The three common phases of matter ai )20n vg.pswazy.kqoxm; 6g:k)u 0v fre

  Density is

  Substance A has a density ofy;960u*eivr f cv5)pk -uryqa fkpb74 $3.0 \; g/cm^{3}$ 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 e;zl+5 t.j uwhw8d1kz cm-i.eunit of pressure?

  Consider three drinking glasses. All three ha8u-7)p1t cfsw*,uv /lrctnsz3 ia c2dve 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 )u*s ap7c rtslt,wcv d2 i8 zc31-/fnunarrower 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 be*q 9so)dox; eqtween the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the ab q)bgqv *n8g)wsolute pressure at the bottom of a qg*8)gnbwq) v pool?

  You are originally 1.0 m beneath the surface of a pool. Isf-9yrze5m6 xf you dive to 2.0 m beneath the surface, what happens to the absolute pressure on yous-x 6efmz r9y5?

State Pascal's princ(h(/yc + uujg jciuq*9iple.

State Archimedes' principog ;fgr b,ce. xcb.0b2le.

  $50 \; cm^{3}$ 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 di,3tc lacl hjfd+s9*: ensity, what happens to the buoij f dclta:,s9+3hc*lyant force on it?

  Salt water has greater density than fre2tblrlk(emz /.w6om80 9l bwesh water. A boat floats in both fresh water and in salt water. Where is e.lmw b9lm/b(e8t z 6lr 02wokthe buoyant force greater on the boat?

  Salt water is more dense than fresh water.am/* -x1;h .yv6ao9y gzeazak A ship floats in both fresh water and saly1 he6k 9za/ .yagaa-*mv;ox zt water. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in wd4dvl o98xtr4 a1vd 7later but floats in a pool of mercury. Where is the buoyant force on the ball grl 74at4od9 v dd8vrx1leater?

  A 10-kg piece of aluminumj*vi.d9-n9 pugvr ge- sits at the bottom of a lake, right next to a 10-kg piece g99.u-dvvrn j- p ieg*of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood 8p;tsb-p q6mc8dwzj( floating in a bathtub. If the ir6;mpswpjzb(q-t8 dc8 on is removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A sqw9;4uh y37dq e z-eajecond piece of wood sits on top of the first piece, and does not touch the water. If we ej;hqdz 7u-aq3y 94the 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 pid.ajax+nma i8z4vm 5)pe at point B is larger than ada a8)+aijm4v.x 5zm nt point A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the p czi(:;xdruyg xke9wic0,m ); ipe widens to twice its original radius, what is the flow speed;r (xz i9yu,w;ke:)mix cg 0cd in the wider section?

  An ideal fluid flows at 12 m/s in a horiz yc r(jp7x7/,fo op+ynontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narr 7yp+of o c,7(nrxj/ypower section?

State Bernoulli's prin03fgq 0 o aypr/4obb9dciple.

  Which one of the following is associated with the law of cvc9 czd.m(lz(0a el m-onservation of energy in fluzma.9(0vlcm dz e c(-lids?

  As the speed of a moving fluid increases, the pressure in / trpds/-j9.vu w:va othe fluid

  Water flows through a pipe. The diameter of the pipe at point B is lar 0*ec,pgfwdp 2ger than at point A. Where is the water pressure cfpgw,0ep2 *dgreatest?

  When you blow some air above a pap. 46m 8nmwmax tq/mth- (o1r f6mv+wr,fv.rseer strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of air res3oqnbbt* . gks rxam39s9k-oix c/54yistrsgm qxoixko t3y594a s/c.b39k *-nbance on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneousl zh6;siu8u pc(+y*e *(yfitt hy from a tall tower. Which will reach (y*tf uzc*yp8st i(u;h h+ 6iethe ground first?

  When a small spherical ro +9 9d6-hwq pbtex5iwlck of radius r falls through water, it experiences a drag f x -iqwl hd6p5t+99wbeorce $F=arv$, 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 94tr 2gwev;z)tfo / yc 0,thgznarrow pipe? That is, if you made a 10% change in each of the quantitierfoz2 , ;wt)t/0hgct4zy e g9vs below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe Bkq2g 42ydl 6qaw 7ce6l has twice the diameter of pipe A. Water under7 24 dyqqekcl6awg 2l6goes 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 pipe B?

  Two horizontal pipes have the same diameteranjirbb gf 56 meu4(,t 7wm8*e, 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 eiju4a* brnw f(b,8gt5mm6 7 ein pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems tot+s) kx i35-jo/anli l be associ5oi n)xkl+jl a s3-it/ated with oil spreading 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 64 2w ms4ieldjis placed in water, the water rises to a height h. If the diameter were half aldm426eisw 4j s great, how high would the water rise?

  Certain insects, such as the h22f oju1+pyfwater bug, are sufficiently lightweight that they can run on top of water without breaking the sup 1f 2h+uyof2jrface 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 sufficis57p 9hm /fpqa 4dxl-sently 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 ilxfs4p-p5 dhsm/7a9qs 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 dimenv(vhskk43 5; xa0ojmw sions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is itsj3 a5h;sov wkv(k0xm4 density?

  A liquid has a specific gravig8af3bnzr9u c:sd u y c-n 1:k 1sfo881b)cmkwty of 0.357. What is its density?

  A brick weighs 50.0 N, and measure b6bsh)wt3v6zdm5a. d s 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert wh)6db6b3zmv5dtsa. on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Eachv3udk3br41z l:g psr/ rxj13l)ij6qs snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at ao4yq nl u.u70m,l7 nefm2fu9e depth of 120.0 m in th 7lyue2 nm 04qou e.fm9lf,7nue ocean?

  A circular window of 30 cm diameteal iwesp /uu/0 y :+da*.vhv,er in a submarine can withstand a maximum force e.wl y/ s*e+v/a0 :hupiv,aduof $5.20 \times 10^{5} \; N$. 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 abs at)lpn *.8/:3gpp ,l zrxlmqfolute pressure is 300 kPa?

  What is the gauge pressure at a location )e7brq ;f5*6za od+yg-sy eoqbv*d ;m15.0 m below the surface of sea? (The dmfov-gao+ srd;q7z5e b **q 6y dy)eb;ensity of seawater 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? (wt5 :p.+smk8rf *b yxlu)) dsaThe density t)l+5x f8 p)*.s :r aswdkuybmof seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic mach9fu8vr6 6+cjdhiy6v oine. The small piston has6hyidu v9+6ofr8 vc6j 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 m0+m(8oh ghu* efu6 01degilolift, 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 weighing 20,000 Nh* 8o+ug eiu6f0gohme ldm0 (1 on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic pi+n*i vd9ft w o:v)s.xxston. What force needs nxswx9 +vvf *).ot: dito be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydr8,x p if*ni.x(7mrgdlaulic lift has a diameter of 8.0 cm, and its large piston has a diamet(. ri mx*g8 ilpxd,7nfer 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 rdsoky -6q(bwqi8.m;30 N in water. What is the buoyant force ofw6 8sqd-(kqbm ; .yroi the water?

  An object has a voluqn mxq*pl6d9-qz)2zkme 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 submerged in w.a5wl, -jx hunater. What is the tension in the string? (T l un,-xw5ajh.he specific gravity of iron is 7.86.)

  If the density of goldr4 6slb+kprkm 5i;k2nbb- 3im 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 steel submarine (densittz9u- p *qfbow,gr g(9a :1omgy = $7.8 \times 10^3 \; kg/m^{3}$) 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 immersed in wate-)yc,(erki .b l2tld+zk z/yu r. What is the specific gravity of the yk2 te(+-/,cdbu)k.z yllzri object?

  A container of water is placed on a 49:ydf 6dzcwe scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) i6w4zc9 f ed:dys 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 density of kjagkc0. n0wczx :9+; vj/yug$2700 \; kg/m^{3}$ 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 cmbz:7l u)gdjwtv-f -f-p6wc(e and diameter 2.0 cm will just barely float in water. What is its ma-lwjb-uvtfg -p):7cwef6 dz(ss?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide gzrmcl :qzauc3a o j1bpk78k ;po:5;(, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks qukr 5mg:c(l83;caz o7z:pp aok;1bj 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 :y2zxav u;dn, . 3lalfits volume beneath the surface of the water. The weigh y2nxz3dl f u:v,;.laat of the displaced water is 2000 N. What is the weight of the object?

  A solid object floatd+bmr vq7jw 6,s in water with three-fourths of its volume beneath the surface. What is the object's de bm+vqr6w7j,dnsity?

  A 200-N object floats with thrk) kpoc0c5m98;- i. jcrmmadjee-fourths of its volume beneath the surface of the water. What is the buoyant force on the oc05cm p)o9;kj- ar.k mj mdci8bject?

  A polar bear of mass 200 kg stands on an ice floe 100s /zo :)n8orsq cm thick. What is the minimum area of the floe that will just suno/: s soqz8r)pport 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 flow ct7 9;l i9b7uktoi th.rate.

  Liquid flows throughj .4vsvll.vh 2 a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this restrictiosv 4v.lhjv.2 ln?

  Water flows at 12 m/s in a 8*t1qoja v;n 00b d:g)gijluu 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 5qy5/qg yyjc::dcfm 3 pump to supply a drinking fountain with 300 kPa, if th :y53dqy5 cmyjg:f/qce fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs inoc.r w fs0n7i(whw((j the bottom of a water storage tank that holds water at a depth of 15 m. s0wr 7 (hij wfo.(nc(w At what rate will water flow out of the hole?

  Water flows through a nsbu nphv7yhkb8 0 vlu6t6u ,95t6vb(horizontal 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. How lonfvg o*8rc y6kj*z1zyndx2/ v 4g 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 86ynvdj/fc4zxk *r o*2 z1gy voil 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 wall of an artery decreased tw: 8w9o,p u2nvcsom;u he radius by 10%. By how much would the pressure provided by the heart hav o;u9v2 wnps:,mc8wuo e to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan ofo:y; yv ehebfn729/q4u *ty)nsba:6dh3 or ra water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A,oy7;t9*)h 4h bobrue6f ynand ras/2:qey3 :v how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water risxt sz8,+c: 1kgj.djob:w p(rje in a capillary tube of diameter 1.2 mrd8k +1xjpcjbt:(z, o. swgj:m?

  232

  To what height would waterc 09ap*sh.t gt at 0 degree Celsius rise in a glass capillary tube with ashpta *g.c0t9 diameter of
0.50 mm?

  A narrow tube is placed vertically inx,fd9sk/:p*v gd qd5i 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 or: v,9xf sd* dgk/qid5piginal 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 width 0.600 m with a soap fq ;ki53um0w :qoua0h eilm formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much for5o30a;i ewq kq:mu uh0ce does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame haspntjocmjwai )n32; 3) kybj:; 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 surfaco3nik ):y c3;a t ;bj2pnmjj)we tension 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?