The three common phases of mattd6d64r nobu+ bc(;8 vdeaq8scer are

  Density is

  Substance A has a density of cxea*1s kc k ;97w55wgrii8d 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 unijzf368+ s6 uoib*tdoo t of pressure?

  Consider three drinking glasses. All three have the same area base,lsu4e*vke5 d, 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. Glas 5e4d*kvl,esu s 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 between the pressures inside and h,g) e(h xq 2ob7x+djtoutside a tire called?

  When atmospheric pressure changes, what happens to the absolutez li;7tg/xf1u pressure at the bottom lziguxt/ 7;1f of a pool?

  You are originally 1.0 m beneath the surfad ede( 0h m mc,lk8a-k/rhtu q15lb0w(ce of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure onclme,d (t5k01wdebu-amhq krh/ l(80 you?

State Pascal's principlel5wv7r ymr t-+8n -vhw egw;i;9x; twz.

State Archimedes' principl ott2 1i:6 tkn)jvmv9de.

  $50 \; cm^{3}$ 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 constan/tgei)c5l:1 )yrecl ,kk f(vot density, what happens to the buoyant force grk)f e(o : 5)y/ lvc1cit,elkon it?

  Salt water has greater density than fresh water. A bo, u2ffz3fs,eaat floats in both fresh water and in salt water. Where is the buoyant force greater on the bf 2,uf fsza,e3oat?

  Salt water is more dense than fresh water. A shipchfs6- +egjyj:tqo q6j e11d( floats in both fresh water and salt water. Compared to the fresh water, the volume of water dis(g1-qt1+odeq6 :yj jc 6fhjesplaced in the salt water is

  A steel ball sinks in water but floats in a g/+ 7atzyous) iu30x qpool of mercury. Where is the buoyant fo guxiout7zs)0qy3a+ / rce on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg x* z:ouv7c.8emd tm;xpiece of lead. Which has the greater; 7* 8.vec:xdotmuxm z buoyant force on it?

  A piece of iron rest-c8b (blnmrclq./ c6ss on top of a piece of wood floating in a bathtub. If the iron is removed from tm cc. 8/-6sc lrlqn(bbhe wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piec5pv/4ec xbgu3 * .fgnme of wood sits on top of the first piece, and does not touch the water.v4n*fu exmgp3 . /5gbc 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. The di d 0p20 roh2gcxa8ex*qameter of the pipe at point B is larger than at point A. Where is the speed of the water greater 0are q2x20c8gh*xpod?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twqg(l+)fh il0 ttcf2*gice its originaql 0gt h*+l ()tcf2gfil radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe naecfg t6 gp7a2,s1rt t9rrows to half its original radius, what is the flow speed in t72 e,9 tgfas1 6rpcttghe narrower section?

State Bernoulli's pr/qnb;9zho7t)qm aq d.inciple.

  Which one of the following is associated with the law of conservation of ene)qcw-zo *hjsr;2+ vk v2 xo1ygrgy o2*qoyv1k) szch+ 2r;wvj g-xin fluids?

  As the speed of a moving fluid increases, the presssed:lz 0rk::ture in the fluid

  Water flows through a pipu:s;w7 8c p1dt,ta reme. The diameter of the pipe at point B is larger than at poi s,dau emw1cp7tr ;8t:nt A. Where is the water pressure greatest?

  When you blow some air abo- )yo gdemrk17hig 7n5ve a paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. Thec/ :np wo qa,(t8wn7be force of air resistance on him c(b7on8npa we:q/t, w is

  Two Styrofoam balls, of radii R ann/s+ u-i5m09dgf pqwdd 2R, are released simultaneously from a tall tower. Whi+w pu0s nm9i-d5q f/gdch will reach the ground first?

  When a small spherical rock of radius r fallsa2;h- pdgw8of/jow : hr8p s. 1erem;u through water, it experiences a drag fo21e:ph.8rohojr-sw/ ge; m apd;wf u8rce $F=arv$, 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 eff pfd48r .ytv*vtvrt ,-ect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in8r t. ry tf-v,pdtvv*4 the flow rate?

  Two horizontal pipes t3qz8+ knm ub)are the 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 across the lengths of the pipes. If the flow rate in pipe A is Q, what is tqn8 tz+kmbu )3he flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe B is twice as tv;w 23hjm 2w1ecfz a(long as pipe A. Water undergoes viscous flow2vwfae13mw j;zc (2th 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 A?

  When soup gets cold, it often talmo7w 4 0zf ,aw9w rfdq1g30kfstes greasy. This "greasy" taste seems to be associated with oil spreading out all ove dw o rw4q09glm037 1,fwzfakfr 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(t 3d ;txrxgzc4u(ib6: m55y l5x obas water rises to a height h. If the x5u dx3lx((g4b:abi6 5yt c orts;mz5 diameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that theyvot8ml-.y.n j 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, oy.m8-jlv. tn 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 alarmryy(88 d0sn y4ep .t c2e2s the water bug, are sufficiently lightweight that they can run on top cm.2yy80na2r8e eyt r l4dp(sof 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 bug B?

  A plastic block of dx0*-grkpnxvhrg;a tb;c m:dj + l 8q35imensions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. Wha :vl; -+akhgr*mqd;cpn5 8j0rxx 3btgt is its density?

  A liquid has a specific gromrzo+ t)o ,z jy2u-g2avity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 3z,06 sox -5o33.olfnwro af/o.pi z vi0.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a h 5lioviwoo-,x z./o.3frso a6f z30pnorizontal surface?

  A person weighing 900 N is standing on snowshoes. Eac, cab poy2z/9oh snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth o wwqf/m cjp+1sjv 03;x-ia4uj f 120.0 m in the ocmx/;1qi+wc fsjpv- 30ua wj j4ean?

  A circular window of 30 cm diameter in a submarine can withstand a maximumnf 0.mb38r uh5(-,wie)meemzxuc x 3 z force0n( reub u,xim-xz em e8hm wcz)53.3f 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 pressuxjr;,34mlpsv u )5sqo re if the absolute pressure is 300 kPa?

  What is the gauge pressure at 4f 54c p gh6w(nch);0rzibxpca location 15.0 m below the surface of sea? (The density of seawater ip4c6ir4cfw5c gxh();bzp n0h s $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pre gy1qapw g0f7 hsnbn/x8i/w62ssure at a location 15.0 m below the surface of sea? (Theqs6 p1ny7 a f80g/ww2gbn /hix density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. Th,fr gcspe o2b-6*gx s)e small piston h*s ge,cosx2-r)f g pb6as 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 of 5.0,fo9fkk t 46giy/jss. cm and the large piston has a radius of 15 cm. What force must be applied on the small piston in soj k6,4yti .gskf 9f/order to lift a 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. ;rga uh4txc)8 What force needs to be applied to a 5.0 cm diameter piston to accomplish;gxctr)au 4 h8 this?

  The small piston of a hydraulic lift has a diametevb 1)-36 jc*ittqvru:j*oylwr of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load *yvrtjj w3-vlcq6i ) uo 1t:b*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 buoya- y yb ;-wtn-qe .pk8plj4am7bnt force of the by et -kjp 4-qmbpw8l.7;ny-awater?

  An object has a volum9i/;rb n2 pljl:kfd/kc6sjf, a4yk0qjrp3 m7e 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 subms 5 (j;kio d8ym:jel;uerged in water. What is the tension in the string? (The specific grj85ue mol:;ks;ijyd (avity of iron is 7.86.)

  If the density of gol k c(87hyjvyc7dzel9s sb tp8*8-f:zpd 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 submaravd6f / 8kcs1dxy q9 qje,-a4n-ygo eoc zy9,1ine (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 aie.oqa- ojg+d5r and 6.86 N when it is immersed in water. What is the specific gra+.odoqa 5j- egvity of the object?

  A container of water is placed on a scale, and the scale reads 120 gt14k yayig7a; . Now a 20-g piece ig t47k;ay ay1of 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 density m9r19bzrnzuhni7; 6io,j l+ f 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 jt5/9ab 0x y ;a*49knzhdy rpcjust barely float in water. Whazp cbk a*9a;h0 drjt 9y5/y4xnt is its mass?

  A rectangular box of negligible mass measures 5.0 m lon )csg)1u+k+vck m-rydg, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in)gukv-+ 1dy sr)+km cc 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 hat3ciu) s; +ne ,n::9ca y hbrddb3gb4olf its volume beneath the surface of the water. The weight of th rb t , 9n433yiadd;cnge+ oc):h:usbbe displaced water is 2000 N. What is the weight of the object?

  A solid object floatsp gr-on2e)ap 6y:h.ad in water with three-fourths of its volume beneath the surface. What is the object's densip 2hoag y6pa:-r ).ndety?

  A 200-N object floats with three-fourths of its volu*tkt-i3))ro acv (j *8+ zl xfckcpah:me beneath the surface of the water. What is the buoyaxl3*a)*c-rj: zfpth k (ctc)ivo8+kant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. Whavmk 0 zzo y0sn;7y8,rtt is the minimum area of the floe that will just support th0z8o,v nrkys 7;t 0myze 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/ks;c h5/ l3 56mryecoms. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2k l3zt4( ufgr95yhf 0wtb.r u,.0 cm diameter restriction in the line. What f0huw g,9 ltz3r .5k4ryu(fbtis the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wit+ (i6afx iqlv/ikk k*6h 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 fountain with 300it-) g ri(6my7y 6rdh)ifp .nnvo3zfm2d5;ky kPa, if the fountain is 30.0 m above the pumpmdir3y6r 6n(gy)kz.) fpo idh2; -7 vfim5nty ?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tann.a 3gmpo)o;y u;bee:k that holds water at a depth of 15 m. A3;:;oou epnma )byge.t what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-srvdn 6*uekw .dxe5 oa,5np8up1w 51 rgectional 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 lonqenpy+9tqx )1g 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 the91q q) nyp+txe neck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of fa phz-t0b5b+z1ie f)xdndv)z*tty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the he -zf)bhdnb)v1 iezxt0*pd +z5 art have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the dp5bd/l-4os wrqqq )l8iameter of tube B. If water rises 24 cm in tub-5)w psql o8/bqdl 4rqe A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water brtcr9w.5a(f rise in a capillary tubrfta (b5 .9wrce of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in ahqhzh*bf x)q c (2n6/x glass capillary tube with a diameter h qq *6)hbn(xzx/2 fhcof
0.50 mm?

  A narrow tube is placed verticall ,578lco qbbyop0he*7rcqxi a. mzu ;2y in 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 original value by the addition of some soap. What happens to the height of the czlhi07y5ue 82*;mr.b q,7qx o pocbaliquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.60*.rz z(ejved,g7)eked9m7 n zi )4c:x1 qorsw0 m with a soap film formed 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 thzck) r1qi7 ) dw*xeedjro 4(zgsvz9e7ne:,m. e 0.600 m side?

  An adjustable rectangular frame has length 12 cmg/qbbt j*10 b)o(xgy x 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 0.02jt )o*0qbby x1/(bxg g6 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?