The three common phases ofy vo p9 dk 1qo)se(8jd8xgbk z6no)8r7 matter are

  Density is

  Substance A has a densiteswim6l; psq f,k v4 ,fy4dk 3/czio*0y 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 ,xcwb7/epr v *( k v.7qtx4dljof pressure?

  Consider three drinking glasses. All three have the same areaindo) l/2hnb9g4 rnvq 5r q21g base, and all three are filled to the same depth withr q g9/2gnvdrni4lbnoq215 )h 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*/tv 57dbpcb ),kdlos inside and outside a tire called?

  When atmospheric pressure changes, what happenslx) .xa8 6m/cl4vhz st to the absolute pressure at the bottom of a poolla.xl46 ct/s xh)8vzm?

  You are originally 1.0 m beneath the surface of a pool. If you q1 ud3b- ,ixe93qjy9ysc3zj f dive to 2.0 m beneath thebqcqfei9u39 jdjy3 3z 1,-y sx surface, what happens to the absolute pressure on you?

State Pascal's princ9 cz9l) iwhi:ue1 fq*yiple.

State Archimedes' principlgxl 1r*xo8 y-ce.

  $50 \; cm^{3}$ 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,xns0l a,xr2flpd7hq5h v5q83g-, f ce what happens to the buxsd2e p7558 lq-, gqfhl,x0 3f nvharcoyant force on it?

  Salt water has greater densitpo,ia 3zolnhkw5 1,a 7dor6/wy than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force g aha o63nzri,o /5p7d,wkwo1lreater on the boat?

  Salt water is more dense than fres-l7 n8qxv3,5klzt/t ;x,z h ivmxf x6bh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt watex6 h ,xxz, 7 zf3n m-/kitlb8v;xltq5vr is

  A steel ball sinks in wad0akf1 y4n .m ) .,di)uc.;j cucgr5 xqx0yvveter but floats in a pool of mercury. Where is the buoyant force dc0 yudc ne.ckmqa)yvr)0 x;v1.,ug i. 5jx4fon the ball greater?

  A 10-kg piece of aluminum sits at the yugh4:/dzncl b4 x-6u x -:m7ojxep/g bottom of a lake, right next to a 10-kg piece of lead. Which has the gxy-o 46: /: zbxl /n4gxpu-jduhme7cgreater buoyant force on it?

  A piece of iron rests on top of a piece of wood float 0auj qfp+e)hua 1r8wpha hs(-055mtfing in a bathtub. If the iron is removed from the wood, what happens to the water level185pa(u) +f5 uaefmh0srj wqta- h0ph in the tub?

  A piece of wood is floating in a bat(q 5.siw;wi 1/xxute84wd,im l x z5uthtub. A second piece of wood sits on top of the first piece, and does not touch the water.xu dti( w.8 s/i5 wm;e,zx5iw xt4uql1 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 the pipe at poin *6ldrj2gq:lq t B is larger than at point A. Where is the s6g*q qjr2ll :dpeed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal piy5)9 mqmgjhm2+6 *ef cjkc,a rpe. If the pipe widens to twice its f9grmh ck652*c mqejmyj+)a ,original radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal ab ul6(f 1c5rkpipe. If the pipe narrows to half its original radius, whl( kfb5r1a6uc at is the flow speed in the narrower section?

State Bernoulli's princ o7pxwqf6wh-*, sw*.ay w+j n /vp4iekiple.

  Which one of the following is associated with the law of conservation of yrd9,gq eek(4qo-u 7jenergy j,q or-49e7 (kyguq edin fluids?

  As the speed of a movwm+/x o0nx q8ting fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is larg n6;8d(cz m qr3woe4wmer than at point A. Where is the we d; ow6m3mn4q8zrcw( ater pressure greatest?

  When you blow some air above a paper strip, the paper rises. This i0t 2 v1qm.hw(tc-m kqt;u /ruac 5y3bzs because

  A sky diver falls through the air at terminal velocity+n5tim h87l,7okvk c ir0. ;:kughan z. The force of air resistance oavm.kn0ztrc kg+: h n8uklh i7,i5;o7 n him is

  Two Styrofoam balls, oc )i 379*g2r11nb6ltnwg ov awi2myi of radii R and 2R, are released simultaneously from a tall tower. Which oiv36 7nmyaotgw cb)iri2n*l21 wg19 will reach the ground first?

  When a small spherical rock of radius r ik7g7y)ul6hsj 2f es,, dhb -lfalls through water, it experiences a drag force f h2ld)hsl6,g7 uski,b7e j-y$F=arv$, 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 pipe? Thtj,g jyqg r;.5 m0+;7wnhqkpla):sxb at is, if you made a 10% change in each of the quantities below, which would cause the greatam;q;:g, +rxlwpjtgh5 jbk.0)7sy nq est change in the flow rate?

  Two horizontal pipes are the same 03s-l+cdvtdm2a w*f qlength, but pipe B has twice the diameter of pipe A. Water undergoes viscou -qlmtwc*da0d+v2fs 3s 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 have the same diameter, but pipe/z +jku 9ebd.g B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the sa+ edj.9z/b kugme 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 :dys1qp -ub5 u"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 is5sy -bu1p:du q readily explained in terms of

  When a tube of diameter d nhn;twcor 3 ,-tc t *roetgw5 oc)7udgh00q83is placed in water, the water rises to a height h. If the diameter wer5r7 n -qo3 ,thhucwdt*tr0 occ03gwotegn ;8)e half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight dwbm9 -e (-qli2 wkz0athat they can run on top9im0eq-wl-w(zb d2ka 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, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently+ hifw;0) y/pwfwg5w x lightweight that they can run on top of water without breaking the surface tension. This is possible because the5wwf)yp+wi ;0 xfwgh/ 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 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 30.0 aboc9lm4gfsm1ov*e l8 j 62;rg. What is its density?se r2 ba8f;mg l6jmo1c 94lvo*

  A liquid has a specific gravioqmn j 5wg*h.r2fd2 z,ty of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the ma4 ahv*krie*-n a 1xqt;ximum pressure it can exert on a hha*eiqkar xv -tn4; *1orizontal surface?

  A person weighing 900 N is standing on s3 5u vmg(f72y/vyjd z4 sg(rpanowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth ofs0ph;,jaxewzfrz85 sp- k5b1z;( mkj 120.0 m in the o 8xz (;0e;jf 1bzwkp-a m5jhsk5pzs, rcean?

  A circular window of 30s kv6 fk-2a/xp :g35 uds)snqq cm diameter in a submarine can withstand a maximum force6:qvxsd5u/ - q)k3fspn2aks g of $5.20 \times 10^{5} \; N$. 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 is 300 k)l-lq59 fetc)d2gymw Pa?

  What is the gauge pressure at a location 15.0 m below the f:kw,gmbqe6j1q; x 6tsurface of sea? (The density of seawt;jwgke6f,m:b16qq xater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the u -bkm mio (2:/t3s,k jtyt-qdsurface of sea? (The 3s2b(t/iy,:-tmj tkou qmk-ddensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pistof.qr +psnh; .s;.v vomn has afhvn ;v+.r..om qsp ;srea $2.0 \; cm^{2}$. 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 hasq5ui jcr:e rkj +9/2cz a radius of 5.0 cm and the large piston has a radius of 15 cm.2rq59zj/+k iuccer: j 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. Wha(*qmo/tpuu 5: x3 s8 ga da:6/eittunvt force needs to be appla*s (p/duua: 8/: t6tqtgnovix e 5mu3ied 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 large pis*.ecupzyu+vsm+ z :9gton has a di:sy* z muzvgp++e .c9uameter 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 in water. What is the buoyajhddil44 **r f7oh m8ent force of th87* flrh*4o ij4m ddehe water?

  An object has a volume 10 dt(eu k8y.vic edb54(ixdgof $4.0 \; m^{3}$ 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 m *rmw/(etu,f.br l/cz +gl8wsubmerged in water. What is the tension in the string? (The specific gravity of iron( wmr8cl+ /et f/wlg.,*mr ubz is 7.86.)

  If the density of gold is ,hha1 o deq+9 veqy3m3$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel s,zqx*9 eknx74b*xi y5 ep/iqvubmarine (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 6.8,ythyh b0/y w66 N when it is immersed in water. What is the spe,ht 6hyyyb0/w cific gravity of the object?

  A container of water is placed on ap b2e1tt 0bqll3 z0h1k scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) bl3 1h0b qz2ptkt 01leis 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 295dezltug ;kkg 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 diw+3d zv tn: /f*c/ypjlameter 2.0 cm will just barely float in water. What is its ma* nd/+f/:p jyv3wtc zlss?

  A rectangular box of negligible mabv jqg+/tb8j9*ex n)4d1e egs; yc9 itss measures 5.0 m long, 1.0 m wide, and 0.50 m high. How mabd/nvx eg j+8bs)9gt*1 jeye 4c9it;qny kilograms 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 the surface of the watere o,3 xgp,oq5n7*bc8cc phbvxbp v) 4b;/pwd*. The weight of q/gxn),b,8b5 c bcep3xbop wc7pvdp* vo;*h4 the displaced water is 2000 N. What is the weight of the object?

  A solid object floats ka5gj iwm*u,5j d.jz:in water with three-fourths of its volume beneath the surface. What is theawijg5j,md. *5jz: uk object's density?

  A 200-N object floats with thr(*dzdzt8 tt6ic bpi7h27hiys x:e: u 7ee-fourths of its volume beneath the surface of the water. What is thu7 tidz titheh ib67pxc78d :zy:s*2(e buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is te xi2 ub4okwq.7j :t./xpyys 0he minimum area of the floe that will just support the bear in saltwater of specifip 40juy box/:e7yx2qit . ks.wc 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 flow rate.ek/ccsja2z:q n2+d w6dbp5 ;y

  Liquid flows through a 4.0 cm d9b9 ql;qg k93qc khbi1iameter pipe at 1.0 m/s. There is a 2.0 cm diameter k qkb9q39bqg cli;h91restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a ho 6 ok4ko(du:iwrizontal 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 dr 6s r2hfu0h-;irushdg+k4(7kt-rk uginking fountain with 300 kPa, if the fountain is 30.0 m above the pump? ukt4 uhsrkg2;6(-rf-i hs+dhr70gku

  A hole of radius 1.0 mm occurs in the bottom of a water stoa diae2e(( u7mrage tank that holds water at a depth of 15 m. At what rate will water flow out of th2 mueade(a(i 7e hole?

  Water flows through a hor5y9ui8 jpq9 afizontal 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 lg g73;aval pvi1:tag9ong would it take to pour 4.0 L of oil throughv9g:ggltv7 ; iaa1pa 3 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 the upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wal 5.. l9tifm q*kkcdwb;l of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to l;* k9i.fw mqdc.t5kb be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tuc2l( bkdt 3rf1be A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise in tube B3 (k cl1brdft2?

  The surface tension of water is 0.073 N/m. How high will water riseke h+jb8nk:r0 in a capillary tube of diam kb0:krh8+e jneter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capilla88mvz,cfz o8 64 ik k*uxiova.ry tube with a diametckmz.a4 6u o88vo i,*ix 8zvfker of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, andemmfpb,,n1o7l lr- k;r*xf)jq)k 5z a 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 value by the addition of some soap. What happens to the height bpjl-r,m1k,la)q fr) k5*e;xf7mzo nof the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a soq; 1nx:lgc/z dap film formed within its confined area. If the surface tension of soapy water is 0.0260 /1xlcgn:qz;d 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, and is bui sz-qrml8(yr7 lt in such a way that one of the longer sides can be moved without bursting the soap film contained in the frqy z8lr(r7 m-same. 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?