The three common phases of m5u(yz rowk; u:/s sak9atter are

  Density is

  Substance A has a deumgu 6qdhrgf-u5f **,nsity 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 press) uk-kf)oaji-6 znou g4i1di:ure?

  Consider three drinking glasses. Aicy9l mrmdb8 hn2),5 qll three 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 d85h rqmi,lb)y2cm 9npressure at the bottom?

  What is the difference betwe vg: iagbjw 227x39wpgen the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens toygua3u(v,x1c6u;z) d quq/h j the absolute pressure at the uazy/ uc3u6jd h,q (1qxg;) uvbottom of a pool?

  You are originally 1.0 m bene :z2w9 pcc0bx j(tk7dokiso,4*yko4j ath the surface of a pool. If you dive to 2.0 m beneath the sk7jc40*9 wjcbsxdtzy oki24pk,:( oo urface, what happens to the absolute pressure on you?

State Pascal's principle.aw0iy k s xbnb):zjz2.xzn )8)

State Archimedes' prin rja,3zn ss;xwesot ,s4 4e*uja 8xd((ciple.

  $50 \; cm^{3}$ 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 d/ctx:h .w lnj.eeper into water of constant density, what happens to the buoyant forc x/.t:hn.clwje on it?

  Salt water has greater density than fresh water. A boat fjj7* nt:ar+ hhloats in both fresh water and in salt water. Where is thha7hj n: +*trje buoyant force greater on the boat?

  Salt water is more densd7619u)b h ps7 hz6u2rnklgs he than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt wath1gs hnu7lp )ku9z 7dbh6sr 62er is

  A steel ball sinks in water but floats in a pool oj/g jwl.oeja rd:5 fp 1uc9+9wf mercury. Where is the buoyant f:5rl p9jj g wfcou+e/w9dj1 .aorce on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a laked*v, x wd28qeu, right next to a 10-kg piece of lead. Which has the greater buoya,xq2wdue d v8*nt force on it?

  A piece of iron rests on top of a piece of wood floating in ab: a/ kw/zwf68nqrkk( bathtub. If the iron is removed from the wood, what happens to the water level in thnkwk/ r8b(wqa6:z kf /e tub?

  A piece of wood is floating in a bathtub. A second piece of woodrb-)wldp0zvxp ,bj;sa k+ z:( sits on top of the first piece, and wz;)jl v(pxd bsp+abz :r0k,- 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 k-(3c nq6wj2 )l3m2b dn v 3aluthnd0-hg*lj na pipe. The diameter of the pipe at point B is larger than at point A. Where is the speed of the waterdn*32bnkh3lld an 3qjgl cu- v wj(n26t) hm-0 greater?

  An ideal fluid flows at 12 m/s in a horiq2xe6 ( ognna )hve,,gzontal pipe. If the pipe widens to twice its ori62 v (xo g,nqh,ngae)eginal radius, what is the flow speed in the wider section?

  An ideal fluid flows at 1*)i g9h bw(aw tfzt7c72 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow sb7g tw)*twh z c(i9af7peed in the narrower section?

State Bernoulli's principle.kpc9 w:jg*0m9 wsz30e(lx rrh

  Which one of the following is associated with the law of conservation of ener6 ya;y2cl2i segy in e y; 2ysa6l2cifluids?

  As the speed of a moving fluid incre6 5m h+g2uel+frvk nsb:mh: 7hases, the pressure in the fluid

  Water flows through a pipe. The diamete ka6r 1(/dcgz/+3*m,r,elpuxfgy pzpd0q3g yr of the pipe at point B is larger than at point puk3z0g3ql+(1e, *parp6,yyrz/ df/g dx g mcA. Where is the water pressure greatest?

  When you blow some air above4gjwfjio,u )jsf(h+0ka. d d 5 a paper strip, the paper rises. This is because

  A sky diver falls through thec1bnjz-0/9rq otcu eo*nyj hw0(/4.,mcowh e air at terminal velocity. The force of air resistanceny-1ounr/9j to, e c/h.cc0e*mw4 q0bz wjh(o on him is

  Two Styrofoam balls, of radii R and 2R, are released simultaexqq2 xk:v)w.yr1 n+ ivb7)laneously from a tall tower. Which lrxx)1q2yve):+ kb.ivwqna 7will reach the ground first?

  When a small spherical rock of radokyi0chzn+)w q 9pq9,ius r falls through water, it experiences a draqh)pyqiok0+99 wcnz,g 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 qgd mh:9px,vrv: b 5k4of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest chanh,x4rv::k m b5 pgq9vdge in the flow rate?

  Two horizontal pipes are the same length, butz k09tb(oz 1 pin3il:j)twt v z,u)r2s pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of twkr 2o(i:z,) tz zljv) bu3t9 i0ps1nthe 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 B ig ;pu (3 ihg3r/dbeg(9j j8mrjs 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 Au j8mh r(jg(pg/9dgj 3;r ie3b?

  When soup gets cold, it often tastes greasy. This "greasy" ryajo- ax02, ytaste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is rea-yyaa 0r 2,ojxdily explained in terms of

  When a tube of diameter d is placed in water, the water rises *skk6 v 4 *pbjfj2pbp,to a height h. If the diame4bkfs,p*kb j *pvj26pter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are su,( : s)jc1;nrodgg2vmpgsaf -fficiently 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. Wha ;- c s2op jra()gsvmg1,nfdg:t is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightwaso9gf d 2 1deqeuy7)9eight 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 bugq7o219g f)as9dyuee d B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 x, j;n1arm*n(uqgs( kcm has a mass of 30.0 g. What is(sjr nk guq(;,nam1 x* its density?

  A liquid has a specific gravity of 0.357gy9y 8a9nj*sss)zmz 8. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Wha0m0r(eb7uh4) yphq m zt is the maximum pre 4mrhbzhu(ym) qe70p0ssure it can exert on a horizontal surface?

  A person weighing 900 N tvxndpkw v9x n6a(d0 6238g jfis standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a de q;4r,mxuo b07gzw0 slpth of 120.0 m in the oce w0 ul,z0qobsgxrm;74 an?

  A circular window of 30 cm diameter in a submarine can withstand a maximum.j44xp kt3 *yfo1u nkytc4pwr s1+w, h force ofcxwysn3w4h4t ,p py.kfrk11 j*u4+o t $5.20 \times 10^{5} \; N$. 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 absolutelar4v; fu9 d7x pressure is 300 kPa?

  What is the gauge pressure at a location 1h oe ,c1to6fj*5.0 m below the surface of sea? (The density of seawa6 tje*fcooh, 1ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location saz v:0/v uo)m15.0 m below the surface of sea? (The density of seawateum 0/osvv za):r is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on 36r;ggodhe5x(q l76; iw v hcpthe small piston of a hydraulic machine. The small piston hahwq(;g7o3ihrx6 ed pv6l;g 5c s 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 hj;aknhk/. 9tnxg.t(n4p( p rlift, 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 lk nk.nt/4h(n9p j rxp(.;gha tift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifth(1d )3ssbtj ved by a 25 cm diameter hydraulic piston. What force needs tojh(dtvs 1b)3 s be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0iccbj042ir *f to.l*d cm, and its large piston has a diameter of*itc 4bcflo 20dr*ij. 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 the buoyant for .s v23g2dmpfwv 4lr0tce of thefm2 2 d vsw0.rvp43glt water?

  An object has a volume ofu.) gbh0o rh.z $4.0 \; m^{3}$ 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 :cedp);rp77 c d6fxk8fm7dmvsubmerged in water. What is the tension in the string? (The specific gravity of iro ddkp 8fe;77mpmxv)r:cfc76d n is 7.86.)

  If the density of gold isc xa*t*lhi)rt ;v/pg;uvzq :6(j x 3tq $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (densitt7vbc/ :-h/ wl.ywue my = $7.8 \times 10^3 \; kg/m^{3}$) 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 whethw1rrj 6vk,d a+-wx7 n it is in air and 6.86 N when it is immersed in water. What is the specific gravity of the object?w1xdvk,+7r rawt 6 j-h

  A container of water is placed ongz 2m-/f murxpk x2/ 7uzt,on6 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 lowerekmgx-t6n /f/2up ,mozx ur7z2 d into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with ap/;mrbu;d d; w mass of 1.0 kg 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 bap0w c*op) rln;rely float in water. What is itsc) o;p*ln0r pw mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, j.5 yhcpggv7p au45n c(w/g 3ic i:wp:and 0.50 m highg5p(cwi.5j :: g 4vwanguhpyp3 /ic7c. 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 half its volumg0sg gvcz7oe/6l12q ge beneath the surface of the water. The weight of the displaced water is 2000 N. What is the 7e0/s2gglgqo cgz6 v1 weight of the object?

  A solid object float,g3wti 8tyv4lv)9./ vl l fpgas in water with three-fourths of its volume beneath the surface. What is the object's den/v3 laytf9vt.v ,wi4p8ll gg )sity?

  A 200-N object floats with three-fourths of its volume beneath the surface+:wy ;sph wc-ru- bvb/ of the water. What is the bcr+- bb:/wuh;-yvw sp uoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What i)iiwf8 9* rnqds the minimum area of the floe that will just support the bear in sa9nr8) wqif d*iltwater 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 rate.35l7w;xg8hq e r5m.u (fcv1m v1lbm hl

  Liquid flows through a 4.0 cm diametwo/ ix.qm f,,zer pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What iwo/m ,z.x iqf,s the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a2rrej 0aq as+.qb2 u8q 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 fountain with xvvqu ; gm*ibsj ,b6pl*2:1nj300 kPa, if the f*qlb2nixjb s ;16uvm :jv gp*,ountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that h ,bctgfz)dv-kg/:6rvcu/l y6olds water at a depth of 15 m. bd lrgguy66/ c)c,:vftvk z-/At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectl/0g cmr. m(t z*5bmcwional 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 ofpw ;9u gd/rh3a 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 diametw g9hurd/3; aper? 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 the wall of an arterqrhw 2-jb8a/35pap.hs8 exg1l f h;yuy decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow2/ra38au1.hxfs jh -pyh l e pwq;5b8g?

  Two narrow tubes are placed in a pan of water. Tube A has tw)yg(ixz7 2h hi: py)lgice the diameter of tube B. If water rises 24 cm in tube zg pix(7 lh2)y)gi hy:A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a -ovz7m)v0fzo capillary tube )7ovmo 0 zzfv-of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass .p ts 4)cpl owr28n/hpcapillary tube with a d2p4/opl rwnt h8cp.s)iameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water ro-v pj+- j(swcises in the tube to 4.0 cm above the level +pjs wvc-- o(jof 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 width 0 bvush2fmt )chze p; -3nu1,lm5g)d9k.600 m with a soap film form dmp9f3 1lmce,;hv-n)tu g) us5zb 2hked within 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 io o3r.w uj;+dud/k* v12 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.dro;k j u+ u/w3ovid* 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?