The three common phases ofo(cwwhjzr3 1uki5 w+ 15qk nbrg;(6bm matter are

  Density is

  Substance A has a densih cbq 1e,4eei 7:us6fsyj8jufu,0lt ;ty 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 pressurj7 u bj038dd(jkc mi v))yr)bpe?

  Consider three drinking glasses. All three have the same area base, and aeii qc+53jdtkk.r -f/ll 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 t.k3ifrdic -j/te5+ q khe bottom?

  What is the difference between the pressures inside and outside a tire ca,-k pp diu,/wtlled?

  When atmospheric pressure c m4.,jm)ego erhanges, what happens to the absolute pressure at the bottom of a4me rg) jome,. pool?

  You are originally 1.0 m beneath the surface of a pool. If you 5 wu4z jz6.3dn*fxy i:vo0 ma:mdgi5xdive to 2.0 m beneath the surface, what happens to the absolute pre ia3i 5zjwmdzfgu0:6vmnyo4d * x5: x.ssure on you?

State Pascal's principlyctf (;sn s+q*e.

State Archimedes' principq60j;sneo l yv5:i:mble.

  $50 \; cm^{3}$ 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 density, what happens i9f+xcss/te9e9qs dnr-ih4 ( to the bue-dr i+sxfi9 / 9s(cqh9ts 4neoyant force on it?

  Salt water has greater density than fresh water. A boat 0awmy -u6jmb7rqu/ /b floats in both fresh water and in salt water. Where is the buoyant a /b0-m6r /quuyj 7wmbforce greater on the boat?

  Salt water is more dense than fresh water. gs (au mc 6le1fw+r9o1A ship floats in both fresh water and salt w19+fls wg c r(6e1aoumater. Compared to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks iv 5e (t/5k nrawowl(m.n water but floats in a pool of mercury. Where is the buoyant force on the ball ge w5/ 5mtnw. (olar(kvreater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg p1-9rpw oiiosc8v n:lk e/+ i4tiece of lead. Which has the g pv8tl9ec1o o /kr4sn-w: +iiireater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If the x v,y**q 4aec/idcpo, 8k ;uguirondao*ep ,kcu qi 4g /,;v8ucyx* is removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece q;/at 7,x3h)vbs bsmbof wood sits on top of the first 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 tm;qvbx 3,/bht7abs s)he tub?

  Water flows through a pipe. The diameter 5xs*0h pb 5wu9)4a+sg9tcank du4rj aof the pipe at point B is larger than at ppa*d xnr ghu9sjwb9 5 0a)5+tu skac44oint A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe *qct n8qd: cf7yw p)zjo*x96f widens to twice its original radius, what is thc 9*cdxqqo 86wnf7f*zpj:ty)e flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horiz:o x*1kr uuis9p-bah +60v cydontal pipe. If the pipe narrows to half i0uurox pd 61v -9s kba+cy:ih*ts original radius, what is the flow speed in the narrower section?

State Bernoulli's princ*gmyzp22b w: yiple.

  Which one of the following is associated with the /43acwn z5 okrlaw of conservation of energy in fluiz4 /rcao5wnk3 ds?

  As the speed of a moving fluid increases, the pressuredesvp(mi 4 q44 in the fluid

  Water flows through a p zt bgy* t1846afdlig7ipe. The diameter of the pipe at point B is larger than at poin6*l87ygb4 t d 1fzagitt A. Where is the water pressure greatest?

  When you blow some air above a paper stri r*1tsg 9sco.qwyn97+b hf* mxo*yr +mp, the paper rises. This is because

  A sky diver falls through the air at terminal velo;r0x8k0:zvdbgx c3,h,xl yk w city. The force of air resistance on him lz xcxwbd;kxy:03v ,,k h 0rg8is

  Two Styrofoam balls, of radii R andjxljs)ysoj q v+/u9on 8 )t)w9 2R, are released simultaneously from a tall townujoj)w) +jl 8tx9syvoq /s9) er. Which will reach the ground first?

  When a small spherical rock of radius r falls through w3dt 4;kiel3lg ater, it experiences a drag force d4l3 etg;i3kl$F=arv$, 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? is)vlf07hxu2 r /k8 zmt(7d x/ufmy 4byn2n+t That is, if you made a 10% change m7 f(h xulvr0d8 t22f4ns/ txyz)n7+b/ukiymin each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are ul aq7 e(l0r;rw8nynoh z0 d02n8t*r tthe same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across2qlrno8n ya0ez7;*h80 nturw (t lr0d 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 diamet.d9pnv8gf z0 e57dcxpu 2 i3,8 psvehyer, 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, what is thevzevy9357 hn2upx8g,e . 0fcpispd8 d flow rate in pipe A?

  When soup gets cold, wyfqajb3rw)8d* 9q df0r )cj. it often tastes greasy. This "greasy" taste seems to be associated with oil spreading out aqw83a)wr*rb9c)q fj. yfddj0 ll 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 q)onq y f0ik.0water, the water rises to a height h. If the diameter w .kno0yf)iqq0ere half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficki9 dij; n;d3qg z- ,vbc8zx*qiently 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. Thatnkd- *dcx qjq9i; 3iz8,gv;bz is, bug B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as th8xemydy6 a .o6e water bug, are sufficiently lightweight that they can run on top of water without breaking the surfaea 6xy8 do.6myce 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 B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.0x ccn -uifklj1lw pry5-863)p 0 cm has a mass of 30.0 g. Whatkr-1-c yj536)pc nuxp wlli8f is its density?

  A liquid has a specific gravity of 0.357. What is it a,6 yuhmv*l-m/ mkk5z j-4khxs density?

  A brick weighs 50.0 N, and measure )e4 wt37ysmzhs 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exethse)m4 wz73y rt on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snob i8aoy+ec 4 853qjjbdwshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 3twq: ec.2pc 6p 1f dwed4.pwqm in th:.62 4dtc3wwqfdq.p p1weecpe ocean?

  A circular window ofzp i6f y2cxu8t()xs5z 30 cm diameter in a submarine can withstand a maximum force 5xpx2) i6 zf zuc(st8yof $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge press2z 2d5h1i taooure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the sur .mnn3x 8tc:mu,sf)kvface of sea? (The densin.c3mmnux8v,tk f )s:ty 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 r3n 4(m2;8rwrrm75v.v lk plbr2rupt ) b :lgaof sea? (T l7 mtprpwln)38 4mvr5r. l bak2rr(:vrb;2g uhe density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small pisi18 (4jrjj nye58sy eu0ta wa*ton of a hydraulic machine. The small piston haiee*yj jr 0ua84na( 51t sj8wys 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 pim-xthn- 7s0u5xlz ejpl 8l65f. r-v bcston 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 N on the large pisto7h jbz -tvc rplf8s5.65mxnl0-x ule- n?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydrauliw k.i6z*gg+p;huvomg8 6hd 6 ac piston. What force n +mzhoig66p6 k . gav8*dhwug;eeds to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift 9m,kn+alu h, qhas a diameter of 8.0 cm, and its large piston has a di+an,lh, 9kqu mameter 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 -u1z5kcyd mg1m 3d0w s x5zwh)and 30 N in water. What is the buoyant force of x5) sk1 1mgmyzw0du5wz- 3dch the water?

  An object has a volume of mxbd:cv1xx*2 g *lgy($4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron isijl9k* -p5kq r supported by a string while submerged in water. 5*i 9qj-lkprkWhat is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold 6vxg/90y *z cpxlp o+g2 jqzx7is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarihukl.* rvrtwu0rncq0 w yxjk6;)h (()ne (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 immersed in waecb y-g.f (9bvtecb9 .(ebyfg v-r. What is the specific gravity of the object?

  A container of water is placed ( mz8 y6sp/jnkqhi+gpq(i- x5on 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 water, not th6-sz q5(m + (8xkqpynigijp/ouching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg and density 3 p bqcno:8me hlexn/ky*c (w3(z 1pu(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 2.0e /kfn.vib0zmt));* rxjsy1x cm will just barely float in water. What is its1 * ) y ne/rs)x0kfmxijvzbt;. mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, ani*c;l*t*r 7 qgp cvaydb(t; 5id 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks*ytab d;*5v; lg7riccp( it*q 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 ( 3uuk;ooulk k8cb/o1 9+dbfn. The weight of the displaced water is 2000 N. o/dbn f k(kocbu;ok 91u8+u 3lWhat is the weight of the object?

  A solid object floats in water with three-fourths ohg(5* v u7o4mn mk,k4b avdqa2f its volume beneath the surface. What is the obje *( ,mqvmkn o4u2k7aahd54gbvct's density?

  A 200-N object floats with three-fourths of its volume benlq d ha+ 126d*naybq(beath the surface of the water. What is the buoyant force on the objecbq*by1 2l+6anq d (adht?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the mir/ ny1lu:8e. sdkjz;gnimum area of the floe that will just support the bear in salr/ u.l k;zndy8jg se1:twater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at /j f:85utz cyy2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 mn(oy dtk-un 5*/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in* n5(-uny tkdo this restriction?

  Water flows at 12 m/s in a qj*dd r z*2qw651uhmt 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 pump to supply a drinking pof4j u-ks4qa13 4svyfountain with 3004- 1jfs u4 vpyk3as4qo kPa, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that hojmzt* *0c/uyx lds water at a depth of 15 m. At what rate will waterx* z*y m0t/cju flow out of the hole?

  Water flows through a horizon99em 5*n2fjktoi92g x4xe3irnpy .z btal 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 long would it tlg9j2kisg +e6 x/v9n take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume t2t glisng9/6j+x e9vkhe 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 buiyq+dvmc ay/ 89ld-up of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood a8 c/vd9+myyq flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diametm0e(;n:dc* zccdrb7ker of tube B. If water rises 24 cm in tube A, how high will it rise in tdc; ndrzmc*:0k eb7c (ube B?

  The surface tension of water is 0.073 N/m.9,y5yn ccu xj:sbe,q- How high will water rise in a capillary tuqbnc 5yxe y j9u,,:cs-be of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a twc*x .wqe s1k k/mj,a(mxc+(4-xq nsglass capillary tube wiwj /qwx14skct s,mkx- namq+(.*cxe(th a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and wd2hxy/(pj9q b b;b,gz7 n/ vpthe water rises in the tube to 4.0 cm above the level of the pan. The surface te;gzb bnqd/vj( 9 p72 wyh/pxb,nsion 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 w e.4))iozf.xuh 3uadl/p/ gdeo 8t*auidth 0.600 m with a soap film formed within its confined area. If the surface t)eg4).u./ d ot/xul 38fo*zeuaad hp iension of soapy water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectang h cs(ln8*es(hular frame has 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 surface tension 0.026 l8nchesh(s(*N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?