The three common phases of matt6jk -+n/ tf.s g0ha zzkqxxv39er are

  Density is

  Substance A has a dene 361f;nvfr rt7 0xe2eifr(evsity 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 oz+ qkj; +dd3hh ix9.zc4bskq7f pressure?

  Consider three drinking glasses. All three have tjc3)f 4kkcbj,*z f 5lvhe same area base, and all three are filled to the same depth with water. Glass A is cylindr ffl 3cckk4*j bv5)jz,ical. 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 inside and outsidyr)5g +gk3y pju 2;uupe a tire called?

  When atmospheric pressure chan.szfypl.x jz 5 pk+0h*ges, what happens to the absolute pressure at the bottom zh05+szl .*fy.jkppx of a pool?

  You are originally 1.0 m beneath the surface of a poolhcws/f 9o9 n;p. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on you9 /hw;cn9s pof?

State Pascal's principle.ohsfw2p3o sg722u( qe

State Archimedes' princigy. xovo/c2s qsm(s34 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 inny,1xl 79fm+1utgcx rto water of constant density, what happens to the buoyant ffg11tyl7um r9xx,+n c orce on it?

  Salt water has greater density than fresh wa a:i;4 npx vx9hycye-)ter. A boat floats in both fresh water and in salt water. Where is the buoyant force greatexi4e pvnh;c)y:- y ax9r on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh wa9i- ttll :*v:vf w* qgnz,..ndf q;fbdter and salt water. Compared to the fresh water, the volume of water displaced in the salt waterqgb;,iv9 .tql*tdd.nw:ff: nv l-zf* is

  A steel ball sinks in water but fve r3ax,e:s) uloats in a pool of mercury. Where is the buoyant force on the balluv,e:xa) es3 r greater?

  A 10-kg piece of aluminum sits at the bottxcux*vv v-e4,t: d*xnom of a lake, right next to a 10-kg piece of lead. Which has th *x4 tx,:nv *duxvc-vee greater buoyant force on it?

  A piece of iron rests 5.zzj;5jvug toaiv() t)e ve0 on top of a piece of wood floating in a bathtub. If the iron is removed from the woe jv eza(0j5 v;)z5t)tg.ivouod, what happens to the water level in the tub?

  A piece of wood is float+c3:5-kmw b mq+ xt4 2hxw3ig ;bhcpcying in a bathtub. A second piece 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 water, what happens to hw3 w- ixh4 tcy3q b :;mx2+ccg+bmkp5the water level in the tub?

  Water flows through a pipe. The diameter of thej1hed4qgv2+ k iuj-q/ pipe at point B is larger than at point A. Where is the speed of the watkji14eu+qdg-qv/2 hjer greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipk,9+l( h+ byfq1pbr pbe widens to twice its original radius, what is the flow spelhyp(+p qk+bbb 9 ,1rfed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to hadz0x)dvwor lqqe pi) ht.),x2q,1 n m+lf its original radius, what im n)q)rwxx p2lod.z,0qh+dtqv) ,e1is the flow speed in the narrower section?

State Bernoulli's principle.jp.n t aj 6x 14:e,dmaz6qjw)c

  Which one of the follow f,,b 3l chv-octz c+sqe 0yj,)jw/l2ring is associated with the law of conservation of energy in fluids?) svh+y wbcq , l,-co/jfjre30 t2c,zl

  As the speed of a moving fluid incre,mbfz8x(6k mf5 hxb+cw3v j 3rases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe axiw7)j x xs+n(t point B is larger than at ps )xwi j+7(nxxoint A. Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. cj n)q+uke.ry5o:l (u This is because

  A sky diver falls th+ +e*jtrafbkf2a5i o0rough the air at terminal velocity. The force of air resistanaf*tfrko e2b++5ji0a ce on him is

  Two Styrofoam balls, of radii R and 2R, are released simultahxhu7 4 ;5dfmb,cv2m7g 6hnh qneously from a tall tower. Which will reach the ground fiu2mc vbn7 ,h5h4h qxhgmd76;frst?

  When a small spherical rock of radius r falls through water, it expereststx: s 0tk7n,g oe3ztl+7,iences a dragln7,+,s0t kt7ztoget sx3: es force $F=arv$, 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 greates:7m zs+tv(1, ) uvzbaihi1pid2fg v/y t effect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in the flow ra1s,gt ( h7udvziipy 2zv:1v)a mfb+/ ite?

  Two horizontal pipes are th 77aoynx:*mi 51ck alre same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across thaa*l 1rok7xn:y5i cm7e 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 w3n;mu n 1, nyvwqx2o6diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure dimw6qu2 1n v,onw3nyx; fference 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.+m(/- g)khujc hog )uv This "greasy" taste seems to be associated with oil spreading out all over the surface of the(vc)g)huhjm kuo /+ -g 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 wi14uqx-wz1w :bcnqc-5l n 0a rater rises to a height h. If the diameter were half as great, how high would the01czwr-4iq :5waxnl - nqbuc1 water rise?

  Certain insects, such as the water bug, are sufficiently liwz*q90)jqu7ag h8no/qye0ps ghtweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water bugeq)jpqw/*7o 90g n0 uhqszay8 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 thatej y()rpua5 n* they can run on top of water without breaking the surface tension. This is possible because )yr*epju (5nathe 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 dimensiov.oiwursa4 3pnko/5 x1,;csons 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its densitynr1.ow34k,s coov uaix/; p5s ?

  A liquid has a specific u)r.wrjr8vm3h k . oj3gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm xf+ 2gkw(7ps od 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on awk 2d( pf7+sgo horizontal surface?

  A person weighing 900 N is sx1vffn o,*di20,h wyvtanding on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolpq 8 jjpz89uim9,v.hin m,q)w ute) must a submarine withstand at a depth of 120.0 m in thenp)9qwv.m , q8i ,m8i9jjup hz ocean?

  A circular window of 30 cm diameter in a submarir2+ z3:z lxt(qb )wlngne can withstand a maximum force of nrtlz )(z3xbwgl2q:+ $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge presstfal9(mq+niu 72n vs 8ure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the sue3(qlt d mq(*trface of sea? (The denedmq(t(*ql t 3sity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at +fttq1sy+y/ fa location 15.0 m below the surface of sea? (The density +t f 1+qy/fystof seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of ay ;thb:98)vo,m+ ymaeh *6a ehij,v)rex)k dl hydraulic machine. The small pisto*yv,;aom8jr)a lkvb)h+ihtyx mhe ee),6d : 9n has 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 c5jalo 2ur tks8+ q0zk:m and the large piston has a radius of 15 cm. What force must be appliedj 0arklquz k25:s+8to 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 hydra3b qs*mll2++z*gd ti pulic piston. What force needs to be applied to a 5.0 cm diameter itlpb l +d+3q*2 zgm*spiston to accomplish this?

  The small piston of a hydraukb5 o +r0/wvwxlic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of 15,000rw0wvb/5 xk+o 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 waty . kh1yo9umzhgja69)er. What is the buoyant force y y61gu)mh 9o hj9.zakof the water?

  An object has a volu5r,;ei f:3dvonx 5kqsme 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 l ) h1e2w1xgrfis supported by a string while submerged in water. 2g )fl1xe1r whWhat is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold 4r j1ju9r omuyiv ei )1nw/i;2is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (den:q uh cyz+ jh24a6mjb)d)jq5tsity = $7.8 \times 10^3 \; kg/m^{3}$) 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 wh vz6 08axg+5qto/ o4ew lcevc7en it is immersed in water. What is the speci egv/ov0 74q5+l8c owxazct6efic gravity of the object?

  A container of water is placed on a ia llj/k)/;iiscale, and the scale reads 120 g. Now a 20-g pieiill;/a ki/ j)ce of 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 dens b1 ,sykne-go,f itc4rl*2ma, ity 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 7 w-uxaj ozczs j1g5x);y 0-myand diameter 2.0 cm will just barely float in waterjxj7- )5ocx -uyz1gzm 0y ;asw. What is its mass?

  A rectangular box of negligible mass measures 5.04*b,cd,mczx q m long, 1.0 m wide, and 0.50 m high. How,q,* b4x mczdc 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 wate:) eh3lppdzv- r. The weight of the displaced water is 2000 N. What ):pve- dlhz3p is the weight of the object?

  A solid object floats in water with m2 un o8p7uz a)cxo.s*three-fourths of its volume beneath the surface. What is the objeczx*nca2o) m8s7o up .ut's density?

  A 200-N object floats with three-fourths of its volume beneath the surface of h6 y8zmv48oulizr mt, i 9ym99the water. What is the buoyanuz9mztry 4,l8i6m vy98 mi9oht force on the object?

  A polar bear of mass 200 kg stands on an ice floe p.tbe b-en (s1100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? b.-tb sn e1(ep 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 rateoczr 8fu;cn2zba+ y )+.

  Liquid flows through a 4.0 cm,d6x t*,,8dna6hmvwj.kvky i diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restricta8.*v 6yk,mtjd w, , kv6idxnhion in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a hof31q)7*i zrlovpfib qogf7 .y6hp18 grizontal 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 )m(ty sg jcv8o)3 vl,44by,da nlh.wr a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the pum(cyvoal4 w .dgyl rn 3,)),tbm4hsv8 jp?

  A hole of radius 1.0 mm occurs in the bottom of a water st17 0j4larx xktorage tank that holds water at a depth of 15 m. At what rate will waterx7ka04r1 tlj x flow out of the hole?

  Water flows through a horizontal pwljpw /(c1m7v 2;gqidipe 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 long would it take to pour 4zq875r f8+l ri+adofee.4u )m nlp1 yj.0 L of oil through a funnel with a neck 15 cm long a.8ael4n zforpfue jydq+8+) mil1r 57nd 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 x)dwd 9uj5nbw/9p cr:t2o .y kthe wall of an artery decreased the radius by 10%. By how much w9udrw) t:cjob9pn5y/x2dk . would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are v km p5ul3m:+ rglgkxn:h-(c2 placed in a pan of water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube2m(gvu:n -plck+3:lghxk 5 mr A, how high will it rise in tube B?

  The surface tension of water k ur+;(e v,;nrgg 0d a+6mjobcis 0.073 N/m. How high will water rise in a capillary tube of digkb c0eud;j6ra(+ n;og v r,m+ameter 1.2 mm?

  232

  To what height would water at 0 degree C 0/n0soxtsaq0 elsius rise in a glass capillary tube wis qnx/oas00t0 th a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in tf6)1yg9vngxk )2 c9wjlzz aw /he tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowered to onz9wa)f 2jxzwky lg96cv/g)n1e-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 antu knbj+ ep,y(7uw2ac8ph1g, d width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m,p ch1,py+wjn(u2 ut7k,beag 8 how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm )q 6i- q7+cx-pkfvfdf and width 5 cm, and is built in such a way that one of the longer sides can be m -pqvfdf f ci7x+-q6k)oved 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 that the frame is 12 cm square?