z/t of the object?

  A solid object floats in water with three-fo isk:yvl lh6d8hm(771 oc bc +s96hz:ed,ampk urths of its volume beneath the surfad:1me cm8z,bai :9dyv6o 7pchshk(7+6l hlk sce. What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surface of th+ z sug:t1okj ./vc93x2 nsipee wate/kzxcp:93. sj2 t1i+ovsuengr. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an i+wh ym3u2(cst ce floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specifiuy 3 +wmhs2c(tc gravity of ice is 0.98.

  Liquid flows through 2.rfs;fs jzm9u, m8bza pipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cc(di k2dkj*8qm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in thedd(i jkqc2*8k line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wic 6*lkosp)f w6th 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 takauvkh(yz* q o5 9y5wto:/ma,me for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the pumy a/ktu9 wv 5mzq :myo5,*oh(ap?

  A hole of radius 1.0 mm occurs in the bottom 8 q) w(c1xbrfekp)1lxvm +b *sof a water storage tank that holds water at a depth of 15 m. At what rate wilkvs)8 ( 1p1be+lmwqc)rfxbx *l water flow out of the hole?

  Water flows through a horizontal pipe of cr4vjn/w/av sz7 3xvmtdk+t21m- oi8k0qrza r /oss-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 take to pour 4.0tn p3q;w*i6 du.c3jyv L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume the surface of the oil j3*nw3q yp u.c6idv;t 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 jr9g.x:(lcr,lcb/f(cj* n z w tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart h/,nxr. (fjwgc :cl* zbl(c9jrave to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A hg1t yah0wl ) ghu())ahas twice the diameter of tube B. If water rises 24 cm in u))hhhw )lt1g a gy0(atube A, how high will it rise in tube B?

  The surface tension 2 5ptoes0hwqa 156xqtw (mls 3of water is 0.073 N/m. How high will water rise in a capillary qsl5 s520ott q(aw x63h1emwptube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tube wi1o1p 29 mkm d6y-u lmoe(m*lmpto(oull6p1p *mekm-m y29d 1m mh a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of waznqpmj. ,f3z5 lo 6ksp p3-x5dter, 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 addition of some soap. What happens to the height of the liquid column,d. zp5qj3mpzox-p 3 skn5l6f in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a soapf. 6h6ugv 9pvn film formed within its confined area. If9vgn6 . pu6vfh the surface tension of soapy water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 1 bqn ry +e*/m0l7 v/xloled:u/2 cm and width 5 cm, and is built in su* 0bdy/rl+q/u7l:mvl/ n exe och 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 required to move the adjustable long side so that the frame is 12 cm square?