The three common phaiq9fqy qq44v( ses of matter are

  Density is

  Substance A has a dens ete: m+kbyb;0ye)wm 9ity 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 pd3+(8 lr ls.ozugby1z ;lg v,unit of pressure?

  Consider three drinking glasses. All three have therxcae62vn- a2g8 ;otj 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 eavnar86; 2g2o-tcj xC 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 outside a ti.b*yp j 1uoeo2;pab7gre called?

  When atmospheric pressure changes, what happens to the absolute press1 hysnx t-ob;zyf hsa44,gc 2,ure at the bottom of a poolh, szsoh,xcy 2g1 n4yt4a-;f b?

  You are originally 1.0 m beneath the surface of a pool. If you mlsvdkmz gtu5)41) w2dive to 2.0 m beneath the surface, what happens to the absolute pressure on4v zw)2ld1t sg 5mkm)u you?

State Pascal's princit ,;zfl/r2rx aple.

State Archimedes' principle.6a)xdph jd9rf2bng9j3r;k7h

  $50 \; cm^{3}$ 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 denwwr0wu9w 6:r: 8 imlrwsity, what happens to the rlrrw 8ww:wuw9 6m:i0buoyant force on it?

  Salt water has greater density than fresh water. i-zf: ) -n f+epce/ r) 7rhcupm;bin;z A boat floats in both fresh water and in salt water. Where is the buoyant force g ppcz+fmi ;chr-u- n7/f ;):rie)bznereater on the boat?

  Salt water is more dense than fresh water. A ship floats iok2aq1 x0 bq+tn both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt wat1xqak2tqb + 0oer is

  A steel ball sinks in water 6g z1qjtc +oo 9.wk0bqbut floats in a pool of mercury. Where is the buoyant +qob96 .kqwj1c zot 0gforce on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a la9r (iyz6p+ o0hcv:yvr ke, right next to a 10-kg piece of lead. Which has the greater buoyant foz:9vrio+(h 6cyypr v0rce on it?

  A piece of iron rests on top of a piece of w*5uw t7ajkrjq8j1 7e -ykqv vun*5ce6ood floating in a bathtub. If the iron is removed from the wood, what happens to the water level in the j *yv56k5 t1auw *7-juvj eknqcq7er8tub?

  A piece of wood is floating in a bathtub. jtwb9xnt 5lj ) z*8+,bmpn 15hebzff0 A second piece of wood sits on top of the firs5w) +8bfmjezjb1*9lttnx nb,hfz 5p 0t piece, and 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 a pipe. The diameter of tgn/mq4 vgbck y/j;kw4r 75s v.(xw(ti+cl hk1he pipe at point B is larger than at point A. Where is the speed ihcts.75lqb+ /(g/(;nwkjk m gywvr44 xc 1kvof the water greater?

  An ideal fluid flows at wp,n)*a 6etc yy k)akhpotf zx4-82 +k12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow spep k*kykxp)oaatyh6 ftz82 +c4)-n,ewed in the wider section?

  An ideal fluid flows at 12 m/s in a7(mq anjhw4 x 4+resaf8v;w2q horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the nar(exhww fmavn 7 8jq qsa+24;4rrower section?

State Bernoulli's principle.fxdvha,vs m + ,r)c--z

  Which one of the following is associated with 8oa n0rq+ s/(6ec dhkb.i7n+jtkr 0wq the law of conservation of energy in flui.q hq+c (w +rbine0d7t/n86k sj0kroa ds?

  As the speed of a moving fluid increases, the prougmnn94 9 /ydessure in the fluid

  Water flows through a pipe. The diameter of the pipe at1xse*fz 2+jc7qr rj*d point B is larger than at point A. Where is the water pressure z*r erx*qcsf71+2 jjdgreatest?

  When you blow some air abo +u- ptou4gk/mve a paper strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The fx xrn5. g+pma(sm 8of7orce of air resistmoxg+xnmfp( 7a sr.5 8ance on him is

  Two Styrofoam balls, of y l,w8:5iemk t)n ni/sradii R and 2R, are released simultaneously from a tall tower./synl it: 5) ewnm8,ik Which will reach the ground first?

  When a small spherica+4g vdrni1d z).uuiny 8i rkin0 x356ql rock of radius r falls through water, it experiences a drag f v.yd+)i 6n0 ir3ur4z 1d8xgi qi5kunnorce $F=arv$, 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 threzat+ol8 08j 3 uqy*qjough a narrow pipe? That is, if you made a 10% change in each ofl*3t auyz 0j88oqeqj + the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pjp y,ga/ ;a*thipe B has twice the diameter of pipe A. Water undergoes vis*yht j,gp; /aacous 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 have6zw luwo08(b u 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 rate in pipe B i(u u8o l6bwz0ws Q, what is the flow rate in pipe A?

  When soup gets cold, it k7,yv2f39qbhd)w eh h often tastes greasy. This "greasy" taste 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 readily explained in terms ofeq )v7 kfwh92 d,hbhy3

  When a tube of diameter d is placed in water, the water rises to a heigq e0wu04log e-z 7ugvzq0 zi7+ht h. If the diameter were half as g0+qiouz0g7 4- vq elu0gz7ewzreat, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lb zv+vj /)zme d:pd-us (f1,lyightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Watb/e()-j syf:+dp,zmduvvz l1 er 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 suff i u5p,mft8b6wiciently 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 th5bwu 8p6ti ,mfe 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 1; zu mkh-dj5k4.00 cm has a mass of 30.0 g. What is its densityuhmdkj z5; 1k-?

  A liquid has a specific gra+ qp/ilcetona0y0 pmke/ i/( 6vity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 1(oc7 .ei insmcm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal sur(noc s1ie.m i7face?

  A person weighing 900 N is standing on snowshoes. Ear f6h ,cpn 2(0dthfg9rch snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submari)j4vpj0.4u gvc3 cs2j diej 4mne withstand at a depth of 120.0 m in the oeji jvps m4 cjdj3.gu424vc0)cean?

  A circular window of 30 cm diameter in a submarine can withs uxpsa7ny4(om7 zkh2x p 9q.9dtand a maximum force ofqphzx.d7 7sk99m(o2p x 4uyna $5.20 \times 10^{5} \; N$. 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 absolute pressure isrka :bv586iqc 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface ofejbs64+y xr5geq kd11d.vtvd b(9 gy. sea? (The density of seawaterjyk1v(. sxyv.4b5g br +ed1egd69 qdt is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a ng r*pii6vnv:9 u l x3p:/nwx+location 15.0 m below the surface of sea? (The denw6vx9g+lnpnu r:v:3 /nxii*p sity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits 5bj7bh u(r) oj;y7 dpnon the small piston of a hydraulic machine. The small piston has area y) j b5b77j(puor ndh;$2.0 \; cm^{2}$. 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 7n sgl77t)m9aheljfga) 6te) and the large piston has a ra7sml f7tl h n)a6 g7)a9je)egtdius 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 hydraep pmn;+:r oqhz8yrybj: b*;f,la5w .ulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish this?pr;hbr l,w ;:j nya+f: 5eymqz*o.b8p

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its large pi/c xeha*/ uy .4*ha3a* pwcxzhston has a diameter of 40 cm. The lift raises a load of 15,0p*xca e./c a hw4*y3ua*hx /zh00 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 b;8whacj;ai hr i h;4(kuoyant force of (a4wj ; 8ci;;hi rhahkthe water?

  An object has a volume of 4oxx c vv5:j+4w83c dvw)-x/avvhfwq $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a ol 3ckvjr6rs2e+ 7p5 hstring while submerged in water. What is the tension i6+rpreh s7o5vc2j3k l n the string? (The specific gravity of iron is 7.86.)

  If the density of go25tak/x0v*k: okovb npk(z 8eld 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 submarine (density =y de7)9rc72w) cw4yeh8gk9qz*hbsnq1p. r hw $7.8 \times 10^3 \; kg/m^{3}$) 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 when it is immersed in wkw6n e.un+-vhonno// soj 32rw 4h l)aater. What is the specific gravityw r3 vaou -khw/s264en nj+)n/ h.lono of the object?

  A container of water is placed)a;+,wumr4 smto/s mxox,uh - 5cznx6 on 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 lowered i)6c5u4o- rh;o ,/,ms xawx mm sx+ntzunto 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 , -e76dcq mv9swu;ohtkg 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;et/q8 u zqi kzidt463 length 12 cm and diameter 2.0 cm will just barely float in water. What is its mass?z qii4t/ 8qkt36z;ude

  A rectangular box of ny)gj47th,e pp+rf z+ negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loadezg4e jy 7fh r+,np)+tpd 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 the surface of the water.woc+5b*x5kwlj:s jk* The weight of the displaced water is 2000o+ *xscj5kj kw*b5:lw N. What is the weight of the object?

  A solid object floats in wy 660 1eug uqmaf2n;tdy9p8 goater with three-fourths of its volume beneath the surface. What is the object'a1ufq;0696y2dg8gpun et moy s density?

  A 200-N object floats with three-fourths of its volume beneath the surface oy .3 )cki9djri 92ua pi6gjtc,4rbe3jf the water. What is the buogru.j9dji b2cpicy,jiea 3r6k)943tyant force on the object?

  A polar bear of mass 200 nst;4wmf:+p ;s qu wdrvzf* :*kg stands on an ice floe 100 cm thick. What is the minimum ar *puds*4q+;srmffvwz ;t::w nea of the floe that will 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 cm at 2.0 m/s. Find the/d5f8eekkk z7 flow rate.

  Liquid flows through a 4.0 cm diameter pipe at b-.:n4) hn2m8svvba3obqws o1.0 m/s. There is a 2.0 cm diameter r8a4nbv:ms.w)sb-ov3h2qb no estriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pre io*q 6q zd5w8i5naqi8q yj1z.ssure 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 dorexkp e z 6a26q*s (b90k5onenes it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.z nko0*9s5e2nk(exp 66areqb0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water sta/k.kd 40d xstorage tank that holds water at a depth of 15 m. d/kadtk04 sx. At what rate will water flow out of the hole?

  Water flows through a horizontal pi ;fo 8r3n9awgype 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 take to pour 4.ph3u:orba6 8e q,wo bcil4 n8.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume the 6pb 884hnqw :l,b oai .rco3eusurface 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 decree /,9u6(0vxmupcfb f eased the radius by 10%. By how much would the pressure provided by the heart hfex p vmb9(0uufce,6/ave to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan- vt65czl )x1v p*dsur of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how hv u6xlzvrc p)t-1*d 5sigh will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will hlk2)ur7 ocy(o*d)u kwater rise in a capillary tube of diacrlku) )uho d*k 72(oymeter 1.2 mm?

  232

  To what height would water at 0 degree Celsiu 0vd ,shdw8gpsi)/b6 bkrkb1(s rise in a glass capillary tube withv0/,dbb(srbp) sgh k kw6i8d 1 a diameter of
0.50 mm?

  A narrow tube is placed vertically b r*xb d: i*wh3*9vsmiin 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 valuei3v *im w**xbs9r:b hd by the addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of leng.ljlflco ;;au :ae- d*th 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is ;j*l:l eu- ad acf.;ol0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangu/ fh1-z a(.qr jmkt 4t/u0lgzular 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 Ng/4kzu/. r0(fq at1jmlzt- h u/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?