The three common phases of -h(lj dk/m oyire82om/ d7uf5l7b3do matter are

  Density is

  Substance A has a density/nty+08 jpz6soim:9 hq6nuwv 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 9i:j ms.foz3 /h-fafna unit of pressure?

  Consider three drinking glasses. All +r, :i6paku 9-t +yyxd.cyw ctthree 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 the6yacw9xi:- +yup , ctyk.t +dr 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 at the bottom?

  What is the difference between the pressures )1+3qaqwkc +egts9oh(k37 qsvkx j c)inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute,+f-cv l wtslleo03)cxrhbyk0hn hi( vs +,7 + pressure at the bottom of s 0,3ev c7i+h0v hn+(fkh trw+bly slx-) oc,la pool?

  You are originally 1.0 m beneath the sur. fseg/11 n ,1nqwuba7k) aqwjface of a pool. If you dive to 2.0 m beneath7wq/q11sj)un.ke wg an1,afb the surface, what happens to the absolute pressure on you?

State Pascal's principle.q*)bp5g:du 7z) i9qrcb -zvfg

State Archimedes' princi;9,*g(tsfmbv rx ddj4ui 4:t hple.

  $50 \; cm^{3}$ 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 7bxr o,jnlwj (utk2l,82*lduof constant density, what happens to the buoyant force 7 *,odn8lu2tljlrjwb u k,2x(on it?

  Salt water has greater density than fresh a1hs*mbwn3ij o 8,p-uwater. A boat floats in both fresh water and in salt water. Where is -,amnwjp1b*s oh3i 8uthe buoyant force greater on the boat?

  Salt water is more dense than fresh water. A shi nmd0mgd63,ygh r l49/tw6kqip floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced iqldt k 0mr9gnim6y,4 w3 /6gdhn the salt water is

  A steel ball sinks in water but floats in a pool of mercury. Where is the buoyaw; sbsy3o7g(lbfs9 -pnt force o;wp(o-s 9b s7l3bs gyfn the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-x38qbhsgzw3e *0ry e13l+ iby5 mdk/skg piece of lead. Which has the greatek5wdbybm ses* i +lr3e3 g 8/h3x0zq1yr buoyant force on it?

  A piece of iron rests on top of a piece of wood floatinjn(a5 /uabpt-)h-mhsg in a bathtub. If the iron is removed from the wood, what happens to the water level in the tub n-5(a/phha)bm- tjus?

  A piece of wood is floating in a bathtub. A second piece of wood sit8 mhih(,yy r9w/s,kon ay/oa1s 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 the water level in the y/m(nay1oory/a 8w, ih hk9,s tub?

  Water flows through a pipe. The diameter of the pipe at point B is larg4/j :nt w-sg::golm) sf 4pckx)olq6der than at point A. Wgo d-kgmc:o/jp4t)6 fl4w) :xlns:s qhere is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice ynyuvq2wb c o0wj9/r(t)4ji 6 its original radius, what is the jy9ow u(w0 )/qvty6r2cb ji 4nflow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. rt6k n5) ruuph3+:yh70ki uuuIf the pipe narrows to half its original radius, what is the flow sp5:y 60krhi)n hpuu ku r7+uut3eed in the narrower section?

State Bernoulli's pr3poo fzp)i/ba82zv-:bskw . pinciple.

  Which one of the following is associated with the law of conseg9:sxg er;i 3,o04y sv/nn096pvyx 4zrnyqwfrvation of energy iyyn 6g sqngf 4wn0;:v9,pxxz3 v0sir/yr94 eon fluids?

  As the speed of a moving fluid increases, the pressure in the fluidn 6wi b:rsk:2c

  Water flows through a pipe. The diama/.i voz gv:84: sdgozeter of the pipe at point B is larger than at point A. Where is the waz8vzos.:d g a:vo /4igter pressure greatest?

  When you blow some air above a paper strip, the paper rises. T +an u1.nv*fpilcn(:(tzgs l/his is because

  A sky diver falls through the *)iux- xt jz*fn:d0dy air at terminal velocity. The force of air resisty*d:-*u xtndfj x)z0iance on him is

  Two Styrofoam balls, of radii R and 2R, a :ovoo78 (bcxn/9sztmre released simultaneously from a tall tower. Which will reach the ground fir(7sc: bmotnoxo 8v/z9st?

  When a small spherical rock of radius r falls through watyo, fdm9pw4 0eer, it experiences a drag force pweo 0 ,9d4ymf$F=arv$, 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 e uejmm-m65z 0lxf ost1 d3jf:3ffect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the qmu 3lo6j:sj0fzm 1 m53texf-duantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same lenxn2mhm7dtih5 hi7q;b 6fv)h* gth, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressumd6ihhm5i*b7) qhvx2;7n thf re 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, bt3.kzo a4aybc0)bv l,ut pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the ),a c.yt4b zo03aklb vlengths 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 :obw u ,snm85(mpnsa z. )fj /r:wsx+bseems 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 reba+ fjs/xzw b,s:sm ):umwn5 pro8 (n.adily explained in terms of

  When a tube of diameter d is placed in wa;y c aw8) td,knd3)sknter, the water rises to a height h. If the diameter were half as great, how high wou ,ad t3knwcns8y;k))d ld the water rise?

  Certain insects, such as thyih w 5i: ;ru*kug8gk1e water bug, 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, twkuih:w5;gg*8r iu 1ky ice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightweighb ibcn.a4hf0( t 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. Nowf(nac0ib b4h . 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 diu soevw 8rp13y.+2jbnmensions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. Whpno8v3byru es2+. 1wj at is its density?

  A liquid has a specific gravity of 0.357. What is i-qyknhd+4 t-rts density?

  A brick weighs 50.0 k/m2p( : p4z bhsnq),prh gx7rN, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure r/24grp7z:pb xp nmh hsk,q) (it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has arecucw54r)jq.uv 1n1 bda $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a dep b/*j k5wz brv(g0bdm,th of 120.0 m in the o,rm/( 5bgv d0* bwbjzkcean?

  A circular window of 30 cm diameter in a submarine can withstand a maximu /t9t9zqnucuqveh s316 g71ev m force et z6v19e3hncq svt/7guu19 qof $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure izlbsam1zob7 w ;+k r(9tl,lbnoj-6l0f the absolute pressure is 300 kPa?

  What is the gauge pressure1m,h)1xceqo ab;)h7yx tc.w j at a location 15.0 m below the surface of sea? (The density of seajq1t c;b 7xoehh.,1xac ))wmywater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressuk1jdd i1/i7j ure at a location 15.0 m below the surface of sea? (The density/ij7 j1 1dkudi of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on tstx: 6pi 8:sem;n vcw+he small piston of a hydraulic machine. The small piston h;8xsenp :cmvt6 : is+was 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 cm and the lo;0 f 3ibhpqp(arge piston has a ra 03b;q( iopfhpdius 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 hydraulic piston. What ff( zj w*4omx9b 20gj)bs4bs6vjf4f ut orce needs to be applied to a 5.0 cm diamet)(jj f9b*g4 s2 bbw6tfumjv z0s44 xofer piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and itn 8eqbkx g5)u-s7 a3d7mlkwu2s large piston has a diameter of 40 cm. The lift raises a load of 1kwu)s dbl-a x u5k783e mng7q25,000 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 thi gk)aw8n 2em/2.jg btw3b2 qhe buoyant force of the wate228/3h kjab)m q2teni. gww gbr?

  An object has a volume of cex48m2:b1tt 6eukp gwbs *,k$4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported z anj4pz8(,npby a string while submerged in wate z,( p4npz8jnar. What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is l0 /3wzniy ar7l. u1ou$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (dej)v,bwmtk ag )08tz *dnsity = $7.8 \times 10^3 \; kg/m^{3}$) 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 immerse7ku8h t s7k-zzc,s34g9yxgk td in water. Whatgkg8u4-cs 7kzhz, t 9y7tskx3 is the specific gravity of the object?

  A container of water is placed on a p8fuvalo *.gn6s0 ; z/)ab7cd:rntsuscale, and the scale reads 120 g. Now a 20-g piece o;svgt fl/)nbsr:cu0 a6.uo a*npz87 df 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 de14 ugg ee.dj;9 ;tuag/brz/ljnsity 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 ciq.gbv eed, d/i3 v5;tm will just barely float in water. What is its masetd53 dgq iveb.v;,i/s?

  A rectangular box of negligible mass measures 5.0 m long, 14q 8j n1slh6g bvapq,1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a lakjbh ag,s4l161q8 qnpv e?

  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 0odno 485yyp aabokqir 82s,4 the water. The weight of the displacedooi0konay, q4d8 pr4 8by as52 water is 2000 N. What is the weight of the object?

  A solid object floats b6 ),mmq: yejvin water with three-fourths of its volume beneath the surface6yjev b,mq) :m. What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surface swdbc8 veg/.b/c4z / qof the watzbq w/c.ge 4bdcs/8/ver. What is the buoyant force on the object?

  A polar bear of mass 200 kg sn xcrh7u v5nihxr0+8895 fs bjtands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.sru xx8h+n 8f5n vhj05ci7r9b

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the flqk96 kzu(e5djow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is ,c/6k1/ s3ahkneific a 2.0 cm diameter restriction in tcf ekian,3kih/1cs / 6he line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressqw )) yuhe +eofhee(-6ure 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 fg *;zh; z*tkoq y:)h1wor s(pyountain with 300r1kytsp;g hqw(:z)h o;* *oz y kPa, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a l,c0 9 j (zknotvuhq(1water storage tank that holds water at a depth of 15 m. At what rate will water flow o0otk9(jn(, qcvz1 hluut of the hole?

  Water flows through a horizontal pipe of cross-sectional arengbl hy,y 1f 2z 5za4syk6gl 1oz3t41ea $10.0 \; cm^{2}$ 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 vis)q gn4dw;k xtk lr5v7i2:(db 3re9xvs cosity of 0.20 Pa-s. How 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 neg)ns d4v2txr3 vrel7dx(ib 9 gwkk:5q;lect any drag effects due to the upper part of the funnel.

  Suppose that the build-up of fatt0 7 9*trg5c pldvy6mxty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by tpg7ctm *vd5lx0 6y rt9he heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a po a8n;i f 963uxcox1waan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it 86cwixx 1aaoof;nu93rise in tube B?

  The surface tension of water is 0.073 N/m. How h;u)yc:3u cld u 9x0yyligh will water rise in a capillary 3:)ccuyu 9 0y;duxl lytube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsiusk)b(: in:pc;a:p /regg ub:wi rise in a glass capillary tube with a diacpgbgknw)p :;a:ir:(ei /u :bmeter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, antnjl3 dn; ha9oo ;9hb)d the water rises in the tube to 4.0 cm above the level of the pan. The surface tension in the h;ato3 odlh9n9jbn;)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 wircy+ae2ggim 21u,wgs5k 0 1jadth 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 fo1 uwcgaymjg25i gks21 ,0re+arce does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cmt)d o a4+,xcfs1aqh3j, and is built in such a way that one of the longer sides can be moved without bursting the soap film contai 3xdqjat+f h)41,ca soned 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?