The three common phases of mattercp.b :xia+gm 5 are

  Density is

  Substance A has a densit. zmeywp7( z283lnrnc;ys mf c :aq/u1y 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 al.iv 0m);)khq vm(t ,arulxu/ unit of pressure?

  Consider three drinking glasses. All three have the same arezhdb721ri-egw9y 5pt2 (v pkya 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 th21gw(re-zbtyyh75 p p2v9i dk e 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 calle*74qwyky glq: qb+vz;9 i d2atd?

  When atmospheric pressure changes, what happens to the absolutu u0 hiz .*c2+;tsagcze pressure at the botu. +sizact0c ;u*g2hztom of a pool?

  You are originally 1.0 m beneath the surface of nkz)h-e;r*vi ;5loiw a pool. If you dive to 2.0 m beneath the surface, what happ-5iri ezwko h vn;*l);ens to the absolute pressure on you?

State Pascal's principlo-d w7f5w lranzux gs4y0/5 ;te.

State Archimedes' principle.eg id)*2qjjzh4( a;ir

  $50 \; cm^{3}$ 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 itm2x zrph5)/ bnto water of constant density, what happens to the buoyant force o2 )/pxr5bm thzn it?

  Salt water has greater density than fresh water. A boat floatr +sc,r4amnbjvn : k3z8 b5v7ks in both fresh water and in salt water.,zk: v vm7 abrnk3ns8c+5j4b r Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floa pl0rmuowg .5*ts in both fresh water and salt water. Compared to the fresh water, 5rg ulo wm0*.pthe volume of water displaced in the salt water is

  A steel ball sinks inigqe hokk)9*4 wdz- tcxe5 b2* water but floats in a pool of mercury. Where is the buoyant force on the ball greateg) tk9* *we4 kx 5qbecoh2z-idr?

  A 10-kg piece of aluminum sits aug 1e.o gcec.p.guj0*t the bottom of a lake, right next to a 10-kg piece of lead. Which has the g1eugccg.*p 0g..ej oureater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If tqc8,slxmf pzdoiqet (jp) * :)*am 8)ihe iron is removed from qijtp:a,* )) cmz(dqsf*eio )88x pmlthe wood, what happens to the water level in the tub?

  A piece of wood is floatzl qhae2/f q1m 8jqe1/ing 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 t1feq l/mz/jq 12h8qeao the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point B is larg8.c /kd) .ng q+r1w9*vrmzo xcnyziz:er than at point A. Where is the speed.c18:9v.id)+ cmqo*nzzrx g w/kr nyz of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widdc ,w(ab - b 79p w,wbq)c,cv:y:gvehzens to twice its original radius, what is the flow spw 9 ,capv,q7v,gw czybb:bcw -de:h()eed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. h 4in. killn 2n,rgch1zsk-:4tz 4 )gaIf the pipe narrows to half its original radius, what is the flglzt2 -g rhii:s,nknz41k4) cnl4.ha ow speed in the narrower section?

State Bernoulli's pri6a:e .onxefsy . +fz+cnciple.

  Which one of the following is associated with the la.yv3ibb nhr (0b4ill0w of conservation of energy in fluids 4l b(yvbbin0.i 3hrl0?

  As the speed of a mog zh:0fo(ch cji10-tx ving fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at poi7swgmb,:uu m7u ns 289-coqlj nt B is larger than at point A. Whu 98,-us7cnums2lw 7 gjbm:oqere is the water pressure greatest?

  When you blow some air above a paper strip, the,hjl5h np wx.,4ihf8s* 9izf m paper rises. This is because

  A sky diver falls through the air at terminal velocity. The foen1 e( n1mv q)pjq+c.;ohw*m vrce of air resistance on him;o.h)qjm +cn(1emwq vv* p1en is

  Two Styrofoam balls, of roqe6v hu izy.se::70.zz6whg adii R and 2R, are released simultaneously from a tall tower. Which will reach the grzs6h qv.: i76uyz.geoew h0z:ound first?

  When a small spherical rock of radius k0j8p ofsrw0mz.f2/ i4kww */0 yvzhyr falls through water, it experiences a drhjw wy/fpwzo 2ik* r/vm4sk0fy.0z0 8ag 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 greatest effect on the flow of fluid throughs2c+ ds t vp7-)m9idb,oat px, a narrow pipe? That is, if you made a 10% change in each of the quantities below, whidsvpm+a9pdt-bt7, s)c2,o ixch would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipemk-4gtw uouz2a)7 0 sp B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subapz7owus mgu2 0k4-t)ject 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 B is twz(cv,fngb3d02l 4n aqice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same prenq c(,2b fzng0d 4vla3ssure 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 g 0mq/8lwjqt*o dxt+ 2lreasy. This "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 is readilw80 oxqm2d*j+ lq/ltty explained in terms of

  When a tube of diameter d is placed incp(h 4z6rwra+ water, the water rises to a height h. If the diameter were half as great, how high would the water risepr arcw+hz(6 4?

  Certain insects, such as zn vqk32 p3p1rckcx.sc8+bn+the water bug, are sufficiently lightweight that they can run on top 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, n+ bv8kcp1s3xk+r2n.cq3 czp twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficien/nzlu6 j;w mn/+h q/sp;keq9y tly 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 dimension. That is, bug Bsq; 6wkjl 9 eu/m/;ynn pqz+/h 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 h. iky5,now ygj *+;;; labiora mass of 30.0 g. Wi h,ly5 bg.;n+ooiray*w;j k;hat is its density?

  A liquid has a specific gravity of 0.35vm caenlv* 02-j*s e9k7. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0hf , :,u y-ezpdrl-j6br b9eh( cm x 4.00 cm. What is the maximum pres jh:h-r bzy-6,pf r, ld(e9ebusure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshos .tabs.gu7jy(xfaz z *w6.h 6e has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth:3w +j82auxby-- p jgqvn.lh e of 120.0 m in th+bj3q2 yhauwevj- xpl. g8:- ne ocean?

  A circular window of 30 cm diameter in a submarbd+n,jb2e n -r1 qhh)hine can withstand a maximum force of dn-r)bbhqn1e h j2h+,$5.20 \times 10^{5} \; N$. 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 kgq9 f-*xk 1tqkPa?

  What is the gauge pressure at a location 15.0 m o.3 ug*.buxs o; ys.yne6ah2l below the surface of sea? (The density of seawater es ub.;x6y sa.2y.luogn3* h ois $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sea? 8 v+my e)k7cgel atzl.ex -g6)(The density of e6)agec-l 87g .mekxlt+yzv) seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hyk(vziey4:n; cdraulic machine. The small piston has az(4kv;iec:yn rea $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lift, the t5;pd0mf i1er ,frif *9:lnvdsmall 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 piston in order to lift a car weighing 20,000 N on the l v fr9i,ri l ;f:mfnedd15pt0*arge piston?

  A 13,000 N vehicle is to be lifted by ff .xheylot7.8a( ev*a 25 cm diameter hydraulic piston. What force needs to be aeet.. 7xy8vf lf* h(aopplied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has azpa/ i9c*zkl51yjc* jc+ j s3y diameter of 8.0 cm, and its large piston has a diameter ofc lpj/ci* 3*kzas59zy1jc+ jy 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 ai 6 (hh,v;swgwnr and 30 N in water. What is the buoyant force of ,;gvwh6wh(sn the water?

  An object has a volumem)0pszp/n)f p m p22bne:p7w b 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 wyk7es +7 85ghqtonee,hile submerged in water. tn y +5eqk7es8, hego7What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is i sbq2 -treuw9z* 445-pph2s5c nqs od$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density x xgyn:9mj*/g = $7.8 \times 10^3 \; kg/m^{3}$) 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 /c5sak3ps6zq N when it is immersed in water. Wq ckz 5ass63p/hat is the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a rp5qz pces6-+c+ueh.b:;j;/vmp uaz 20-g piece of copper (specific gravity qs+ac/zeem;+5 :p v p-jhu;uz rbcp6.= 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 afylxnvv-7 s,6 d ng.6a+wz 7xo 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 cmn4p;vfou+ ,wz will just barely float in water. nwo;pv z,u4+f What is its mass?

  A rectangular box of4gkes y1k4r8ec(au w(ag w.d7 negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kil w4 ee8 ugra1w.ay4kdks(g(7cograms 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 6elyy st4+zmo,zipi ( r-.t2i:wp yv *the water. The weight of the displaced water is 20mzyv ( -yi* +4i2 wott.e6sp pr:i,lzy00 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volu si3gx.c3jv-. .htr zime beneath the surface. What is the object's xth zji3-g.icv3.sr. density?

  A 200-N object floats with three-fourths of its volume beneath thq +h1j7o*zh*/jaaojn e surface of the water. What is the buoyant force on the o o/ hjnqaajo*+h1 7jz*bject?

  A polar bear of mass 200 kg sne lb7 7qz5.srtands 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.n7r 7se q5lzb.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm .7spr uwxnk+vp9b: v di4h67qwt2z 4yat 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diajdfq 1(*,v4frpegms 7meter restriction in the line. What is the velocf7gvf1dm*qs ,j re(4pity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressu8 lz2zvvzey1g3tw+-xre 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 taj.sy s l :xo3rbl5;hc0ke for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m abovxh3l ;yoj:scr. sl0b5 e the pump?

  A hole of radius 1.0 mm occurs in the bu1 uut/1j*bb j u+ y9hrzf3e5cottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out o b5ju3 9 / t+zu1*cu1ebjrfyuhf the hole?

  Water flows through wc)c0 7pf sstk2 1h2ila horizontal 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 long would it take to pour 4.0g6hw++ g3b/(h6wg2 o 4mfscgo fo /fte L of oil through a funnel with a neck 15 3h /emfs+gofb6ofg6c4o(t +/ g2hgww 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 wall of an artery decreased *35g afudsol5 the radius by 10%. By how o5fug*ad5sl 3much 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.9q)a04jd v zqr Tube A has twice the diameter of tube B. If water d0a)rz9vjq4q rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of wat, vu18vlukzr azm6w.e 98s ux;er is 0.073 N/m. How high will water rise in a capillary z8wk;xrv.uv18eu s6 ma ,9 luztube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillar6.1oflb u* einy tube with a diameter oio n1*l buf.e6f
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water 5k hb9 2ethq0b:7uprs rises in the tube to 4.0 cm above the level of the pan. The surface tension in the bq9p 7s:tu her05b 2hkliquid 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 0.600 m with a so/vj l :no(i t:qtjujhq/u ,3i7ap 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 0.600n(jq tlj:t :,u/vj3 iqihu/ o7 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and is b0y98tc(8lco,d1t idqk7hhne b. v xw5uilt 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 12 y8iet cbtnk(vd,1w8lho .dc9q h7 x05cm square?