The three common phases ofbt:m cv scc54i b)(gph(;ryj, matter are

  Density is

  Substance A has a density:gb9kuze d7j;bjue 94 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 following is not a unit of pressuroi+8 -hlw+wgw3fdxn qesbc*b,5(-n ie?

  Consider three drinking glasses. All thrc,52 s3nco agb1l 2is3of:ytoee have the same area base, and all three are filled to the same dept so2ctc:3 bi1 f3yn,s2o 5lgoah 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 insidcr1zs7)ww06x cjc k- ye and outside a tire called?

  When atmospheric pressure changes, what happens tobqp(r6 wsnqy0 d/ul +3 the absolute pressure at the bottom od nw36l uqr 0(/y+bspqf a pool?

  You are originally 1.0 m beneath the surface o -v (6rd(yfx1ingbl.gf a pool. If you dive to 2.0 m beneath the surface, what happeb(.x f6 rngyidgv-l (1ns to the absolute pressure on you?

State Pascal's princ/ l:pu91 j8k.oojvsnhiple.

State Archimedes' prod8 )h oi5b 4p (6un7sn.aqvie*0mijiinciple.

  $50 \; cm^{3}$ 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 2/p;g9j moc t9razsu8 density, what happens to the buoyan2upom9aj/ gz8 s9;rtct force on it?

  Salt water has greater density than fresh water. A boat floa3idpjz4,7 ej6f o me+01 t -rktv*crhnts in both fresh water and in salt water. Where is the *+ op-v 16trnjchtmere4 i d j7zk3,0fbuoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both frest9t1xu98c zv j0a9xp 37xcqid 4gjd0 lh water and salt water. Compared to the fresh water, the volume o4i c c708x 3x 9p1jddgtxl9uz0a9vqtjf water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercuryn-/,:bfan bu vk0svm.. Where is the buoyant force on the ball grea -vvankfums0,bb/n: .ter?

  A 10-kg piece of aluminum sits at the b9iucy)le c 0j)ottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyant force on9iy)ej)c0 ul c it?

  A piece of iron rests on top of a piece of wood f*uqb qu7;zhpd / (anq4loating in a bathtub. If the iron is removed from the wood, what happens nhb pq*aquq(ud7/ ;4 zto the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top or14hj smt. zpv7p nlmy;(*5qu f the first piece, and does not touch the water. If the top piece is taken off and placed in the water, what happens to thu1(pt lyv n5s;mr.hp4m7q*zj e water level in the tub?

  Water flows through a pipet7ax:v)se sh 5d /jx:t :/dhz,+o mgzr. The diameter of the pipe at point B is larger than 5)z o:t7txdedm +s/sz:agxhj v:r,h/at point A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widewwe3 t ,tx5.omns to twice its original radius, what is tettw53w.o xm ,he flow speed in the wider section?

  An ideal fluid flows at 12 m/s-a m8ibh;khy : in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrowhih ykb;-m:a8 er section?

State Bernoulli's princip1k 3ug0t5i4uqzi u5 c3sjhii8le.

  Which one of the following is associated with tdy5 b0.g0v 4vl8p pdvehe law of conservation of energy in fluiy 4lv8dvpbd 0vge.p 50ds?

  As the speed of a moving fluid increas8,ec/:/ f1 1k6unn mrqi rsmljes, the pressure in the fluid

  Water flows through a pipe. The diame6rku/ (/mi pnlter of the pipe at point B is larger than at point A. Where is the water pressure/rkmin u(/pl6 greatest?

  When you blow some air above a paper strip, tsr)0p 8 x rmv;,pej5iymy l:4lhe paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force h /v6dfby7o 50kdvi9b of air resistance on him/bv0vbd k fh 57d9oi6y is

  Two Styrofoam balls, of radii R and 2R, are released simultaneouslyfdxxo3 :es *x1uh9 i0g from a tall tower. Which wi1si* 3 dfx0xgx9eo: uhll reach the ground first?

  When a small spherical rock of radius r falls through water, it expzsv 9 0dg) 17l9dxcduaeriences a drag forcez 7s1duadvxdg 9c9 )l0 $F=arv$, 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 throuo+1kwc q -. 8cu9id0yrqbyo8fgh a narrow pipe? That is, if you made a 10% change in each of the quantidq ikfyr1uc. 0w8cb9y8 q -+ooties below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has suux ;a:x6d.7t zg ozca zi-5-twice the diameter of pipe A. Water undergoes vu-6ou xaz:z;a xid s7-zt.gc5iscous 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 pipe B?

  Two horizontal pipes have the same diameter, but pipe Bs7ng7f e491rmd 943wrfdvhmn 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, what is the flow rate in pipe nhwdemmfnv97g9 1 r37f r4sd4A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to p29*k/ir9yw- tn:xqv y0ky j kbe associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", t-9kty /*9kyi:w vrjxk 2qpyn0his is readily explained in terms of

  When a tube of diameter d is placed in waterzc;sx11/(:2e oo b pnqboxuj*0+ qs yr, the water rises to a height h. If the qps:0yon+jsorxo z b b;2(x*/11cueq diameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are su/ poksvhqw)690fdzep m-k3 ,o+vsyz0fficiently 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, in all dimensions. That is, bug B is twice as long, twice as wide, etc. What is the weight osv koe/+d)0zhvfpo 6k93qp- zy m 0w,sf bug B?

  Certain insects, such ax 4m p0n +r**tagjc0( md+paml.tesf-s the water bug, 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, 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 maximum upward force on the feet of bug+p*mxl+ .em fgt0tanp4r *(asmj 0cd- B?

  A plastic block of dimension5vm: q8w us qs)ww*h9btt l6-ps 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its u 9q mt b vs*:)lw5pwhswqt68-density?

  A liquid has a specific gravity of 0.357.*on 2; uwrssdsyjye6+ -d/:ro What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00;ob 7,buva* w2o vqyd-,4gmeg cm. What is the maximum pressure it can exera,* -w dy2eugb g,mov;47o bqvt on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. cx35 kp.k ssqut4 73*ivc g6kw Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 1 huqrox h)d7b 9c*sbyay*.:d620.0 m inxqdu scdh*a :* o.9) rb67yybh the ocean?

  A circular window of 30 cm didkx/1na2/pp 2j uq t/9i q*kyuameter in a submarine can withstand a maximum force of x/ u/tqjpnp2q k/i91ku* 2dya $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure if th x7ciogddbzosd9 ;4q8w 9tgu*5( wf+ge absolute pressure is 300 kPa?

  What is the gauge pressurb 2 *zwnj+2wtleljz( 1e at a location 15.0 m below the surface of sea? (The density of seawater *j+1t wlelj bz z2w(n2is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface t /e9um iz::.eyn900gjghs w:c z5glhof sea? (The density of seawater is g .n ywuc0i:e9z/5mhhls0e: 9jz:tgg$1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The s0+q; purzwv0f8os9n fmall piston 8w;uzp 0fv+nf9ors0 qhas 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 radius of 5.0 q*mbyb -1 aua2cm and the large piston has a radius of 15 cm. What force myq 2*bmua -1baust 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 diameter hydraulic piston. W odq(l61cofx7hat force needs to be applied to a 5.0 cm diameter piston to accomp(f7o lqo 1dxc6lish this?

  The small piston of a hydraulic lift has a diameter 0n wk3x0jsk12 twvm/wof 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a loa0s 2twv 0kxwk/w nm31jd 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 buodauu0 emozv v.11.8gnyant force of the 1 zodve1 .0mu8n avu.gwater?

  An object has a volume oecdjw2xsq*o4rd 4 9u(f $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported;ts1jdt2.o5weuc 3.rui* jxw by a string while submerged in water. What is the tensionj;1 tx.jeuid3*sc5o 2.wwurt in the string? (The specific gravity of iron is 7.86.)

  If the density of gold isw2q6k )-ydjgn o )jd9r $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submao)k* ooc9 wcxp6++mmarine (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 ul96ppj4 fgq1u+wq 5x immersed in water. What is the specific gravi5p9w6lqpuug14jfx q + ty of the object?

  A container of water is placed on a scale, and the c3,/ tw ox/l lj,wzr*jscale reads 120 g. Now a 20-g piece of copper (specific gravity = 8lr/ cwxj*tow 3lj,, /z.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 and densic*i4 ).txfx0gs 2gbsv ty 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 di )s x4fd2qi1gm0o,vc xameter 2.0 cm will just barely float in water. What is itsg)f 2vds,x4q im0xc1 o mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.500lj h do04jx)h m hixl0hdjh0o4) jgh. 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 hal+7oqeoib 3fd- f its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weight of the objectioboe7d f -3+q?

  A solid object floats in water with three-fourths of its volume po 69ozpdu. xb75 0btfbeneath the surface. What is the object's densitp5d6p f o7xzu0ot.9 bby?

  A 200-N object floats with three-fourths of itzrbx1,-0hevv 4 ,o)xjq2 msk zs volume beneath the surface of the water. What is the buoyant force on the obz,sev xrjx02 zv 1ok4h)qm,-bject?

  A polar bear of mass 200 kg stands o u0o7ajd l9ufy-e -cs*n an ice floe 100 cm thick. What is the minimum area of the floe that will just support the *u9ysea-uc0-j7fd ol bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3etmr a s9j q./7ts00sj.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at;u8 t5 be4ok)k vtsm:j 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What ut5 t)4b:kj8om kves; is the velocity in this restriction?

  Water flows at 12 m/s x7vep 4k3-s yein a 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 tduu v8yrtb36+ ake for a pump to supply a drinking fountain with 300 kPa vr63 8tuu+ydb, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a wajzeq*a 63cpy jxdk8 ;4ter storage tank that holds water at a depth of 1 kj4a3z*e8jpc;yx 6qd5 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-secy1(7m ivazdhl0k vi)co-g w/ ,ty -d9dtional 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 lodf(q/-f+ry3lz c v8fk4a z i7t u,ywm0ng 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 surface of the oil is kept 6 cm abo0-f8 7wl/ymvu trz (fa ,q3fd4yc+kiz ve 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 onvfmk+mn2:hf ga7xg 4/en( h6y the wall of an artery decreased the radius by 10%. By hok hy fvmxf+ag/he( 6 mg7n42n:w much would the pressure provided 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 has8fvgjs -mlv39sy.rvl- i(6 dn twice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise in tube 9-d- 3js svi8yv(fmg6.n l lrvB?

  The surface tension of water is 0.073 N/m.kgu:ghfgxz6o . q* fub4t,p/. How high will water rise in a capillary tube of diameter 1.u.u:gztx6g k oh/*f .4qpf, gb2 mm?

  232

  To what height would water at 0 degree ryh )v+v),,r 2ccjivjCelsius rise in a glass capillary tube with a diamet,jyvchj iv2)+, )rrcv er of
0.50 mm?

  A narrow tube is pla -deid91ldxb) 6( grvjced vertically in a pan of water, and the water rises in the tube to 4.0 cm above the ledbd-9g i)xj l16dr(vevel 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 in the tube?

  Consider a rectangular frame of length 0.120 m and wir,mysq wy,zy a1e,**k) jlm o(dth 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 theo*z,y l( w ,q)k1mmy,ryj* esa soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 125a e6owvqlw3,ql d7 +n 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 required to move the adjustable long side so thato,d n 3l wwe756l+avqq the frame is 12 cm square?