The three common phases gjkaj+7;hwsm9 ei)c 5 of matter are

  Density is

  Substance A has a density of kur38 +ype h0bab+f; t$3.0 \; g/cm^{3}$ 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 k(xs93lbk z7 pjs nbc,whx39yh 89ip+not a unit of pressure?

  Consider three drinking glamiz (cql27 g-asses. All three 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 the bottom, and so holds more water than A. Glass C is narrower at the top than at the bottom, and so-l qci7a gzm(2 holds less water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inssd 8eczog m-6:dz 9ur55hm al0e3fm t6ide and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure )0 aporpi :uh8at the botp) p8a:h 0ruiotom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive to 2.0 ax7t 0ed+s.sh m beneath the surface, what happens to th.as70sx +hedt e absolute pressure on you?

State Pascal's princiy e ctx7y3 7/t2pn)-cp(pi neuple.

State Archimedes' princi;a 4cwp6nuw j-ple.

  $50 \; cm^{3}$ 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, whrw pv8,ihpi6+ at happens to the buoyant force w86pivp hi,r+on it?

  Salt water has greater dy +tc 4v02f+bs8prtl yx))qfbensity than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant forcrf 0ftq)c 2b +txsp 4y+bvl8y)e greater on the boat?

  Salt water is more dense thn1 3nliv)ei2*2,ep ug )qpsik an fresh water. A ship floats in both fresh water and salt water., 1)23*gupivnpike i)q senl2 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 mercurywtpg-z pjk* .)wmu6mvj8xt-: . Where is the buoyant :*km8mtu .tp jz-jw-wgv)x p6force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a layf)o6f4ykqn)o j i -u60bsev7zjll0+ke, right next to a 10-kg piece of lead. Which has the greater buoyant4 6qznfuy) 6bvkf +sjiy-l07ejo)0l o force on it?

  A piece of iron rests on top of a piece of wood/0snf pp -gvsu7;s* tl floating in a bathtub. If the iron is removed from the wood, what hals g*f0p;psns7/t -vu ppens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second pictplr++u(yz8s ex 4i 4ece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the 4c zx4u(rs+it8 py le+water, what happens to the water level in the tub?

  Water flows through a pipe. The hs,q+7ur nq .idiameter of the pipe at point B is larger than at point A. Where is the speed of the water greatesn+ r.u 7ihqq,r?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens rj ckaqei-. gnc:o-z516 tr .vto twice its original radius, what is the flow speed in the wider-t1r:k.er.cgzc6vo5 -nqa ij section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrdnpli 9*l8l 8,e6sy1n4qr txdug ks1( ows to half its original radius, what is the flow speed in the narrower s48ng*li,qtsx69(druly dp8s kl n1e1 ection?

State Bernoulli's principleu:uu0*t,66e: h.j elnmrdivl .

  Which one of the following is associated with the law of conservat;u a zuprk/p2rrq1famw +-3a0ion of energy in fl/ aw ra-2p kmup0qf;ar1+ru 3zuids?

  As the speed of a moving fluid increases, the pressure in the 8 lgfqtte l/74fluid

  Water flows through a pipe. The diametw4ytdtkyij)il)2 :h +mkwc/;er of the pipe at point B is larger than at point A. Wck:+ y) )itwhwi2y/ d4t ;mljkhere is the water pressure greatest?

  When you blow some air above acw nisut(vo2g k64f;/ paper strip, the paper rises. This is because

  A sky diver falls thr2s4n; u)g w -n9cerzqa ,mrdq(ough the air at terminal velocity. The force of air resistance on qzr,dsnnr)(wq2a u 4 m9-g; cehim is

  Two Styrofoam balls, of radii R and -l0/ 7/ b5q :lstwpdj(lrkup i2R, are released simultaneously from a tall tower. Which will reach the grl/rudl5-/07sqj( pikl :pbtw ound first?

  When a small spherical rock of radius r falls through watyx*p;1 i9 )j 8umas3)amspx pler, it experiences a drag miaxx 89uslp3)sp* )a1; pmyjforce $F=arv$, 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 narr iv(nb :j ;ik-e4o.rk+b8 pdczow pipe? That is, if ypio ck.bz4nr v;jk :b+8( eid-ou made a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has q 1/1w t9ezv)1/ukxde uq; rxrtwice the diameter of pi teru /e/w v;k)119ruzxqd1qxpe 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 rate in pipe B?

  Two horizontal pipes have the same diame b,h3kt fut8 g zz;xo-kce))i)8znc (iter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, suuz8ot3bk n) ,( i-tccz);h xf)ge kz8ibject 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 "greasy" taste s,hbd+4e:ae b oeems to be associated wibe+4ehd o ba:,th 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 of

  When a tube of diametefows vdg:;.g8 h0l,l zr d is placed in water, the water rises to a height h. If the diameter were half as great, how high would the water rise,wofvs08:. zldglhg ; ?

  Certain insects, such as the water bug, are su lwg;f23k ;ivufficiently lightweight that they can run on top of water without breaking the sugi;2f vk3;w lurface 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 suffiz u-.d sq:o;b byleg/*ciently 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;dogue /by:.b *q-sl z 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 nz2 .gdi gw(68hhde3(rvmmv0 kbi 1s8cm has a mass of 30.0 g. What is its dev zi vw.ermgd2 bk1im(h d8sg6( h8n03nsity?

  A liquid has a specific g0w0um9(: ot+rssh sqk ravity 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 iqhue yf.6lsnk6a0 1nff9 v 1(ns the maximum pressure it can exert on a 1qu60nf.elas h(96 ffv1nn kyhorizontal surface?

  A person weighing 900 N is sj12s b9q6e rqatanding on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a subma56q5xg vx,msu0c obgmt -zy8l3r1nb *rine withstand at a depth of 120.0 m in the ocm8g0ynb3z1x qsro5,tvu b-l6gm *cx5ean?

  A circular window of 30 cm diameter in a submarine can withstand c +l,+wz gqj2jfe59c cr1 ysy7a maximum force of c2e7qf 9ccl1z, 5yrjswy g+ j+$5.20 \times 10^{5} \; N$. 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 inp.t6r8la 7 ga.kw 3grs 300 kPa?

  What is the gauge pressure at a location 15.0 iqt2 o zcymr-2x;h+ape) w*,h m below the surface of sea? (The density of sea e q-p cawtyh mio,)xrz2+;*h2water is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surcx *rn 647sttaj o:qw l ,p7-b;uiqp4jface of sea? (The density of seawaterbqpr;ot 7sn6*w 4,j aji7qluc -:4ptx is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small pi ;pl1u,pki(qa ston of a hydraulic machine. The small piston has are(papqkiu;1l, a $2.0 \; cm^{2}$. 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 thybyi .-m8ot7ue large piston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car 8ou. 7-ybym tiweighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter(pebi 5vrt78qsam:-qh :icu )auf50p hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplvf iaue 7a :si) mq(:-cu5qr850 pbthpish this?

  The small piston of a hydrau (kp7g.nd(zux- + puvzlic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The l.pgz(xz (kp7v-+ ud unift 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 - vy/zidd d/u530 N in water. What is the buoyant forc/idy-5 dd/uv ze of the water?

  An object has a volume o2k6z)sp7 lu z ohgpb ,6-m4,hpcw8nj hf $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported b,e i4h:fq7drd i0gz.h y a string while submerged in water. What is the tension in th.ir,ifh zhd:eqd4g7 0e string? (The specific gravity of iron is 7.86.)

  If the density of gold xn, sg2k359nq-dz 1wyn ezm.zis $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (densit6ixx*oipqnc gs;25 b-spu)h-y = $7.8 \times 10^3 \; kg/m^{3}$) 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 pentyn) 70d )zit is immersed in water. What0t)end pnz)7 y is the specific gravity of the object?

  A container of water is placed on a scale, and the scaz m+ p .pt*zrn,zofv5ts)6xg j:f8-tile reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspend tv)gtt , ojfppm .rzfi8nsz+*-:x65zed 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 wa+ bm1qk1 q d7q9fbvqf p/i5l)ith a mass 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 diameter 2.0 cm will just barely ,;bn gm-m 2s 4ystgdit l6/n.sfloat in water. What ii 4ts s/sy-n2,b; d. gnml6gtms its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 kxjc5ic;5c ze 8qe)aq( 6hc 2jm hi)qj 2zec5ccx (a;6 i8jeqc kh5gh. How many 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 water.lp wnzjuaa -cb 19c2), The weight of the displaced water is 2000 N. What is the weight 9c2b jaln1 ,-)zpaucwof the object?

  A solid object floats in water with three-fourths of its volume beneatid4rusimn 3t:/r :( p-avur cm)e ,.lrh the surface. What is the obr: ur/i. r edlvs4 )um3pm(c :it,-nraject's density?

  A 200-N object floats with three-fourths vrpcuj2jfb x bt11k0a);o+(q of its volume beneath the surface of the water. What is the buoyant force on the obje1fk bc(;q1r jotv pax+2 u)0bjct?

  A polar bear of mass 200 w lr/ akwg(;tc0 w:ny3kg stands 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 iswka/lcywt; 0r:(ng 3w 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Findlrh4.q mnn.-h the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. -2 dfjojz+5q y, xb9ykThere is a 2.0 cm diameter restriction in the lineky2q fd yxz,bo59j j+-. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontalbyfn5 u3 o 2f-+uqei4t6z o3m6u,ip 6xp;rrsm 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 drinking 4nig8:vos0, 4gxig7z x7chigtrz .t1fountain with 300 kPa, if the fountain is 30.0 th. xzvgxg: zs,7t47ing cii 0o841g rm above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank c0 nh0. pf8a6y2j0.rhgtxtv xthat holds water at a depth of 15 m. At what rate w x jvpg20 tf80atn6r0y .cxh.hill water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectionaxww6* aetniuu 5/v) 9el 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 3v g96ket7lp hto 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 toe9t6kl7h vg 3p the upper part of the funnel.

  Suppose that the build-up of fatty 0 (trfu -mz 1p2rwpbpi ef8r2qrm,x* /tissue on the wall of an artery decreased the radius by 10%. By hoqr frt,b*r/f22p 8( m-prxez m1i0wupw much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diametew,xj8s q*0d gdmmb x)1r of tube B. If water rises 24 cm in tube A, how high will it ridg sbm18w*, q0 x)dmxjse in tube B?

  The surface tension of water is 0.073 N/m. How high wili3 v0tc2g2 ttll water rise in a capillar 03lt2 ivtgtc2y tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass:fuor r2t-piw* a.g 7a capillary tube with a af: a7wi*g-u2r ortp.diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and 9r oo) bsu;o+nh.+dve5 y+cddthe water rises in the tube to 4.0e+o5c+9s br) d+ondhy .uv ;od 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 widtp ek1b/ rgl/;hh 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 the soap film exert on the 0.6/ ;gh k1ler/pb00 m side?

  An adjustable rectangular frame has length 12 cm and wid)(j)j6g1vi8 pd,sy4ogpr p p nth 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/m. How much work is required to move the adjustable long side so tj1ppny)6 ,pjds) ro( iv8pg4g hat the frame is 12 cm square?