The three common phases of matter f4ccctqs u h)ulx 7i; )m-r4f8are

  Density is

  Substance A has a density ofhcw:a7 c-l f0y $3.0 \; g/cm^{3}$ 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 pr s z1yd0p:pg 2exmnm.0essure?

  Consider three drinking glasses. All jmebf6/x8i)5 hrjk;cthree have 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 narrower at the top than at the bottom, and so holds less water than A. Which glass has the greatest liquid pressure at the bottomkc/rej6 8i mxb )h;5fj?

  What is the difference between the pressures insiderssf 0;v iie3y5qp90 k and outside a tire called?

  When atmospheric pressure changes, what happens to the a bw(g5f00.l oj rtjje(l)e(jo3 /ljc rbsolute pressure at the bottom of rj.l)0( j j(w e/3elf5jr0locjb(tgo a pool?

  You are originally 1.0 m beneath the surface of a pool. If ywumzo*ynqar(6bncs ;u))n *8 w5f0 nq ou dive to 2.0 m beneath the surface, what happens nqwyus m*8 w)o5f6*carn )q (bu0nzn ;to the absolute pressure on you?

State Pascal's princip2*, +q:ptheywhbmh g*m* q 1dale.

State Archimedes' principlyyxvolpl 1bv4e7.drs*g+xy v 3* m9n0e.

  $50 \; cm^{3}$ 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 consta6v/d m1oq;z bji d-*yfnt density, what happens to the buoyant iv1* djfqb -;doy/ z6mforce on it?

  Salt water has greater density than fresh water. 8;ayw v l64hhw A boat floats in both fresh water and iy 4lhwvha8 w6;n salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh watean98ua42/vx s * voaxkr and salt water. Compared to the fresh 2k/s8n9*ua oavx4 xavwater, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where is t.-wzftu+.sbrg * p+vrhe buoyant ubt.g *.svwpf+rzr+- force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a) j m2k7p*robkbr2, mh lake, right next to a 10-kg piece of lead. Which has the greater buoyant force on irm2ojr *,)pkb km bh27t?

  A piece of iron rests oi;bdu 69 /0v0 7dlsg7 kpgimein top of a piece of wood floating in a bathtub. If the iron is removed 9up l idse/g07v ii6k g70;bdmfrom the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of w yl18o (zvs wso732cweood sits on top of the fiy wsvw(z71l e 2osc38orst piece, and does not touch the 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. hgk;z 6emx 0y2The diameter of the pipe at point B is larger than at point A. Where is the speed of the e2;x0yhg6km z water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. yn()+e sgxybm p;7gt:If the pipe widens to twice its original radius, what is the flow speed in the wi7: xs(g) y mn;ptg+byeder section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to halff kklit 0jc7 vg6*qn+/b:cx +n its original radius, what is the flow speed in the nbjt :c+/v n76 xkl+ fc*qgik0narrower section?

State Bernoulli's principc37 oo2aga ,op l.a+aldaw5sw 0lpr/1 le.

  Which one of the following is associ5b9 td/+mjk4lc a nl(cated with the law of conservation of energy itn j l(lc 5k9dc/4+abmn fluids?

  As the speed of a moving fluixoob,cgb8ng)54 m - vod increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is la2x9 ymonb4aqa 0q7l5frger than at point A. W40a 9la5nmof bq2q 7xyhere is the water pressure greatest?

  When you blow some air above a paper strip, th8b*4d4ac4jln+o jwg-rgtp(oq1 c yp 7e paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force oftv ilp fpjw54.slnqh(u)pr )5x-*v 2 p air resista .lrup lvn25v)sw*pjtf5hix (q4)p-p nce on him is

  Two Styrofoam balls, of radii R and 2R, ar7il/b8,g al8k/hd oaze released simultaneously from a tall tower. Whic8 /,bild /a8zo7lkahgh will reach the ground first?

  When a small spherical rock ny) ze2v3 .cwtof radius r falls through water, it experiences a dryet .2znv)wc 3ag 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 u;o6)el9cly yof fluid through a narrow pipe? That is, if you made a 10% change in eacly9y6u lo ec);h of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B hah3m(finxo1- +lmojr0a,f 8y ws 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 flow row(r8onmfh,1 y af i ljxm0-+3ate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe B is twice :.gqkp/ dw;nkas long as pipe A. Water undergoes viscous flow in both pipes, subject.;n kpq/dg: wk 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, ito0i3yy2stqy-t vpd: sw 0ov(. often tastes greasy. This "greasy" taste seems to be as:q0ysv(d.t o2p3s0t-wo iyv y sociated 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 is placed in water, the water 7)bub kipg d9/ ak f/aho)k4h+rises to a height h. If the dia)ak /p aubgh49hdbkio/k+7)fmeter were half as great, how high would the water rise?

  Certain insects, such as t33gpe u0(5c- mgtkd:swj tsz) he water bug, are sufficiently 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 twi-dgkm3zw3)ssu5 ep t( :t0 cgjce as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweight tq5z28itfx 5cmt1r)7w lkx r6pv/v ru9hat 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 thw vt1v7 fx rml2 56xr/qi)zctru9 85kpe feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cmw 0+41q9kz53e 3fzcv8imkl(jag l djz has a mass of 30.0 g. What is itz9(1 j 3 z kew lgqjfd0mklci583+za4vs density?

  A liquid has a specific gravity of 0.357. What is its densit;h,snqzpbrb8 fxskxry l3hn ;c3 (200y?

  A brick weighs 50.0 N, and measyuyl. 2*gpw-uures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it ca-.*ypwuy 2lu gn exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each .4wspa1 g6 yugsnowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (abso97z *u linlje )1nco0zo+alc9lute) must a submarine withstand at a depth of 120.0 m in the *u)zoc 9nnle jal l7z01 i9+ococean?

  A circular window of 30 cm diameter in a submarine can withstanjzf/ h)5ptl f;d a maximum force f)fl;ph/jtz 5 of $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressur+3/et da xi f4asj*5j35xsowpe if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surfa/qlxbal3xv)o q.ha ;.bl-;jo p1m. xxce of sea? (The del-1mlabqx.xp x; bo ;j3)ha .olq./ vxnsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a locafgvj1n4an9s r;- dmeu 4y-5 rr:.mp nction 15.0 m below the surface of sea? (The density of seawater i4 nuc5vmp:yrr4-d.m 91asnj- er; fg ns $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small pisto4iy/nc, ekgado 09z/ dn of a hydraulic machine. The small piston has9k/dn c z ed,ga0oyi/4 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 s;o pqfa yj;(qee- .jb+rj0*zof 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 20,00.z0a ;s(joq je;y perfq* b-j+0 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 250nftli 98 8nlg31 wtlw eq6a2c cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter pisttnwe 286f10 n8 wl3cglaitql9on to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, kjgi,hf ur,o.1sjvk)5 7 da1k and its large piston ho1a7 r)k 1.sukg,f ,hdjvi k5jas 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 z+y10v5t exomx, +me iemoc;o2(s8r wis the buoyant force yxweomo oms0 2z5mer+ 1;x+i8ce,t v (of the water?

  An object has a volum mx y 6bm2pfsyv7 1cy,+vsf3,ce 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 submr3 m293ii9;u6hvm ifyjv mzc r7l/tu;erged in water. What is the tension in the string? (The specific gravity of iron is 7.86.rc;uz9tfvvi j im6 ml9r2; y/3u7m3 ih)

  If the density of gold io1 ic; 2y9ge wj6 5sr4pxmcgp/s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarin)yfb4ehy (8iw u t2tg3e (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 am8s /ai yg6v2 0t4pdewhen it is immersed in water. What is the speci4tmvgpea s8dy i/0a26fic gravity of the object?

  A container of water is placed on a scale, and the.q;o+c*n7 7dtelmy xk0 mul2f scale reads 120 g. Now a 20-g piece of copper .72cm0mnl;oy * d7tkxfqe+lu (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 kgsqda, d9:au4a 1)/eg q*narz .ej+yqv 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 bahe.smyq3 4kj :rely float in water. Wh3k ye:.q4smjhat is its mass?

  A rectangular box of negligible mass measures 5.0 m lonk lqnu780zgee npa783g, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before i77eeg 3qnpul k0n88 zat 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 water. b 37tlp;y4h ingk rd8tf5 dx11:mb(jl The weight of the displaced water is 200ghl bd7(:;5j t 8pk3 tyfdmb4i1lrx n10 N. What is the weight of the object?

  A solid object floats in water with txzj 3 fd2l..s8em gv,fo)ga4ghree-fourths of its volume beneath the surface. What )fz,3gla..ov4g dsfe mj 2x8gis the object's density?

  A 200-N object floats with three-fourths ofk; nrs s-*q gb.ua jte4v3 )qyks6od:73ea3ps its volume beneath the surface of the water. What is the buoyant force on tt 7-3k:g ;e.ssd)ensyqq4j p u3kaas6rb* o v3he object?

  A polar bear of mass 200 kg stands . ptm9 fu5hz). hyysi pe4 w6t-u;yn7gon an ice floe 100 cm thick. What is the minimum y6 ;.9ephnyg7 -.uf)p imust tz4yhw5area of the floe that 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 flowk prw8 pqic7xond7d74o3 5.xw rate.

  Liquid flows through a 4.0 cm diameter pipeg. 3ob/-6gzhy+ rgkmf at 1.0 m/s. There is a 2.0 cm diameter gg z b/6hfko ry3.-mg+restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal x01v tb9ji5w2f2iqzv 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 a drinking fountau+me06dp3*q(jz y zcj in with 300 kPa, if the 0q(6djj m+u pe3zy *zcfountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the botl)n ak64bgy 1ba+gzf, tom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow b6ga , l+41nazgf bk)yout of the hole?

  Water flows through a horizontal pipe 2tb)z) izsc:b7nacw/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 viscosi0ae 6r2xbwc2x *wmw:p ty of 0.20 Pa-s. How long 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 above the top of the neck, and neglect an2 w*0 6 c:xrxb2wmwapey drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an arteii*amvo x0tv-0e.kdop 5(r2zt 9 )gpjry decreased the radius by 10%. By how much would theviod mpreix *5vkoat2z gtp-0)9j 0 .( 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. Tyv/d*8uku 9k4jrb a0 mube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it risvu/r*mujkk4a dy089b e in tube B?

  The surface tension of water is syf-jx/8bmf o5 h( s7y0.073 N/m. How high will water rise in a capillary t yo jsfxf8bhy(5s/- m7ube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a :g5blzhgmxgqi 6 259ab6 yiy(glass capillary tube wit 6 ag65 myb(i gqhz2igb9l:xy5h a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of wat xmyw0pqblg.qb am*(z* fz254er, 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 inmaz4 *zfp05q xby b *lm2.wqg( the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with an pcg+ug,-zu/ e,lhe m v3is v5y:+)*l t+yvrc soap film formed within s+thegv:,m l,*+zvn3lg-cry u/eu5 i)vcpy +its confined area. If 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 12 cm and width 5 cmfr8 c llkuxe v d5z.s+ lg7/b4ravz9:bh3z-:p , and is built in such a way that one of the longer sides can be moved withoglxrfz el:. +/ svhkvrb3zp4 b-l8c7a:d9 5zuut 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?