The three common phases of matt. kjw*-p7vbkpt ;db5;r u)osoer are

  Density is

  Substance A has a density of c ssx1pn/ny hh c)22)5weqb5 u$3.0 \; g/cm^{3}$ 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 pressfuf-qt)1j . slure?

  Consider three drinking glasses. All three have the same area base, and all thzb cd1 g7z ii*(rp.nu+ree are filled to the same depth with water. Glass A is cylindrical. Glass B is wider a*+1 b7zgi(iun. dz crpt 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 betweengaph22 kn*4ps the pressures inside and outside a tire called?

  When atmospheric pressure changes, vn +.sy1v :2xz7f fvtwwhat happens to the absolute pressure at the bottf:ft.ynz2x+ wvv17v som of a pool?

  You are originally 1.0 m beneath the surface of a pool. If yofnuteyc;s6n fpy0:3 3ay)px2 u dive to 2.0 m beneath the surface, what happens to the absolute pressnyyxufp:ynac ; 2e)36 sf3pt 0ure on you?

State Pascal's principle.7uyt5(t, abpw pch dit ix4um(c d5)39

State Archimedes' principle. -q-u aqmyxh*u w18.pe

  $50 \; cm^{3}$ 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 conf 8d u/lt2o,/* /f.xj.wlsin8 o nwmxwstant density, what happens to the buoyant force on it?jn //um/8tlwo.s. nf 28 xw,lxof dwi*

  Salt water has greater denjq0 m3xd5vy. asity than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force grexjd0 y35.vqm aater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh 36gti m9lt v1lyb8hf2water and salt water. Compared to the fresh water, the volume of water displaced in the salt3bgfi29th m llvy86t1 water is

  A steel ball sinks in water but floats in a pool of mercury. Where if;4ozyayiuhr 6d):e7 zjg ql;. 8u(mgs the buoyant forc h7g8ym.a;)zi6qo4 u ;fzlrgdue( y :je on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, rig.u3 n+bzrm9p wht next to a 10-kg piecerbw9nm.z+u p3 of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. * 2, yijciple(f1uf: 6my htm6If the iron is removim1 ympehiy2 :c l 6*6(u,jffted from the wood, what happens to the water level in the tub?

  A piece of wood is float8ml9gwz6h:aki yv(c5 ing in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the to:wglk65cmi vh(8y z9ap piece is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. T99ewi reje;b (ivq2a.he diameter of the pipe at point B is larger than at point A. W9i.qw;b e9je (2v rieahere is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens a, vx icia 9nktdh)x:fb3j3)0 to twice its originajb)3: dt ,vac39fi 0a)khxinx l radius, what is the flow speed in the wider section?

  An ideal fluid flows at 9 bevrmn- v8-ae1w7mp12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the pa8 -rew- bvm7nme v91narrower section?

State Bernoulli's prin5w*z,h0 rgaomr sgc 8 3,gl*ibciple.

  Which one of the following is associated with the law (q4k fl0zz0c tof conservation of energy in flui4z(fc ltzq 00kds?

  As the speed of a moving fluid increases, tb4;v5zz,c wh lj 4x1fnhe pressure in the fluid

  Water flows through a pipwj*x r0tat:rcw(/u ( zr fl,fvznt/+ 1e. The diameter of the pipe at point B is larger than at point A. Where is the water pxa :1+ruw(vfr ( tzwfjc /nlztt*,/0r ressure greatest?

  When you blow some air above a paper strip, the paper rises. This is b60obhgrvrbmn zb2y- /4 ,rmj,/lx5d iecause

  A sky diver falls through the air at terminal *pj u5 /cwm9ttjsz) u2kgt3r2 lnm02jvelocity. The force of air resistan292t5g/p2lkt) rzu j n03*mjtwuscmjce on him is

  Two Styrofoam balls, of radii/gxho ,urulbnqg- /*xsi 65j1 R and 2R, are released simultaneously from a tall tower. -s/b h* rj/,oxuguxn6 1l5ig qWhich will reach the ground first?

  When a small spherical rock of radius r falls through water, it experiences a /ei3prf43j4 jjd:smx th9s u7drag force hs34i p fujj3sxt /dj:7me4 9r$F=arv$, 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 narrw bqn1*2k*xn qow pipe? That is, if you made a 1k w2q n**1bxqn0% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice thejt )-m0fr 8ii slil*wocu*y8w,w*1b r diameter of pipe A. Water undergoes viscoj*f ,o)llr*w80m81-ri*ct wbwysiuius 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, ka 7oey74igq/but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acrosse7k7qa4ogy i/ 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" taste seems to be )y y87d4x cvpzmmbj07associated with oil spreading out all over the surface of the soup, instead of staying in li 0vdpm bcxy74z 8m)j7yttle globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises tsx uy py8*q-7vfxb )1ro a height h. If the diameter were half a8s f yq*7yxbru- )p1xvs great, how high would the water rise?

  Certain insects, such as the water bug, are sufficienwc84)f n ahvx4/l c-/thdbg ; bjreb;;tly 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 of bug Bj8crbl;ba); wc4nh-/x ;ed4 hf gb vt/?

  Certain insects, such as the waty vem4; a)mv75 arh2b5zro,pmer 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 )eam45ayovhrr , m25vzmbp7 ;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 3.0y cg j8.fuxtp+ 6b8kv*0 cm x 4.00 cm has a mass of 30.0 g. What is *fukt8bgcyx.pj6 8+v its density?

  A liquid has a specific gravity of 0.357. What is its d 1f3 r.0gq0pr qva azrk/5u cs.g8vx+zensity?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.0shic +0)hv.esf-7 sdr1ea, eb0 cm. What is the maximum pressure it can exert on a horizontal surfacbshea).710v +ec deishr -f,se?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has area jnxwza-jf:n- e ew6(k5sp;.j) oj1x r 3h6n fk$2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a s4fzt ba1/)7 e twcbkyn,s+ xz+ubmarine withstand at a depth of 120.0 m in the ecn/tw y)zfs+,k +7b 14 zabtxocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum forc74gv+-5* gbdz-kqbd ourrws /e ofdbr7gwz-b -+ 4g/ oq5s vkur*d $5.20 \times 10^{5} \; N$. 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 absoluth-(9evhvof 8,dujm.+p2t1 zepu:g8*f fzzoje pressure is 300 kPa?

  What is the gauge pressure h1lk1td60 l +p,h4u(grp(gbq8d tjy g at a location 15.0 m below the surface of sea? (The density of 1l0 jh uggl p6tk(81,(dgdqrp4 t+bhyseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface ez x58x6,)8 blojyazfof sea? (The densitlze,za)jb 65y8x8fox y 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 small e4i2 db /cewe5piston has ar/icb ew2e 4e5dea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, 4uvcs8mz omtfm b 8;7q1 gk+ ysp7.o.othe 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 mvmk4s1o o c.8g8m.u7py;tqsz+fo b 7 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. t :18vyab:x;lmrbn t- What force nev x1mr;a: ynbl:b-t t8eds to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulicc 7b, *yrhf8*v ttbq0c lift has a diameter of 8.0 cm, and its large pisqchrbf*t ytv*8 b,7 0cton 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 in water. What is 8lo 1cmj bf8g.the buoyant force of the .1 8 ocb8jflmgwater?

  An object has a volumep3py2 neq87px 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 p uu q:xl.k+j1z/ fwf)7lk- mzstring while submerged in water. What is the tension in the string? (The specific gravity of iron is 7+w7lm-pj x.kfq)z1f/: luku z .86.)

  If the density of gold ist8h if8u3qoq sc-n,7f $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submn9cdy x4 k9md.arine (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 o+jh8..xh5u 7cv:d.p un3xuvej c8dm it is immersed in water. What is thc uj.h cuh xpud:em3jvvn d858+.o .7xe specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now ptcrw,na-,:xb k 9 )iia 20-g piece of wrni-p: ,xta,bck i9)copper (specific gravity = 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 and wcs3u5 fn a*( mp)wdwz6wde. f,-mv 7jshr8w;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 cz3 szwsll2/jv9xvan84(c yp;m will just barely float in water. What xl 3w yjc2/ap(48;nlz ss9 zvvis its mass?

  A rectangular box of negligible mass m9 7v6 uk0phruweasures 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 siuhrpv7wk 96 0unks 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 h l*e 2fbcwa7.yalf its volume beneath the surface of the water. The weight of the displaced a.web 27yfcl*water is 2000 N. What is the weight of the object?

  A solid object float6 9taqrfv0 4)2vmgmm+r;8ul1ljmw qos in water with three-fourths of its volume beneath the surface. What is the obqm1ur)vavl o6mm84 wl+0;m9rf jtg2 q ject's density?

  A 200-N object floats with three-fourths of i8 z eu-(d.8u vw)z.np bn(or1qt0red vts volume beneath the surface of the water. What is the buoya8zrdu( pven .b.d (qt1ru )-0enwv8 zont force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is thez9zj t kk. puj3q/0c.x minimum area of the floe that will jup 3zt9u 0jkz/jxk.c.qst 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 1dn mkr )fng,(*6 qudecm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameterjdhuaqhrj2; n)62-g w pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in thehj2wdna- ruhg) j2 6q; line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizonru ow+ud2j8o1;3tosn / 6kdza tal 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 supply)rs.9ss7 9gjumc(zs y a drinking fountain with 300 kPa, if the fountain sug) c syjr9m(.9z7ssis 30.0 m above the pump?

  A hole of radius 1.0 mm occz29/yhaqa/5 lrisfim wp 87-curs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of the hole?m/s q-a9 ayw5zlci 8h prf7i2/

  Water flows through a horizontal pipe of cross-sectional at-jd,*yccq:c rea $10.0 \; cm^{2}$ 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 t:( a t34:xbql7/k nm .pi(he v1vdogoto pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diame/d g(n . voalit7:k:3xvo bhm(etqp 41ter? 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 the59fn oy;ji ,0gh:cv 10zlfy rw wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increasew 1 :n5r0 ,0gyzff;cyoivh9 ljd to maintain a constant blood flow?

  Two narrow tubes are placed in a pan o-pp g.o gz 6 enj*5-nm-k1kqmrg ly+,af water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how highk.jpn5g-ek 6oq-l mp -,ynr*1 gm+gza will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will watb y /9ulc,dc+ter rise in a capillary tube of diameter 1.2 mcb/ cd+9tuy,lm?

  232

  To what height would water at 0 degree Celsius rise in a glass c bojh8m )+s*w)o:d lacapillary tube with 8:)h)so*abmcjwd +ol a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rishjky6/ s n7i4tes 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 t7j y 6k/hs4nithe addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of llp2itwuu* 696wp j pr8ength 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface twu*8j pltp6ip9wru26 ension 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 12 cm and width 5 cm, and nodwi q,14oa-is built in such a way that one of the longer sides can be moved wit,d1aonio 4w -qhout 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?