The three common phases of y w 9zvb09o2v 4zze-rj o7ss6ymatter are

  Density is

  Substance A has a dens+n zv.7cs0ea ; l jlkh7y()fheity 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 n di34kts--gksot a unit of pressure?

  Consider three drinking glasses. All three have the same are k3o3 ncmfgqkz3v:im- hd; 9u9a base, and all three are fillemim kg-hqfo3uc39 n kdv9;3z: d 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 pres.evw l xg5w s4i7r;q7csures inside and outside a tire called?

  When atmospheric pressure chanhc* 2o3hlnml5n m98e0yoj5rnges, what happens to the absolute pressure at the bottom of a plnmh n rhne9 *2j8 y0o3ol5m5cool?

  You are originally 1.0 m beneath the surface of a poolr;u 1y3hj le2h/y*i f uh(izk6. If you dive to 2.0 m beneath the surfackiujf6 eiyy2 lh*/h ;r( hzu13e, what happens to the absolute pressure on you?

State Pascal's princx gawiq7u h(odb:e*tp,npp979 4 ;xgi iple.

State Archimedes' principo y m93lbcd,p(zf:g) sle.

  $50 \; cm^{3}$ 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 de7*q+c yf6kq uxnsity, what happens to the buoyan 7qy *q6x+cfkut force on it?

  Salt water has greater density5 . lrpamw3z6t than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant forc6zar.3 wltpm 5e greater on the boat?

  Salt water is more dense than fres :)xkd d 4uq0ssxpk4(kh water. A ship floats in both fresh water and sapukqs:sk0d)kx 4 (x4 dlt water. Compared to the fresh 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 )fnw/*gar hh +is the buoyant force on the ball grea*+fna)h /rh gwter?

  A 10-kg piece of aluminum sits at the bottomq ah0-k0we5fcx.yn iw8/lxf* of a lake, right next to a 10-kg piece of.n-/hqlfxkw58a0 yc*w e0i xf lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floz0 n;p6jjn+om ating in a bathtub. If the iron is removed from+nz;m0op j6 nj the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits a f 1bu,l,mo)51ng.l gddxa .y/dula+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 tuab1).5ayg1./d, glxao n fldlmu, + dub?

  Water flows through a pipe. The diameter of the pipe at point B is larger than/fv7t fs9 j.k6juvf(q at point A. Where is the speed of the water greate( q. 7vfu6 kf/tjvjfs9r?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the h4-2pq1ogsg v)mdi 5c pipe widens to twice its original radi og s52gdvm-1ch4qpi)us, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/g7e7po ze 2;mq0g y qknl g5ma7/kq;8ns in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narrower 7ynkgk qzp;;0gqq8/gnmlom2ea 75e7section?

State Bernoulli's principltm/lg8i cf* 0 7oei w2co;f:wl(1mneh e.

  Which one of the following is associated with the law of conservation s,u 5xc/c2fuy of energy in flui5f,s2u c/cx uyds?

  As the speed of a moving fluid increases, b 5pinaz*n *tjh2ao,o/u 0f) e;hvlz,the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger than xr b ca y*)hr 18.*rne,:oruuwat point A. Wrrh8)1uox. n :** cb uryware,here is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This 9.zt13xw k gzois because

  A sky diver falls through the air at terminal velocity. The force of air revak*.x pw (wh0t xug.7sistance on hix.(agkw 7.hu txv*wp0m is

  Two Styrofoam balls, of radii R and. iac ;6ulvxsv,jci/4 2R, are released simultaneously from a tall tower. Which will reach the ground first?uxaj4vcs, i/6vl.; ic

  When a small spherical rock hg y7bnq;huq-pfn) /r1; u7rrof radius r falls through water, it experiences a drag for7r)pgq un-u7hyr ;n1hbqf ;r/ce $F=arv$, 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 + vn moyvmwe411yb7:a pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change ino14wmv1n :e bymy7a+ v the flow rate?

  Two horizontal pipes are the same length, but pipe B has s1 0bq9 vxiv3fzvl+-+. )s*efmrt qmctwice the diameter of 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 A is Q, what is the flow ra -m)sxtlsv+ bc9z1ve. i mf3r*vf0qq +te in pipe B?

  Two horizontal pipes have theuh0 -zla*oeyqtg (-:u **d3d q vb4psc same diameter, but pipe B is twice as long as pipe A. Water undergoes-ea 0o:udbqhc*3p tvqgu(-sdl*4z * y viscous flow in both pipes, subject 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 +z9e*ntdx.o7jn p:b e"greasy" taste seems to be associated with oil spreading out all over*pbdnot ex9+ ze7.:j n 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 water rises to a height jr h9l6s mk u09x m+v-r5twv8ch. If the diameter were half as great, how high woh r6v0x89w5lsujm 9kr+-tc vm uld the water rise?

  Certain insects, such as the water bug, are sufficiently lightweigjy8zas/ vy*,/ z* rvqcht that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water buz zav/yrvq/c*j* 8y,sg 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 sufficiently lightweight t3se/ohf v**hwtvo, z 3hat 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. That is, bug B is twice as long, twice as wide, etc. What is the maximum upward force ov f*oohse*v3thzw/, 3n the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm has a mass g fe3/,(1q5uqwpv p uxc .xo.nwqh3o080n qmbof 30.0 g. What is its densqu.fwu wnq 0 n805., 13(gmoqoq pphxx 3evc/bity?

  A liquid has a specific gravity of 0wsynp bl vg*0-:o6bg*vsah : 94,h pmd.357. What is its density?

  A brick weighs 50.0 N, (0 t ciiz8zi.oand measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pr.iit0o z(8cizessure it can exert on a horizontal surface?

  A person weighing 900 N is standing onizy5w:z77 wzt snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine,)txcy(j/j) mstg;m3vb:zml withstand at a depth of 120.0 m in the ocevc,l)mb(tzyxm gt3m /s;):jjan?

  A circular window of 30 cyt91 e8mvc;szm diameter in a submarine can withstand a maximum force 1y z8te9;msvcof $5.20 \times 10^{5} \; N$. 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 absolue 2d7j*5jp2haqs ,i rnz 6b,ente pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the sur ev*54d (6q4vek qpr0mmn l.ddface of sea? (The densitylpmd qv(644ke d0n.5 ev* dqrm of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressurgbp2 ppisy r0cg+*dfx-1 s )t5e at a location 15.0 m below the surface of sea? (The density of seawat gfsy+idbt-p 2pxr*5p sg01c)er is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on th1 b t mme),pchunyx.5l,w0ue)e small piston of a hydraulic machine. The small piston has aree)nu,m.l0, tu mbpyc e 51x)wha $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the sma6hcy4pqi z4j*y* nky.ll 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 p.4pk jq4cz*iy n*6yyh iston 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 i+6mrj bg f- czf6c6*kcm diameter hydraulic piston. What force needs to be applied to a 5.0 c6bkgmc ic*jf r z+-66fm diameter piston to accomplish this?

  The small piston of a hydraulic lift has/c xidpc8xta/5 yofol +;c5,h a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift ra8tcf5lchx;p oy/ , ac+xid5o/ises 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 air7,qt8pew1lul qz(q 7+j; fwo e and 30 N in water. What is the buoyant force of the waterejlw+o1u z(; ,t8lwe p qq7qf7?

  An object has a volume 6ln0lcogvf,( ubg o/.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 be )w(q;dk0 qmey a string while submerged in water. What is the tension in the string? (dwe qm)0; qek(The specific gravity of iron is 7.86.)

  If the density of gowbrw;tu2m l55tjzg41iqr42u 5 nn(h pld 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 (densixux bl/r -s:;w95sj9s0xz zayty = $7.8 \times 10^3 \; kg/m^{3}$) 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 a ws4v0rh0gmi 5)p u4k pw9vqc8nd 6.86 N when it is immersed in water. What is the specifi mgwhi 00 vp9p5q4 4r)skcuvw8c gravity of the object?

  A container of water is placed on a scale, +o(25-hbmc n.nwa+x czz.x/d:o sc hj and the scale reads 120 g. Now a 20-g piece of copper (specific g(nhm hx2jx :/ono.+s 5 wzaz+.c-db ccravity = 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 mas,ckoo hy y3*1rs of 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 diameterwxul v2aa r4mh 2(l2,6n.grsy 2.0 cm will just barely float in waternrx w2l2 grhua6ys42,l.vm( a. What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 mk) s ,is*idtdc3+fx- n wide, and 0.50 m high. How many kilograms of mass can be loadedsdxici,ks fn)*+t3d- 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 55gyt:q k :i7evia)(k b)nrnzthe surface of the water. The weight of the displaced water is 2000 N. What is the weight of the ob:g )nnkkri5i :5tav(7e bz )yqject?

  A solid object floats in water with three-fourths of its volume beneath t9p mzk6hs+gyam.g jut6 +jl; /he surface. What is the object'p+ t kggaz.j6hs+/jm;9 uylm6s density?

  A 200-N object floats with three-fourths of its volume beneath the surface of f:8 k bht4j: ;oromi6vthe water. What is the buoyant fov :oo:i6jr mtfk4bh8;rce on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. Whatg*ezjp+ rx6cs;*mwqwo,0sdb v 7qk:- is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravit,g6q-soc*+sw mvez ;x*:rd 7 p kjbw0qy of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2m; 7gw al3nf/seyf.i/* o jy4e.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s.sj j,rk2yg73.5f . z5tezq 4;s4 tw2g jolijpk There is a 2.0 cm diameter restriction in the line. What is the velocik54;jg fjel i7p.q yzsg w25tr,k2jj 4o.zts3ty in this restriction?

  Water flows at 12 m/s in a horizontal pipe with z yd(6)ty)myq-o6.y egmc7a k 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 2(iaowkaw k;)drinking fountain with 300 kPa, i)2a kkw woi;a(f the 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 hold) 1u-q,2u7h pevn;m,bsx -idg ge(l ams water at a depth of 15 m. At what rate will water fl2xsn,hi qu-evp;a, )7md1lbue (-gmgow out of the hole?

  Water flows through a horizontal pipe of cross-se/9)5dk ge*s 3s:tztgqo ki cx-ctional 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 o 4 zj3q5zwu;x2dmjw0mf 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 surfac xm5d0q;jzumzw 3j2 w4e 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/)q6bebn7am e on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maibnb mqee7/) a6ntain a constant blood flow?

  Two narrow tubes are placed in a pan of wate*,i p uew*vo1qr. Tube A has twice the diameter of tube B. If water rises 24qo p**viw, ue1 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m.7aqan7 (*l5*x*r j a. ldimlh5m3cfeq How high will water rise in a capillary tube of diameteflxaqlji3*c qmn al da*m5r(75 e.h*7r 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a q:i+ux 2kj w4zglass capillary tube with a diameterq w+2z:jkx ui4 of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the waterw40yc6cnl20 dczfiy 6 rises in the tube to 4.0 cm above0 6cdwzyclc 40f 26iny 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 width 0.6003x;v*wjfb wxr 4 ie-iv44xe 8i 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 soap film exert on the 0.600 m side?-jxi;*i438iewv ex xf b44wr v

  An adjustable rectangular frame has length 12 cm and width 5 cm, andh j0k(e5y amw*4/iz 1 yneyxp/ 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/m. How much work is required to move the adjust4n5jw/(y1/m0ziy h *kpyxaeeable long side so that the frame is 12 cm square?