The three common phases ofbm) u5e2 l*dho matter are

  Density is

  Substance A has a density ot5 l d d,kitnq,xx8,m2f $3.0 \; g/cm^{3}$ 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 pressure?x :cgn5 8r.d ff3f2fjmo*zks2

  Consider three drinking glasses. All three have the same area base, and all thr9 c704 iql n)d2rutoetee 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 mor t tn4eicdq0l7) r92oue 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 jvlv26j0vj /vj ze64xj5.un j between the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at ujutdjy 4:3/py0lb+v the bottom of a poo+03u d lyyv4pbuj/ tj:l?

  You are originally 1.0 m beneath :1tz . svr rc f,21cl+f5ogbl9 txjh*nthe surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolurnbc+ 9frftl.o zc*1 1x2lt j5h gs:v,te pressure on you?

State Pascal's princip d6:tnfdk(v e.oot 0w)le.

State Archimedes' princwrl- 8/(pafanawkl(u)5 bo 2viple.

  $50 \; cm^{3}$ 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 deepe)p/0xpcxh fq;uju* *(. . oevmbigwa+r into water of constant density, what happens to the +0qxfpu g/ x*h em( jc.o.i;b pa)*uwvbuoyant force on it?

  Salt water has greater density than fresh wanuf*/+-ltaqf ter. A boat floats in both fresh water and in salt water. Where is the buoyu+tq f/fn-l* aant force greater on the boat?

  Salt water is more dense than fresh water. A) i0ea.rzgf9:ermyvzt2 l/sx5z+x 6 d ship floats in both fresh water and salt water. Compared to the fresm9ys6if eaz./+ 2e t0):xdxrrlz5vz gh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of(zn: dyw.,w obacz.s. mercury. Where is the buoyant force on the balw(wzb sz y..an:oc., dl greater?

  A 10-kg piece of aluminum sits at the bottom ofsb8a zqe )0d xd0cq5a)4ws y3l a lake, right next to a 10-kg piece of lead. Whichw )0asbadxq 3sd5z lqy)e08 c4 has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtgzc7;c3 pzr2r5h mrv. ub. If the iron is removed from the wood, what happens3c2.rgz vmhp7;5z rr c to the water level in the tub?

  A piece of wood is floating rka2wbdes 9d(8kxb13 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, web2x8ks 1 3kdrb9( dawhat happens to the water level in the tub?

  Water flows through a pcig)q alk3x5pysq23: ipe. The diameter of the pipe at point B is larger than at point A. Where is the speed of 3psq kilq5y: 2axc3 g)the water greater?

  An ideal fluid flows at bf t2xbp (xc2l55q8 an12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the widbcq8 a2 (2l55ptfbxxner section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe naxlklhlaaxza ); jvnz45*j90:rrows to half its original raln hz9vll4 5ja* ;:xka0 ja)xzdius, what is the flow speed in the narrower section?

State Bernoulli's principly i2y)dqlu0x+ j.:s0clhe s5 4,uuazfe.

  Which one of the following is associated with the law of conservation of edhb58uixu:x , 3(u ssl, p)vd wj1gh,iibd2u8nergy in flugbx)x3:jhdp 2uu hv1u ,i,( di5bw8ul8si ,sdids?

  As the speed of a moving fluid increases, the pressure in the flu njylw5l+lzlt 0 o65v2id

  Water flows through a pipe. The diameter of the pf60vbqo l, nx4ipe at point B is larger than at point A. Where is the water pressure greax4 ,n0qv 6lbfotest?

  When you blow some air above a paper strip, the paperygoa- ,u :mz 1;z1zcpx rises. This is because

  A sky diver falls through the air at terminal velocity. qz;fd5mb f2uo b)4l5s The force of air resistance o bb4 5lsmfo2qz d)uf;5n him is

  Two Styrofoam balls, of l+d ) a6j 4ccss2cxz;l:d)hhnradii R and 2R, are released simultaneously from a tall tower. Which will rea xdd2)hhcl+:sj46 )cs nlz;cach the ground first?

  When a small spherical rock o; tuahm:sf 8a vbu2y u;go3,k.f radius r falls through water, it experiences a drag forceau;vahf;yk. m3 u8:ub2ts,go $F=arv$, 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? 5kks 4xkkf-elr;vv : :That is, if you made a 10% change in each of thve k-k5f:vxsr;k l k4:e quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes arynd -:o +sf7,p ;qavg)ok*pxx e the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipesood; g,fv-s+ xn:pq y)kpx 7*a, 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 to//3ez x rc j2zkicl wt.a.xg8 2*ang-he same diameter, but pipe B is twice as long as pipe A.z /xgjczg2*r.c/i2- wxoelat8 nak3. 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 rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" tast16 md4m/rd/29fa sslp0d hurle seems to be associated with oil spreading out all over 9s//mddrl1r2 dpla0 hmsu 64f 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 diameter d is placed in water, the rz87c 6uwlu+u water rises to a height h. If the diameter were half as great, how high would the water risuuw78r+c ul 6ze?

  Certain insects, such as the water bug, phkusq74 g8;w 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 dip h7gs8wkuq; 4mensions. 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 bu7)m.r.sm jthtbg 4p/ zg, are sufficiently 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 suppos.). 7hrpm 4zjsb gttm/e 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 of3m1mjyxarr6 p oqq,3 7mtl3k9 30.0 g. Whar r6t9,m qqk la3pym71omjx33t is its density?

  A liquid has a specific gravity of 0x +am9*r)f tpk.357. What is its density?

  A brick weighs 50.0 N, and xy n.+kg)p3wug 6i e4f cjtv:/measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it cacv6: i4 t/y +.jwpxkg)fg3uenn exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe ha9/v qdgcw0x9uk63bb qlbpc( +s area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.02w tvo6 fw.. l:rwnqhc5(ckr4 m inwh24 5wf6lc(kt .v on.:wrcr q the ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum o ymbe;sz 6r2)force of ;)yb 6s2r ozem$5.20 \times 10^{5} \; N$. 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 absol;np 1.reftg 5m+z1a ylute pressure is 300 kPa?

  What is the gauge pressure at a locak02p;w/ bk 0en9wzcdsuy-o i3tion 15.0 m below the surface of sea? (The wzou/kn; 00- 39wye pdsc2ikbdensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m be(cr80eq)4j buinejknm w5 :3jlow the surface of sea? (The density of seawater i5 3cw jm48r0ij(n:jekbu qn)e s $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic vzoko ( hy7d1:a6muo*machine. The small piston6d h( oy*k7avmoo zu1: 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 (uwk m5q*7w dscm 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 s*uw(m7qdkw5 the large piston?

  A 13,000 N vehicle is to be lifted by a 251erq*d1cayt6497 gmmw c;y os cm diameter hydraulic piston. What forceo w17;d1g cm64 cs tmary*yq9e needs to be applied 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 lar)qse xo7gq 1(qdy5k+pge piston has a diameter of 40 q+e5pdy)g k sx17qoq(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 +33yrnkrjx7 t8bona630 N in water. What is the buoyant force of thnj 368brroa+knx3yt7e water?

  An object has a volume,h 7s wi)ctzeb (v58my 2o5gma 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 while 7wvyfk,n; (449xi ) v sqjxnwisubmerged in water. What is the tension in the string? (The specific gravity of iron 7n),k q;yis9w (njx4vx fvi 4wis 7.86.)

  If the density of gol+czygw80ad2d lg c(z-u7 rq8 zd is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (1zw)-njr8: uj nu tjgy bp/7w0density = $7.8 \times 10^3 \; kg/m^{3}$) 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(,e8jrhja mm .z,juz7p us8e)6 N when it is immersed in water. What is the specific gravity of the. j zu,8j7j ,uesmz8pae(r)h m object?

  A container of water is placed on a scale, ax-,i t6 /rlqn3 e zckm19xm4nond the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread an4rkqt3ni ml - z/91m,noe6xcxd lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum withvtq hejz/ c(/+ 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 1ip+o*i:op7f he+ u9 ,p jgdes22 cm and diameter 2.0 cm will just barely float in water. Whapfu9 ee2dph ,pjis+i+:7o*g ot is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.50 j7e4q*dd 58fokbnaq ua )f,i,m high. Hoke f*q4 5a7i )f ou,qa8d,njbdw 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 t )y2 xj89qqievzwr; 3zhe water. The weight of the displaced water is 2000 N. What is th3x 8;yqizz jwev)q 92re weight of the object?

  A solid object floats in water-6)x,dkc fn)xs s0cxw la sp;ybgls9s: t-*7i with three-fourths of its volume beneath the surface. What is the object's densp xs-:*d); ,x7 lnsc)wxf9syg lsc0ba6 t-kisity?

  A 200-N object floats with three-fo dv*/mcja581lb ke+bb.wb-qfurths of its volume beneath the surface of the water. Whb1b ac-e qj5 mdw/vb+bklf*.8 at is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm th1g;2pth4;kh ylly 8oy1ag r5vick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.8yghp1yyl 21aotr4lkg 5;;hv03? 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 fzi+6dn(geq8-k joh u 4low rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diaz+b:hy4 nx3hu meter restriction in the line. What is the velocity ihz h:unx+ y4b3n this restriction?

  Water flows at 12 m/s in a horizontal pipe 3qhq:r78afav/j1 zj)+hfsyzwith 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 drinkss6z-zm wu1nkf u6 *3ying fountain with 300 kPa, if the fountainzs yu u3sw f-16zkm*n6 is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bott (lxck mv-)29)dhpql bl4bdb/om of a water storage tank that holds vbc ll) xqb9)kp(ld-hbm24 /dwater at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sepib qu-a3:lv;ctional 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(sud jbdx;q 6qft7o6) long would it take to 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 to the upper part of the fq(; 7s6)dfbjqdxuo t6 unnel.

  Suppose that the build njp/a58zgknj e6er(kp,em*9-up of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressu (e e*jnkjk89amnegr/6, pp5zre provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan odobvur2 k3yo2s-th*8) f g nq;f water. Tube A has twice the diameter of tube B. g8-;2hs)bku3 qv*2 rdoyfotn If water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How his+81h3 qe gamxgh will water rise in a capillary tube of diamet3+gexah1 q 8mser 1.2 mm?

  232

  To what height would watetznge2a 2c-u- r at 0 degree Celsius rise in a glass capillary tube with a diameteczue ag2-2nt -r of
0.50 mm?

  A narrow tube is placed vertically in a pan of water,m5o gjq1xiu26 and 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 of the liquidg 62x 51jiuqom column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with 9hj0 awhk7qg8a soap film formed within its confined area. If the surfghwjk 0qa7 h98ace tension 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 c1a 5vetq*hdvddtvx:fj + 65 3 h,tof0om and width 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 that e5fdd6015t fv t oa h*+h vj:v,tqoxd3the frame is 12 cm square?