The three common phases of mx/hhn .6i,p edxf1 +cl zl9nv5atter are

  Density is

  Substance A has a density li ugz8d,;fd.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 p,p, qleqy z2v9l4:y4lx srxk+ ressure?

  Consider three drinking glasses. All three x k5m6oue :a6c(d;ttihave the same area base, and all three are filled to the sacadm:e;xott i6u5k 6( me 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 inside and outside a tire callednx7//l ft;h.eyxdq 7d ?

  When atmospheric pressure changes, what happens to the absolute pre6.k 37t posfubssure at the booksfu63tb7p . ttom of a pool?

  You are originally 1.0 m beneat brn p7(xq,u1mh the surface of a pool. If you dive to 2.0 m beneath the surface, what hapbnuq, mx 7p1(rpens to the absolute pressure on you?

State Pascal's principle*t )a7 8)b aijwvdd/ue.

State Archimedes' princig7bg0 zgsgq u:k 9yfd:8 ;9isfple.

  $50 \; cm^{3}$ 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 djij5dzp ,-0n (39obl0py 2c/vo bqgs eensity, what happens to the buoy -l3geb(obpj2sopv5 9j,/ icd yq0 0znant force on it?

  Salt water has greater density than fresh water. A boat floats in both fr-m1.ikoo efm5d nyk,+esh water and in salt water. Whe,fyn5m1 -. om+ dkieokre is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in bo( 9nyta-,93,j4kjyxlkts elhn es 8k9+sgyt0th fresh water and salt wajsk9n,a,h sy tytll8gkyxs 09-n9+t(e4 kj 3eter. 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 is txsx:bfk wj)56x y+y7e he buoyant force on the ball gy:sf x exwb7)ky+j6x5reater?

  A 10-kg piece of aluminum sits at the bottom of .riucd*dz47dl*ch l) a lake, right next to a 10-kg piece of lead. Which has ddcl7z**4ruh .dc li) the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bat i,fh8dfm p9qeu52)z shtub. If the iron is removed from the wood, what happens to fp9 s8 fmz uhd,ei)25qthe water level in the tub?

  A piece of wood is floating in a bat: v55ewwn4jbnzzr5 / nhtub. 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 n5e/n 5j:nw5bv z4wzrand placed in the water, what happens to the water level in the tub?

  Water flows through a pipe.v x2uf,7 ekz;a The diameter of the pipe at point B is larger than at point A. Where is the speed zxkv, u;2 e7afof the water greater?

  An ideal fluid flows at 12 m/s idkf z7v2- :-dx aan-cpn a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in t7 -:acp2 da- dfzxvnk-he wider section?

  An ideal fluid flows at 12 m/s in a horik8v wugwet j9uwtk+ b1 +:w0/uzontal pipe. If the pipe narrows to half its original radius, what is the flow:e9tuvk kwgj81w 0/ +wubw+ut speed in the narrower section?

State Bernoulli's principlegi5mea/9 8 5bemhf +f1jwa s,u.

  Which one of the following is associated with the law9: toyy nit 2:wzdwhtg() ;7uc of conservation of energy in flu:gw7y : z9ithtwn yo)(ctdu2; ids?

  As the speed of a movinq8cr xa.i7cv +:nb ewgi- g4/wg fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter 1dl 6 g/kq3 kbp,h)*moji098of idittof the pipe at point B is larger than at point A. Where is the tqh9 8l3mi,/jtkoigipbkfo6 0d1d ) *water pressure greatest?

  When you blow some air above a paper strip, the paper rises. 5gvcsg(; ul7qThis is because

  A sky diver falls through the air at terminal velokyq)umkt.38fezf ;0 xcity. The force of air resistf fykkz8eu0txm)q; 3.ance on him is

  Two Styrofoam balls, of radii R andv* tr20f uj) +en(oxarij-w 3m 2R, are released simultaneously from a tall tower. nimfa+ je*o-r2vwxu0( t3r)j Which will reach the ground first?

  When a small spherical rock of radius r falls through water, it experience zwl9zs-5j 11z469 wj:,nkro v)zwdp p6rycwks a drag force v5jzr 6-w)w4,scdy rp9n lk11w6 kpzzojw9:z$F=arv$, 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 fl6s entf4;c(b* kg qz0now of fluid through a narrow pipe? That is, if y qfkstzn6g0eb4*n(; cou 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 lengths*qs ldi6ieo4t7 68ke, but pipe B has twice 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 pi74 *soi estdel6 q68ikpe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, but pipe B is twice as 0gleppr(91:pd b7coyb o4y u*d7mu , klong as 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 B is Q, what is the flow ra o(4 rbey7:u9g0boc ldp pm17*kpyu,dte in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems t s*/p2e6yqaqkn0f 8ua o be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in tenu2y8/ afkq*s6pq ea0 rms of

  When a tube of diameter d;;knndo n qajv:l.0z6 is placed in water, the water rises to a height h. If the diameter were h0a;ko z;j.lv dn:6q nnalf as great, how high would the water rise?

  Certain insects, such as /hb .e583a3 ns c+ybasvb*nflthe water bug, are sufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. l 3sb/ vb *8ye +.3nfnahasb5c 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 suffu q9iflqm o- ;o+1ka/kiciently 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 A is F. Now suppose that water bug B is twice as big as bug A in every dimq1o -ufklqk +oa;/i9mension. 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 q00qu+oo wn2(;agi/x.am q 7opmqo+y mass of 30.0 g. What is its densityawmqy.(m2 gonoxqa7 / + u;iqoo0qp +0?

  A liquid has a specific gravibgnqj32 /py); efvt6o id5rxg8k/gu( w,0fsuty 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. pvut r9 n lx(,k5a pf9k,n86mmWhat is the maximum pressure it can exert on a horizontal surfac9p8m 6vfuxnnktp ,5ma r,l( 9ke?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has,) +9 pvhgh vea63dzrz area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) mj sd*0q(3fzf nust a submarine withstand at a depth of 120.0 m in the 0s*j q(f dzfn3ocean?

  A circular window of 30 q4mk*(31ft;h ,ov j khww l0qfcm diameter in a submarine can withstand a maximum force ow 3, *04jwhvqflk tho;mkf( q1f $5.20 \times 10^{5} \; N$. 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 pvsb*u4wf76 z oressure is 300 kPa?

  What is the gauge pressure at a locapq*+-n mu a5zy 9jfg1jtion 15.0 m below the surface of sea? (The -+apm9 jqzf5ujn1y* gdensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.t/fu4 lpd e4pt.q nz8 o1;fzf ;*duzq.0 m below the surface of sea? (Thuzon4lq qtzf*/fd4d p. p;t1. f;zue 8e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the 5rv/x neh)ih prq(hg859 9vvh small piston of a hydraulic machine. The small piston hhpr 5rv iex5hvgh( 9/v9)8h qnas 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, t8gv*b9ozh aw 5he small piston has a radius of 5.0 cm and the large piston has a rab9 wz58gov ha*dius of 15 cm. 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 bz *r,n;nn*6gu kcq(nby a 25 cm diameter hydraulic piston. What force needs to be apu6(nq nnbr g**k,;nzc plied 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 larg ajn:ag0u/*7j,y;jth gsigu5+y-v dge piston has a diameter of 40 cm.dg,- /g*gyjn;iujas 0ga7v + : tj5uhy 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 aite9ikju)t5 p (r and 30 N in water. What is the buoyant force of the watju(t9 )5ipkt eer?

  An object has a volu08 lzvl a, hjzdq3o-8ume 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 by a string whilk6)rz qz8,f vy-j 8zaue submerged in water. What is the tension in the string6q8uyrzkfzv) a8,z - j? (The specific gravity of iron is 7.86.)

  If the density of gold is q), da9vql)/hzg c qh,9t/ze gc +rf;l$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subteb ff3yd c s8hc8)2i;marine (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 iu;y1ziw 9jhf *9xvop1+7ge oy t is immersed in water. What is the specific gravity of the obje 7j*fig1e 9;1y+hzouvw o9 xpyct?

  A container of water is p/o hb, 5-p3hwcncxpf+laced on a scale, and the scale reads 120 g. Now a 20-g piece of c cb-fx+n/oph,wc p35h opper (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 densi4 8kalq1fgha gsv ynr0t464bpo1n /k/ty 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 len7.feffbv(h ugk 50sk )gth 12 cm and diameter 2.0 cm will just barely float in water. What is itsu .gkkhfv70e(f f) 5bs mass?

  A rectangular box of negligible mass measureg1 2sd 9ipo)vjs 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded jod91 sv2)pi gonto 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 8,yk 5yh mavbza c/t-5the surface of the water. The weight of the displaced water is 2000 N. What is the weight,-y8kyc5a bz/5 vtam h of the object?

  A solid object floats in water with three-fourths of its voluvla 7rv1pzniko45n u(t.- -yrme beneath the surface. What is the objzin7pvtov4 a.uly-(1knr-r 5 ect's density?

  A 200-N object floats wit*h. - 4buuzqhvh three-fourths of its volume beneath the surface of the water. What is the buoyantz*h .-h4q buvu force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thikpm8c3l-uyfg -/ws1lf + oxb (ck. What is the minimum area of the floe that will just support the bear in saltwater of specific gravi8 mgusfkw l f1pl x3/yo-c-+b(ty 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diamets3mc(n s7ay5zaqi m 5g2wif vnd9;f okq*)y63 er 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There7kp5 f1 *iwbqnaj5oiwh /n aj4uai4*) is a 2.0 cm diameter restriction in the line. What7a4wa jnna5k f o)wp/4 bi 1q**ih5iju is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wiob 60(y)b u1r 3 bh4k2qqgpfxwth 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 rthje p p2+u9,08 bhbnfor a pump to supply a drinking fountain with 300 kPa, ifbtreuh2 j+ ,p bn0ph89 the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tgnj9:p u3uqz k.53bti n ;z4juank that holds water at a d ;4t3ijuzn.9nq5 g:jkzbp u 3uepth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe (iqc 6.(gzrmzb0tnqcum gx7 p :b/20qof 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 vin rss kl9j+go0n,(q(rscosity of 0.20 Pa-s. How long would it take to pour 4.0 L of oil through a funne (sn0k(srl,rg+9 qon jl 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 ouxiqa s5/sxu5,y+- vvn 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 maintain a,vasqu/ +iu 5s5 v-xyx constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice ,n57um,pyo8ht aa *lathe diameter of tube B. If water rises 24 cm in py 5ua, oal,t*h7mn8atube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a capi9puv-sx) hhc6a h5 mh7llary tubcv7h 5shpxam -9h)h6ue of diameter 1.2 mm?

  232

  To what height would wa5m6pfbzv)yb. 2tdll: ter at 0 degree Celsius rise in a glass capillary tube with a diamet2lm 5)b vt:ybdf6.lzper of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in thel5fpc*z- rokx 4e 8yy)*7urit tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowered to one-half its original val r8rpy7fzx*oi5ly ) t -k4c*euue 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 *(tm j.weni 4)+ f7usn5tdxxim and width 0.600 m with a soap film formed within its confined area. If the surface tensx(wdf*it5 un mtis. )7xn+4j eion of soapy water is 0.0260 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 builphh 76 s(2naw-;t:eucl6hz gc t 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 that the frame is z 6wh-th2;6s(7c a:ehunc g pl12 cm square?