The three common phases of matter ax vbh*5gmg/ ,vre

  Density is

  Substance A has a dens gm+ iw/a9k6f)zijr6x ity 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 preer,lrs)lmt3 qjmr.:wo 26s(7ns6a6hsm 2 jl nssure?

  Consider three drinking glasses. All c6( :fj */;,/xhwqkg.9oq qxkphqzdj 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 th,hw d(qqx k6q:pk/jx .qf /;czo9g*h je 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 05bthgm4 g+ 1j4sndlrk2 9ivaoutside a tire called?

  When atmospheric pressure changes, what hwjxgn p7qf+ i+oe ;pt22ts*3 qappens to the absolute pressure at the bottom of a pg+ enp2q73+t2 to q fxw*pjsi;ool?

  You are originally 1.0 m xp dh.+):s wd ,fwgqd9beneath the surface of a pool. If you dive to 2.0 m beneath th 9dw pd:.w,dfxgq+)she surface, what happens to the absolute pressure on you?

State Pascal's principle.6x roptr-4fp)

State Archimedes' princs c((6x 0n6bdgr;q kegiple.

  $50 \; cm^{3}$ 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 happeezt *f*+lr a;uy9ifwit+2v8pr ,e/m h ns to the buoyafart;+fpme/lwre 2hi*t+ iu98vyz,* nt force on it?

  Salt water has greater ccm7s* u lg7 qm;0+9t,mljuy 8il3nrwdensity than fresh water. A boat floats in both fresh water and in salt wamw umm7lcr37j9qt +8i,0 c;ny *lsgulter. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh water eau ys4j4/gp md2ydr+,tr+x /and salt water. Compared tjxay r4usyt/gp++,d4 m/r ed2o the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in watlrhwure0-.9z( x.- m+ehvvx f er but floats in a pool of mercury. Where is the buoyanthe fmle+r -(r.-9.whzu0xv vx force on the ball greater?

  A 10-kg piece of aluminum sits a k3vj h:cmm3v,t the bottom of a lake, right next to a 10-kg piece of lead. Which has the greate 3km,vmvjh 3:cr buoyant force on it?

  A piece of iron rests on top of a piece of wood floating 6lf8kttf 32h nvo5fc, in a bathtub. If the iron is removed from the wood, what happens to the f3,f hfnt2tvl6koc8 5 water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of woodg68fqycl14 4ffrd 2 vm+4j qud sits on top of the first piece, and does not tf2gfc dq jmy6v41 48lr+f4ud qouch 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. The diameter of the pipe f,tuwygf0(91wq dmd1 at point B is larger than at point A. Where is the sg0,f 9dwtqm yu1d(wf1 peed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. Idkado i *;i/z;f the pipe widens to twice its original radius, what is the flow speed in the wid/* dz;oidi a;ker section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe 4(29sntce xrv narrows to half its origis cnvxrt42(e 9nal radius, what is the flow speed in the narrower section?

State Bernoulli's principl8feyqr7buz66 sxm au)p8 97xtja,g 9ue.

  Which one of the following is associated with v6w4y *,edlo3f+iyq f g)k2czthe law of conservation of energy in flyf,6iy 4z gk 3ovd+ elw)c*2fquids?

  As the speed of a moving fluid increaseswdvk -l gwu)g.9 e2edva0yx40, the pressure in the fluid

  Water flows through a pipe. The di.g)*v1 yb zsframeter of the pipe at point B is larger than at point A. Where is the water pressure greatest) f* vbr1ygs.z?

  When you blow some air above a p r z(6pg.y-lpxaper strip, the paper rises. This is because

  A sky diver falls through the air at t0g+h cri09ijrerminal velocity. The force of air resistance jh9 ci0+gri0ron him is

  Two Styrofoam balls, of radii R and 2Rfi ou7a,y-8bc ,us(ym, are released simultaneously from a tall tower. Which will reach the ground firsf8u imsy,u7bc-o, a(y t?

  When a small spherical rock of radius r falls through water, it experieogtv 3 ) 66o7gfvxo +zi.p3moinces a drag force xp3vg6ivo mgtf367.o ozi)o+$F=arv$, 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 na agus5 ho., kgm6c8yc;;m 1pmjrrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in thmcmu gg.cy18 sja,p 5k; om;h6e flow rate?

  Two horizontal pipes are the same length, but pipe B has twice o8obmu i6vf83 the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the ifv88ou o 36bmsame 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 diameter/tf9 *no xhplffr;a: ;, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure diff pox 9 ht;/far;fln:*ference 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 tastes greasy. This "greasy" taste se6o 8 iozh/a i/o(jysb(ems to be associated with oil spreading out all over the 6sohj/z ia( (oi /b8oysurface 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, thwv)*8zsd/ ks,r,dqm0r d k3 zbe water rises to a height h. If the diameter were half as great, how high would thz),drs83/ k,r0kbz vsd*dq m we water rise?

  Certain insects, such as the water bug, are sufficiently lightweight thatlpu 2cn4ge8 7is7 ,.mo2gynmd they can run on top of water without breaking the surface tension. Water bug A has weight W. Wateriodp. ,24g 8ul s2ynn77g mmce 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 sufficiently lightweight that the.(glgb o282zz./v)aod gieb gy 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. Whz/z.b(g 2b)dlv.ga82goego iat is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3t1ku2t ) dmzxrhy -9m5.00 cm x 4.00 cm has a mass of 30.0 g. What is its density ymu9-2z5rtdt)hkx1m ?

  A liquid has a specific gravity of 0.357. Wj ,tui653bhsihat is its density?

  A brick weighs 50.0 N, and measures 3a+zz8f-ougj eou:3i ; 0.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal surfacf+a8o:o z3 j;uguiz-ee?

  A person weighing 900 N is standing on snowshoes. Each snowscr fo +,k6k;bjhoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine with aocg0 a+vedv /y i4wnw5n19x0stand at a depth of 120.0 m in the o1n0oc i5 /90 gweyanvd+wva4xcean?

  A circular window of 30 cm dvd ktjdvr; 4k7i; s. 8*snn3tdiameter in a submarine can withstand a maximum force o 7i3s tjtkk4sd dnd8v*n;rv ;.f $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure if th. vx 4s thval)3wfct x1h +4iocp73kb9e absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below they0,jt kklso*cj8; g l+ surface of sea? (The density of seawatstk,l ; jj+lky*cog08er is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the 55i:iqme,6p/ 5eh ;a3t u k,cknwzpwj surface of sea? (The density o5q whwjke,m5cu 3app /t5i,nie;:z6 kf seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of+q0;:ttes qc d a hydraulic machine. The small piston h s tqecdtq+;:0as 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 haswfxrcyaaww 8*1 t8i-)26ngd m a radius of 5.0 cm and the large pisn28yd wi atgf-1)8a*m6r c wwxton 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulicdp;o vvl983.b ss-cll2 /rtki piston. What force needs to be a -2tll.lrvs3i kpvcs o9; 8/dbpplied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic liftsdnv)w x*b(;:a x1bxd has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of 15,000 N.dx xs(:b1axw) *vdbn;
(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 wate ka9dbu7,;15gp(8hxs qve,db u u 4tsnr. What is the buoyant force of the wat9us,85;hen 4s, dudvtpq ubx( 1gak7ber?

  An object has a volume ofkq)h2wt: ;p;(k uydfz $4.0 \; m^{3}$ 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 wco.7m 9dh w(n;ec / tpmqj0bb6ater. What is the tension i7qbjpmw6cbdenh 9/ ;0mt .o (cn the string? (The specific gravity of iron is 7.86.)

  If the density of go vj 48w)98 ax/+gushrkve ry*nld 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 sud fd dc, ld:1im2stz:1bmarine (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 ise1eo b,hoq; f( s4rz. 3sse+qn air and 6.86 N when it is immersed in water. What is the1e(ohqrs3.esz bs,;f+4 eqos specific gravity of the object?

  A container of water is placed on a scale, and the se b(o zv;j tv02pwsqskv..0 j,cale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suj 0 z evsv b2.v0,.sqp(wto;jkspended 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 m;xnn f2 l7w1mnrusg+(ass 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 ang jy;fs:kzx x7.fi+l8d diameter 2.0 cm will just barely float in water. What is itsfxjsy8g ;+7.ki: xflz mass?

  A rectangular box of negligible mass measures 5.0 m lon kbe/;ge2u/bm5n..5iorz udrh yu4x/ g, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in mg4e.n5 kobx/ h;/ri5 uyd ./ebzuru2a 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 bet)k ;l6xxx m7jfr 0os(neath the surface of the water. The weight of the displaced r k7x x;j f0(os)m6txlwater is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourt-3rtb 4vrn.jln9cm0*bz3 zphhs of its volume beneath the surface. What is the objec.3bvhzrlpnb-9 jn rc*zmt3 4 0t's density?

  A 200-N object floats with t fnu ;y,p/,ce jprxc4-hree-fourths of its volume beneath the surface of the water. What is the buoyanxupne,j;yp f,c-/4c rt force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What (ku ncz t)w/z-8ou0rp is the minimum area of the floe that wiltr8/ z(c )wu0oznp-kul 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 cmcx9-ge7 p 6dj+hlmm;g at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 wf 8e1gq 1ht*dwv+u1rh7+h2j igpa) cm/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this rehcaguij+ 1ehdvwgh)1rqf2+ w* 781 tpstriction?

  Water flows at 12 m/s in a horizont8( xays the(8j5ivdf1 al 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 drinki os*4lg: ,wfpvng fountain with 300 kPa, if t,:*lvw o s4pfghe fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the l1 z*kfnw n1522p)ucb3kg fytbottom of a water storage tank that holds water at a1l * 2b)cuknf 1 z35p2fkgtwny depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pz7c0d twy4p3tw1px8b ipe 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 k+q;f/5erwo4dcp4hz gqg2 4s take to pour 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in d;qs4 4/ cf2g p+qwzh5ogkerd4iameter? 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 artery decreased-1zw9hr5u uwa the radius by 10%. By how much would the pressure provided by the heart have-wazuw5h r 19u to be increased to maintain a constant blood flow?

  Two narrow tubes are d )rf7* v5fwagplaced in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it ri af7vr5gfwd *)se in tube B?

  The surface tension of water is 0.073 N/m. How hit:8gq ,gq)xcugh will water rise in a capillary tube of diameter 1.2 mqcx uqg8)g,:t m?

  232

  To what height would water al)v j2 a aeo6q5tnfg5qf)7ei-t 0 degree Celsius rise in a glass capillary tube with a diamet6)oq 7feeaqa)nv2-j 5g 5ft lier of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wate +,c/a)tts utur 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 i u+t,a)tus c/tn the tube?

  Consider a rectangular frame of length 0.1ju8/ h:3jytt-;)d :yasdclb d20 m and width 0.600 m with a soap film formed within its confined area. tdu d jsac8-tyjl );d y/b::h3 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 rectangsg(7tu1e6g5d np w jn-ular 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 N/m. How much work is required to move the adjustable long side so that the frame 7nutjw( s n-d15pe6ggis 12 cm square?