The three common phases of matter areeh* i d.ozj pnfys:0*8gu,s7 f

  Density is

  Substance A has a dens0 1he.an c7vqsity 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 : pq2otyms6 d6/sewr(of pressure?

  Consider three drinking gll zoljg55 8hi3asses. All 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 pressure l5 zhijgo8l 53at the bottom?

  What is the difference between the pressures inside and outgq0z*xgyk/ tpoha,; fyo*- v2side a tire called?

  When atmospheric pressure changes, what happens to the absolute pressurevpj5(cz 5tkbb9-d-h+f cw+fc at the b b +tc9 ck-hd-b5(fzvcf pw+5jottom of a pool?

  You are originally 1.0 m beneath the spbr.uwhux+ .- j7z+ faurface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute presshu -pb7uzfwar+x.j +. ure on you?

State Pascal's principlexw 0 x z66os9b,v,nsffir cq s6ec-1i*.

State Archimedes' pr xw)h3v ( 3yb ar8ku/adgqml8(inciple.

  $50 \; cm^{3}$ 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 wat (08xid8y. xhxt*mqkrj0,n puer of constant density, what happens to the buoyant force m, i 0x8yxxnprtj0kh.dq8 u(*on it?

  Salt water has greater density than fresh water. A boat floats in botrz w*;3,m bol4 o.dj)cxechw(h fresh water and in sawj;x zoe,)ohm cd(c3w 4.*lbr lt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresb k52tm,nq o0th water. A ship floats in both fresh water and salt water. Compared to the fresh water, the vook5 0,qnbmtt2lume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pooi m6i;7mncw0 zd+jm*al of mercury. Where is the buoyant force on thea d 06;cwni im7jzm*+m ball greater?

  A 10-kg piece of aluminum sisx ,90ezdxhvook42* a0(xckfts at the bottom of a lake, right next to a 10-kg piece ofc9*v k20 0e zax,dokxx h4s(of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. Istve 8 nujfg35)r-m3n hol3(qf the iron is removed from the wood, what happens to the water level in thfr qgn)es 5lou m-j33(nhv83te tub?

  A piece of wood is floating in a bathtub. 49xgif j.8-bjrj i(e dA second piece of wood sits on top of the first piece, and does not touch the water. If the top pieced8 4ijj.i-e9rb( gfjx is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe.g+.dj5(cm,zef, oyuv h -zvg d,u f9.i The diameter of the pipe at point B is larger than at point A. Where is the speed of the water greaterd(+i g vj,.-.hu9,z yf vuz,em5ogf dc?

  An ideal fluid flows at 12 m/s in a horizontal pipe.-s:68 ck,pkc k*tjgsfa0st +t If the pipe widens to twice its original ra*cck,s- skg fttt6:pk j+80asdius, what is the flow speed in the wider section?

  An ideal fluid flows at58a oagbwxi+s1fnt4l4p 2 pr7 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is th7f4 rt51sba8g2oxwp4a ipn+ le flow speed in the narrower section?

State Bernoulli's priw1ppp:** k4 runubn* tnciple.

  Which one of the following is associated with the law of conservation of energli9eol0/xzj opvwd fr t..g( av(ybk9 *3*.ohy in flita 3. (vv*fblp9 o jk..el0gx ozwd9/*r(oh yuids?

  As the speed of a moving fluid increases, the pressure in the fl;cw c)sjm .d yf8p/83 yo8ksesuid

  Water flows through a pipe. The dizv) x,jmnznkp9c k7 ,m44imlfv r8:a1ameter of the pipe at point B is larger than at point A. Where is l4x1c9r m: z kjvpn,n)m78fvik4a , mzthe water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is*djs 6;0n6ulb.*rlf/x n gefm because

  A sky diver falls through the air at 1ak+rcyg0q (v +u1v ucterminal velocity. The force of air resistance on hu v0r+ucak1g+q (yc1vim is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously frokbl;k jw* m(o.m a tall tbmk l.kwj(*;oower. Which will reach the ground first?

  When a small spherical rock of radius r falls through water, 5 yt4 z/xi5z1a sv*dq/k4q2wr l 0hjivit experiences a drd hv 4 25iwq/z/41isxa5tkqzy*lj 0vrag 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 of fluid through a narrow 0 de+:ihyi xeqkqa:r.2fs60i pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in the flowk 0.iqx:0q+e6h:se dfiai2r y rate?

  Two horizontal pipes are the same length,uzz17pv: udg/ tk9u:t but pipe B has twice the diameter of pipe A. Water undez:ut 19 uvdgpt7k uz/:rgoes 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 the flow rate in pipe B?

  Two horizontal pipes hav(5bkjpm c 1ib-e the same diameter, 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 ratb(p1 mjk5-b cie in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "glt+kjn5 4vu :*j, wgcwreasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To u+gjw 4l5v:tu ckjn* ,ws "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises to a height hxp; z0h+vpa8b 3 i7k troby2u-. If the diameter were half as great, how high r b ; k-8zuvhi02+ba3opt7xpy would the water rise?

  Certain insects, such as the water bughizr 2rno ;b 0m:9zqsb4)xh*g, 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 twice as long, twice as n :mb0qi)rxbz294*gzr; hohs wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are s-. pjeio c,9k5g0hde hufficiently lightweight that they can run on top of water without breaking the surface tension. This is possible becad h95g,c o0e-h.eijpk use 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 4.00 cm has62pqdnd3/:ttbie 6b u a mass of 30.0 g. What is its densie/tbb p2qni udd 63:6tty?

  A liquid has a specific gravity of 0.357. What is its/ru(zeaw -mq o7y09xy density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Whc-4 )ye te.g pvby.)khat is the maximum pressure it can exert on a hor).cpv-. byge)hye k4tizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowsh; +ar*qt9hwkc8. cdkn oe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a8 8:8, cemilg dxo,fdv submarine withstand at a depth of 120.0 m in the ocean? g8mev,8:fd8oid , clx

  A circular window of 30 cm diameter in a submarine can withkr )m;d:mp(f bstand a maximum force pf(:kmd )bmr ;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 pressure if t dtfcke yy , *oq.xc-y01x;j6khe absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? somme9am7j uerd/0 6;(The density of o dm/sea rmme7 j09u6;seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surf r5knuaw 44r8hace of sea? (The de4h n4a5urrk8 wnsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pistoidql3 f2s w m;j*c,qbd:t/w3y n has area /ysjdwc b3fm ,wtq;liq:2 *3d$2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage k /8ze*xbuyuk/bu * xwj*2urrl3 87mrlift, 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 o* 2*8r/kuk*zeubu3 bmrx ju8xlw/7 ry rder to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle i, efcuu/oj9a-3 d6zwes to be lifted by a 25 cm diameter hydraulic piston. What fouueoc z96-/wd3,fe jarce needs to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its lfr )whs8bm ;,xarge piston has8;bsxw m fr,h) 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 wate/o joir -jj5hz1l/1e kr. What is the buoyant force of the j1j io1/-5hj o/k rlezwater?

  An object has a volum/ ;fog(0hrqz te 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 ws-+jcfjdd 94g hile submerged in water. What is the tension in the string? (The specific gravity of irog4cj +jd df-s9n is 7.86.)

  If the density of gold ob(0a8bui (h nis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (cdf p 1b(fx r-v7 vf94zbfgf5r4:nhf5l.qb v8density = $7.8 \times 10^3 \; kg/m^{3}$) 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 a0 k jncxy.(*cund 6.86 N when it is immersed in water. Wc(k.0c yj*nux hat is the specific gravity of the object?

  A container of water is placed on a scale, and tqzixim5zvc610 p**ge/ +n . j*xpscwihe scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from ai wx q x0g*+m zn 1/pi56.jczv**cspie 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 an 5yua759ny2 tlv*xz lzd 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, 2a-5zus/ d+fta5vm+9kh6jopmb m qj 12 cm and diameter 2.0 cm will just barely float in water. What is b9,z v mom/ j2+uk6q hjams-5fd5+tap its mass?

  A rectangular box of negligible mass m;nd0 3l2gpv jntkz- mm*5b; av ii;s8eeasures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass cdvnmiipt-l; 23 ezm jsv5 8;ba *0kn;gan 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 volume benpc4k;xc 0r d-yt8 tlgf9x80aveath the surface of the water. The weight of the d0adc 94x-l;xp0ytrfg t 88cvkisplaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the sur/o8/ kor sx(swface. What(8/ oworxss/ k is the object's density?

  A 200-N object floats with three-fourths of its volume beneath tha p:nllz h3*0ce surface of the water. What is the buoyant force on the objec:ln*0 zplahc 3t?

  A polar bear of mass 200 kg stands on an ice floe 100 cm th* icbs m99nq1rymj5.u ick. What is the minimum area of the floe that will just support the bear in salym91q si5m9c.bnj* u rtwater 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:u 8vb7g4im or m/s. Find the flow rate.

  Liquid flows through a 4.0 cm v+vg )pyb6upfqwo9 a.radfwk23 --2 c diameter pipe at 1.0 m/s. There is a 2.0 cm diame w -wu cq-3ovppa+fy 6ar9 .2gkdvf)b2ter restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a prmklvsh9 :33-v xmr p8vessure 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 akmx(6fs*+y 0y rv we5h drinking fountain with 300 kPa, ifrms (*yf yh05+vek6w x the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tam 3d5cby dss nh6hh34.nk that holds water at a depth of 15 m. At what rate will wat4 s. hb3h hmsn5yc63dder flow out of the hole?

  Water flows through a horizontal pipe of cross-sectio-1sz ro 9;l i9hhr0y r-w2wvvonal 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. Ho3ufd 23 z)yw;md9fayryd u1m: 4vf3fj w 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 any d39uy3m u zyd j);fm yf:1vaff24w3rd drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of w.yzz+0q i 3bbbj9 t/van artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increasedbw9+qb0zvty.3/ j bzi to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A h./6tun a,i-i i 5w+gbffps jy9as twice the diameter of tube B. If b t igwa-n56,fp / jsyifu+i.9water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/jl2h/:;hnpl 8f xhcl+m. How high will water rise in a capillary t2h+l:p/ 8c hnl;hlxfjube of diameter 1.2 mm?

  232

  To what height would water at:hjxvkg6 73x 6vr k-ub 0 degree Celsius rise in a glass capillary tube withkrguj x:x3h6v-v 6 bk7 a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the 1 xfg lng+8xs 4jxw4i9water rises in the tube to 4.0 cm above the level of s 4 xifln4g9xg18wjx+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 vbvgv .ma86aabfo,.d:mliwsb) 1o t*k+4 yy -0.600 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 soapvbdo8:)ay*,1-+ fmyvl a g46bw.tmo iak. s vb film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, 0gg 2v0,i9uer ws),olxzs 6ri and is built in such a way that one of the longer 2l0oxis9ri0srge 6zvg, ,wu) 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 is 12 cm square?