The three common phases rr4z:d,l+ g rsi*/a ptof matter are

  Density is

  Substance A has a density of z-k ,kfq7eu+w $3.0 \; g/cm^{3}$ 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 followinhugr, wwycj-; la;/; rve9b- bg is not a unit of pressure?

  Consider three drinking glasses. All three have the same area base,d6 xb rp1zb/ce. ,el1p 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. elzcbp,rp11x6be/d 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 outside a t6)-q;zac/g-(fk/:zsn1f0 gxgt aop pa2 um ts ire called?

  When atmospheric pressure changes, what happens to the cwj.3 ,yrb3gnt pq s04absolute pressure at the bottomtwsq3,0 cjrypb g34 n. of a pool?

  You are originally 1.0 m beneath the surface( pkt -lfk7+zxc zek57 of a pool. If you dive to 2.0 m beneat - plz7zkkxcte+f5(7k h the surface, what happens to the absolute pressure on you?

State Pascal's princi w 6z)c ws5(s()ftbgqvple.

State Archimedes' principlp( djk-p7a (oye.

  $50 \; cm^{3}$ 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 happ 2kng7. aba2pnlagi5;ens to the buoyankib.gn;2a7g 5laa np2 t force on it?

  Salt water has greater density than fresh water. A boat floats in bo 7zt xqmzf .tqoy()c dp3ktg-m ,+/yx(th fresh water and in salt water. Where i gz/o( m.tqm) ty,x+( kdt q3c7zfxyp-s the buoyant force greater on the boat?

  Salt water is more dense cqmml8 , e8d nvv1*t;q 8pycy6than fresh water. A ship floats in both fresh water and salt water. Compared to the fresvc ql8m;8,d1mn 6y pq8*cvety h water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where isb , ,u*t97ng rtwchy.s the buoyant force o,t b9ygcsh* nr,tu.w7n the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right nex0x5d *dsahgoo.l:lqd , v82nrt to a 10-kg piece of lead. Which hanll,ao5 dd8o*02 .q: xsh drvgs the greater buoyant force on it?

  A piece of iron rests on top of a piece of wo,y9/p ,n pndylod floating in a bathtub. If the iron is removed from the wood, what happens to the water level in thpndyl y,p/,9 ne tub?

  A piece of wood is floating in a bat/jf/qd +z ,jushtub. A second piece of 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 thj /qdsjuf/ z,+e water level in the tub?

  Water flows through a pipe. The diamo0g.;y 9dfaki eter of the pipe at point B is larger than at point A. Where is the speed of the wateki90;dag .yfor greater?

  An ideal fluid flows at 12 m/s in a horizo,bno)d9ct+4t pg6fcw s 1 hl6nntal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider sects+6n 4c9 g 6ct bhonfpd)t1wl,ion?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to halfkrol5: hty 0gt2jwg z c9:s/8h its original radius, g2t jhg:5 cwz8shl/r: 0y9 kotwhat is the flow speed in the narrower section?

State Bernoulli's prin7ro-fnqg/ oh)dg)s j6 ciple.

  Which one of the following is associated with the alq4au8zlggvb +, ,e4z6fiu3 5 q5cgk law of conservation of energy in flg 4 bq6,vqg45kefiz uca5 8z,+ ua3lgluids?

  As the speed of a moving fluid increa mc u )9jle-.saa:kys.ses, the pressure in the fluid

  Water flows through a pipe. 2so 1 oso,h1fnn/oov 6 The diameter of the pipe at point B is larger than at point A. Where is the water press,os s6 o1hoo/2nn1vofure greatest?

  When you blow some air above a paper strip, the paper rises. Ttx4lu 6)d i8;l6o6hu.afci a -tvcm9hhis is because

  A sky diver falls thrgj-jf(p t ,r k 5/z6kqyrrkwf. -8)tj wq8mi6vough the air at terminal velocity. The force of air resistance on kr65/wv)6trz,wjk-(fkf8p -j gqijrq. my t8him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously frj wj5m9q :r *nw8bh;efom a tall tower. Which will reach tjw:rh9n* q;bfj 8 we5mhe ground first?

  When a small spherical rock of radius r falls through water, it experience uvz 4m 5/k-a:pw)z,tqk 6bvrts a dra/:)am6 rukzz5vt w4,t vpb -qkg 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 v gel .ts+ j1.rkm s8y4tw*j)opipe? That is, if you made a 10% change in each of the quantities below, which *8kojetsgm .jv+ytw )s41 r.lwould cause the greatest change in the flow rate?

  Two horizontal pipes are the same lhp 0iv1+ s uz40j)nidu:wdr:nength, 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 thzi: uh psn ddiwj0:rv)+ n1u40e 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 b lr:aqd/4 u)sis twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the sa:4/r)lbq dusa me 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 tastes greasy. This "m*xl +vzs o5g weddqt:250 k)fgreasy" taste seems to be associated with oil spread:*k5tdd2l5zqx v+wgomf ) se 0ing out all 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 water, the wati6rym o ,6t(lzer rises to a height h. If the diameter were half as great, how high would the wm6r 6tyl, i(ozater rise?

  Certain insects, such as the water bug, are sufficiently lightweight that q, 9y.qhstvr4 )8dgukthey can run on top of water witho qyr)k4,8stugq.9 hdvut 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. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficientl f6k0 3zty8+dbfq:ll iy lightweight 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. Thky+zlf lqd 6b0t8f:3iat 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 has a mass of 30vy;0aq;dpa c *.0 g. What ;* a;a0yd qpcvis its density?

  A liquid has a specific gravity of 0.357. Wha:+zplri ( ol f/78wjdut is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is thf2b 6u-rkx y1he maximum pressur6xhur-k2b 1f ye it can exert on a horizontal surface?

  A person weighing 900 N is standing ycdq +y7+7-e87kf wxjb+fdy o on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstan za*02lx,vgmnkl8s3ud at a depth of 120.0 m in tll,2mkn *v x083saugzhe ocean?

  A circular window of 30 cm diameter in a submarine can withstanyrhwb 0vpfdmr/7a5 i 0r1k75md a maximum force of r71ab 05rhf wr7i0m d5m/pyk v$5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure ifumo*go q+ ma -8mi;w0y the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? (Thef+whf-5cqh0m lb6:4qgmyk ( l2 apfm 9 density of seawater6lf k92fpy:q4h fh0 l5-a (mmqgcw+m b is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface orhyt15to5 p,mf sea? (The densit m5t5rthypo 1,y of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a qw5y y322*6*p7nb(e.hut irz mnxf ohhydraulic machine. The small piston has are7i*6z hy*2w bp3(yhqtnm.fnu x52 r eoa $2.0 \; cm^{2}$. 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 cm and the . cn xrol53d8alarge piston has a radius of 15 cm. What force must be applied on the small piston in order to lifl8 o 5xcnd.r3at a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a ,u3otdc(;ki ))p:7nlezoleu 25 cm diameter hydraulic piston. What force needs to be applied l)u(3c7oi:;o e zt,kne)dplu to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8b-g- awpvn 7a ;;gh5z ggpv(uyk-q,* k.0 cm, and its large piston has a diameter o- qhv-(vk z p*ygg7anup ;,5bgwg; -akf 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 forc.9n+pr95yij b;2 e r qb2a)g qtcxp2dt52rgp nbetb 2trq.qyp9ia+ c9)d x;j2e of the water?

  An object has a volumn dg aq1etjrh+7y,o 2)e of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid g5 e-48l(uvantp nl mv1 fg1v9iron is supported by a string while submerged in water. What is the tension in the string? (The specific grav-g5v 1l4v(1l ft eu9amgnnvp8ity of iron is 7.86.)

  If the density of gold i*i pw7ut32k twndz)n,s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density = w9 5-ncicv- ,x(ebytp)gz6uj $7.8 \times 10^3 \; kg/m^{3}$) 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 whe ;f (s-8u:aiytvddzy +n it is immersed in water. Wv-ud 8 fz;sy:ty +da(ihat is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Nrc4,1pp2 qjgkg .p/i bow a 20-g piece of copper (specific gravity = 8.kqpp2b ri,1pj gg./4c9) 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 o4 3 omyd,e 4;sahn3zlpf 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 q3gvopaq 89z(p,go :h b ,t)rtdiameter 2.0 cm will just barely float in water. W , (:ao t8z)t9qghopvbr,gqp 3hat is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide,qsw3f w /n-1yh and 0.50 m high. How many kilogryh w-f nsw1q/3ams 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 volume beneath thz2;c:f4ezsji6- tb)vgdu v ybm9 i r-are)+n6e surface of the water. The weight of the displacezzrjs4uybb i6tvd: ))ier-;9 6ag+v me n-f2cd water is 2000 N. What is the weight of the object?

  A solid object floats in waterudv k-; camz7 ap11y6r with three-fourths of its volume beneath the surface. What is the object's de1y zdpka16;- u vrmc7ansity?

  A 200-N object floats with tulm*-- 0qqtf nw5y.fq hree-fourths of its volume beneath the surface of the water. What i.m-fq l0-qntf*uq y w5s the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is th+kpa :k :qv3she minimum area of the floe that will just support the bear in saltwater of specific gra::qhpk 3+skva vity 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 rat14ouwr9u , yiq+ n p77.fecthce.

  Liquid flows through a 4.0 cm diameter pipe at az cjp:-rivl8z+2rg /0he4j j1.0 m/s. There is a 2.0 cm diameter restriction i-vz e jj 80zjlap:gh4c2/irr+n the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizont6b) 2k9b hjqggal 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 drykp: bg 0nh c*8(dvk+finking fountain with 300 kPa, if th 8y(kv*0d gf+ cbnph:ke 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 hol*,g8jlwei) 568d wt9kivm iords water at a depth of 15 m. At what ratev59w6wkjgm)ir d8 o*8i eilt, will water flow out of the hole?

  Water flows through a horizus :t(pt 0+8 hvn0ddazq( z5onontal 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 takgy.vjx(1syyap :cpaj8d* :- ue 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 drag effects due t ycagudy(1-x8 *y sjp:pja.v:o the upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of ,s4rtstl, ;c7o 1abf man artery decreased the radius by 10%.tob 4m1r ,ast7 cfs,;l By how much would the pressure provided by the heart 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 diam 1uw8l;a6kuo9s32 qpw 3+p/ miwg zueieter of tube B. If water rises 24 cm in tube A, howap+qw2o96 w;u ulipg/k us iz31me 83w high will it rise in tube B?

  The surface tension of water is 0.073 N/m. Ho,3wq .ljwex1li;1b lxu66 p ,zppmy-uw high will water rise in a capillary tul3-,1wxq61 uyzplw.,i eumb 6 ;jpxlpbe of diameter 1.2 mm?

  232

  To what height would water at 0 3dqph,xyvtuj3fh)wu ;. 3l5p degree Celsius rise in a glass capillary tube with fy.hq )5uljt ph;dwx33,p v3ua diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in the5cfu2 rx3roh* tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowered to 52uf3ch *rox rone-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 0.600lc6x9-n6q13piodrx v m with a soap film formr6q3-vxpx 61l9inocded 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 12 cm and width 5 cm, an7 ,5bhv6d7u hpv nq1ox0p2dixd is built in such a way that one of the longer sides can be moved without bursting the soap film contained i0np7hx5v p7d1 xou vb62h d,iqn 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?