The three common phases rd)./ nxemiz bcm1jx- x,fk3:of matter are

  Density is

  Substance A has a densi(.px7aup *;e kjdfhxp6 zyyo t 1/57dity 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 prepj pdkrm. r/b 20b-r-zssure?

  Consider three drinking glasses. Alx,f + *hk-cegol three have the same area base, and all three are * o+gckh,-xfefilled 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 at the bottom?

  What is the difference between the pressures insi)n xodghff/35j e13 )kxxef2kde and outside a tire called?

  When atmospheric pressure changes, what happens to ,;j2f ja ex*qothe absolute pressure at the bott*2o qjaj,efx;om of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.hh xfzc)/cw6az g7(9k 0 m beneath the surface, what happensg9(hkf )czwxc/ha76 z to the absolute pressure on you?

State Pascal's princg 3*acp,kgus7h r22/ll ff xt3iple.

State Archimedes' principle.2d/p50 xp, pk lfsprb1

  $50 \; cm^{3}$ 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 co j;ag+*ryegi 8nstant density, what happens to the buri *+8e g;gyjaoyant force on it?

  Salt water has greater density than fresh water. A boat floats if+dz)hys j6d6 iu hs(p a1z9c)n both fresh water and in salt water. Where)(+9 dsd6syizzuj6)hp a c1 fh is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh (kt+kjq: y8bx2aet f: water and salt water. Compared to the fresh water, the volume of water displaced in tky8k bj ( t2f:txqe+:ahe salt water is

  A steel ball sinks in water but float okbaannnq22t/ab ,4a8-r*d l s in a pool of mercury. Where is the buoyant force on the 2abntl2 n,8rana -/o*qd 4akbball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, rigt6o4 i0igak xcy*/5fu s(q*sr+ ;vk iaht next to a 10-kg piece of lead.foi4c +vtgq ;kss5a *x(u y/ akri*6i0 Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floa7dcr/a-el/(pv;f nf0gb ;qc3pcx kq1ting in a bathtub. If the iron is removedcff0 ke/v7gabrc13(qpl nx -;/;qdp c from the wood, what happens to the water level in the tub?

  A piece of wood is fld(au0l 3whyih1fwes8r- dn9; oating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piehw idn8yu(s-d; wl 9era1 fh03ce is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diametfbb ;: .y8z)(vmjnnoler of the pipe at point B is larger than at point A.):lyv( b8m;nj zo. bnf Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal os7j *:et aa43mx,h nypipe. If the pipe widens to twice its original radiu37a,ao n* sxtymhe:4j s, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontj8eme 5gyj- qgr,1g c:al pipe. If the pipe narrows to half its org8:m e 1 jeqg,r-gy5cjiginal radius, what is the flow speed in the narrower section?

State Bernoulli's principl:cxz3tqpzpn 2ws,7 zrmn2)5 u e.

  Which one of the following is associated with the law of conb z9jrnos ;8k5oz 5nf8servation of energy 8n9zb8f;jsro o n5k 5zin fluids?

  As the speed of a moving fluid increases, the pressucdjj+ 6/ehiu fr ,-0pare in the fluid

  Water flows through a pipe. The diameter of the pipe at poinck/.y;u:ca1mm 6w yq zt B is larger than at point A. Where is the water prm6 :./1cw cmu;zy yakqessure greatest?

  When you blow some air above a paper strip, the pg-nbc d5gey p;z+05apaper rises. This is because

  A sky diver falls through the air at terminal velj2zv5;iw9g pgv8odj 3ocity. The force of air resistance on hig od;53 i8gp2zjv 9jvwm is

  Two Styrofoam balls, of radii R and 2R, are released siz +3pyls n;(/m:ceh vvmultaneously from a tall tower. Which wil:;vl epz 3shn c(mv+y/l reach the ground first?

  When a small spherical rock of radius r falls through water, it expe d9kc0y 5 okt, 01xdbam)gux1driences a drag force kg0k, 1da c0 1xmxboytd d5)9u$F=arv$, 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 pipe7j.xge/pjpw/b4jv0 : t0o7hs r :bvah ? That is, if you made a 10% change in each of the quantities below, which wo/b 7jh:bhj. tr/agv oev 700wpxp sj4:uld cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diameter ofp(*c t /by;viusaa)r-d ::l7oq tbw-u pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acrp ri *uawul (c:a t-sb:7qv dt)yb-/;ooss 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 diamete 1qneq2a kz+j8r, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subjec8j1nqkze2 q+ at to the same 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 "gr . ;ow8uo(a8pj.x0rox0xg x rreasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of s8 x ;8gx0xw0up rx oa(.jr.orotaying in little globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in watywnqcs.m92 w2fc6, 3zura7d 2rj sh.ter, the water rises to a height h. If the dswcy.h 26r awc. 7f9m2tq2dzujrn3 , siameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficip.y s0rif,(z iently 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 twic iyfr(zp0,i. se as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as k .2e 1yn,+bz.izwr5eti qz/f5nwkn2the water bug, are sufficiently 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 e, 2q.bz z /rywz+nin5e.wfi1nk5t2kA 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 1zux, 6lf+jud cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What jfu1 zxdu +l,6is its density?

  A liquid has a specific gravity of 0z7vhex2h /2ap.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What ioj ngon45rw/+x2: vtz+;qwq qs the maxinw5j+/2qo: q4v gnx+ rz ;oqwtmum pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowsz r65t /xor3zjzn nch/ o/,k -bj;b(djz-(evvhoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of w;u 62:v*aivrgeuiv(80 zkhh- 5wjvw 120.0 m in theuv-ih j*5k0ua8w:i ( ;hzwv2gvwve r6 ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximumvs te+ ;d; ji9nqz:(de force ofdq;n vzs+dtj(ei; :9e $5.20 \times 10^{5} \; N$. 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 absk7m .ko s,dttb6y d-jv0.aj1dlswg ;;olute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surfam ohp x2glg kc+h14(/gce of sea? (The density of1x/ (gg2mgkhc+op 4 hl seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute xmaj7dp4 2*ip) jd o4dpressure at a location 15.0 m below the surface of sea? (The 4*4oj2)pxpddmj7a id density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraujsl q*efpp3(1-h5t y nlic machine. The small piston has arsjte*15 h(qn- l3 fppyea $2.0 \; cm^{2}$. 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 hasb198ern;tl-4l /df 3ezx jyzfl3z - td 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 ;4fxfj9ytdbtz l83 e1 zzl nl/-der- 3order 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 hydrauc:31j8ea;:y); rm w: zpry*dplog x 3 +ttssrllic piston. What force needs to be appaslsl :t1go c*3r px :3+;:rzmjyw)tdre8;yp lied 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 l a)ffqtzutd0j,f.(+ large piston has a diaa +d)ljuq0 (.fzt,fftmeter 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 t ;w)hoxam c-w;5w0ltin water. What is the buoyant force of th)tmawlt5w; o cx0w-;he water?

  An object has a volume o+ j nbhu1)yvm+(+- i6zgllm+6nrv 0fkf4o bblf $4.0 \; m^{3}$ 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 submerged1wx.rs moqeiyc1 e(( kb4rn 5( in water. What is the tension in the str 1oyensq4cwi1 (em5b x k((.rring? (The specific gravity of iron is 7.86.)

  If the density of go+npksc0an5 /)lyd jh ngl)x0 2ld 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 sub2t-eg2 e:k11hz lf, s uhl*d a5s24;eb hgnbcumarine (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 in air and 6.86 N when it is immersed inmg6z4 j,6v;r g:jl ukassu(w/ water. Wh4 gjgv w/lms:u, zr6s; 6(jakuat is the specific gravity of the object?

  A container of water is pc q4.dg 5nnfil0jvbn057w ze :laced on a scale, and the scale reads 120 g. Now a 20-g piece of copper (se d74 nvi:05ncnl 0.zf wgb5qjpecific 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 agyft 1 w0 x4yd/nr:4ikg 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 lengta c9i dkex. 9wx-wd8.pi/lq7th 12 cm and diameter 2.0 cm will just barely float in water. What is il wqa9dixe-. / 8tp9i7wxdc.k ts mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0azjyp zfwt :)h1j:.t7 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the p.ft :1w ja:yz)tz7 hjbox 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 zrrnvr,ks8v 5z3 ra/2the water. The weight of the displaced water is 2000 N. What is the weighvnr5zv2r/a8 s ,k z3rrt of the object?

  A solid object floats in water with three-fof0b bkci2y 90ynr/lr /urths of its volume beneath the surface. What is nrbl0k0/ 2y fircy9b/ the object's density?

  A 200-N object floats with three-fourths of its volume beneath the surfacfc65vpjp q;h y* ro,p4)bf,w ee of the water. What is the*q y5e,r,p pv)wpfb4j;fc h6 o buoyant force on the object?

  A polar bear of mass 200 ,q74 u izxtoe6kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will ju iz6,t o4q7xuest 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 ql7it4xk9xw 0 flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a osum:;p3 kmq0 2.0 cm diametem;okmsp3 0qu:r restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a )p2 .(mprkdc))pbqa.tju64 u9 wvd2rijl.oppressure 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 drin/n7x8ib8 bl 92g ififnking fountain with 300 kPa, if the fountain is 30.0 m above 8 i92lfn bi7fig8x/bnthe pump?

  A hole of radius 1.0 mm o 5k kr7yfz -,ve))ozq5yrmzw)ccurs in the bottom of a water storage tank that holds water at a depth of5)ykm,qrez5)fv)o ky -r z zw7 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-,b;v(s tlpu,7ewb0g xsectional 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 taou2;ts2 p-vzif0 p,e bi ls80fke 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 to tl0,ppvio stb esu ;2f-z 80f2ihe upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an artery decreasedtiu s04s( m:w1 0rrvrk6k7 lcp the radius by 10%. By how much would the pressure provided by the heart have to be increased6pr7 0(0tssrl4 rvim u:1kkcw to maintain a constant blood flow?

  Two narrow tubes are placed in a pan oipg3sz .ovn .u+qmb)ibyx 6m :f*h ;x*f water. Tube A has twice the diameter of tube B. If water rises 24 cm ino )qmm:nyhi*.+uvs6.bfb ix*px g3;z tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise :vgzl 6r2-ugkh6;qn ein a capillenl6 ;urhzvk q:g-62g ary tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius r/0 pvb:ckdxn//j8 izse6pi3 uise in a glass capillary tube with a diameter o /vcxnsub360ii /j p/8d:e zpkf
0.50 mm?

  A narrow tube is placed vertically in a pan of q;9qz2y)xpgpqxl(2 r water, and the water rises in the txr9(gpp ;zqq q)2x ly2ube 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 in the tube?

  Consider a rectangular frame of length 0.120 m and widthmoyd ;ll b.q(5 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 to5(qdym l.;lbhe soap film exert on the 0.600 m side?

  An adjustable rectangulao5w92 (nox 5ek:2dxe .aiexyrr 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/mx5rw2 a.xno: (ee9ix doeyk25. How much work is required to move the adjustable long side so that the frame is 12 cm square?