The three common phas 2ml0cutbrwa.) . tay(es of matter are

  Density is

  Substance A has a densi/ wv/6:vso:h+l q zihqf:toh(xi :zt3ty 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 followin*ei hgc4/n).wi vm -6u/tklkvg is not a unit of pressure?

  Consider three drinking glasses. All three have the same area:vehu.ke+uy9 u d f,m3l)5ene base, and all three are filled to the same depth with water. Glasse e+5fu)u9ndemueh,kl3. :v y 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 pressures5b/dyghrqh c24ja :*1i +c8w/txve k n inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute press t + u;akx(azkkcs;ik25p1zc0ure at the bozac 2u0 x5s kc+;k ;(izkkatp1ttom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you dive t58bq 3yh2a nyfo 2.0 m beneath the surface, what happens to the absy23h n 8faby5qolute pressure on you?

State Pascal's principle.reshiufu ar i7+5cqq1r2l-(e x b821v

State Archimedes' principle.cozrzt fmt8,.*-.m / y nqpl:v

  $50 \; cm^{3}$ 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 densityba7:ytn 2ff,g, what happens to the buoyantbgy:72afn ,f t force on it?

  Salt water has greater density than1lxbn9.wwr5jh ++g k/hc- iex fresh water. A boat floats in both fresh water and in salt wax1 whr/g 5w .kjci-x+hl+e9n bter. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh watxv6clwfen ,kwef(,*t*x frb9 b/ 24feer. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt watercw*evfxxrf bl2 k/ b9fw4f( ,6,net*e is

  A steel ball sinks in water but floats in a pool of mercur0+7 k6 zzaawqwb8c 6qly. Where is the buoyant force on the ball 8czwb0z 7qa k6aw+6lqgreater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right nexd, *qi7vsyj-v t to a 10-kg piece of lead. Which has the greate iy v7dqj,sv*-r buoyant force on it?

  A piece of iron rests on top of 9 ulhsojr. -/aa piece of wood floating in a bathtub. If the iron is removed from the w- jlau.ro 9h/sood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits od.t/g jispa3vx3.h.u vn kp-, n top of the first piece, a.i h 3/uaxn d k3v.-,gvtsp.pjnd does not touch the water. If the top piece is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diamete ft;n7di:xfme0e ;xp 2vxd,w :r of the pipe at point B is larger than at point A. Where is the speed of the;;mti 7:f02wdpxvdxfe:nx ,e water greater?

  An ideal fluid flows at 12 m/s in a ho5vi.ucx4sggo3br 1 s+ rizontal pipe. If the pipe widens to twice its original radius, what is the flow speed cu +g six41.srv5 o3gbin the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If 6.t(m9 bx efv/u(bpdbthe pipe narrows to half its original rabp/9 xebbum(6 .v(d ftdius, what is the flow speed in the narrower section?

State Bernoulli's princ,iese lvg 4 qt*,svz1:m8yi)ciple.

  Which one of the following is associated with the law of conshhd78+vsr uv s.;:fwrervation of energy v8;uh:hss rr+vw f. 7din fluids?

  As the speed of a moving fluid increases, the pressurajlf k16mkg x0knf9.fw;)govk )o/z .e in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is ls4 jid9nzr p;g a;;;zxarger than at point A. Where is the water j9 ;pdzgnaxs;4;z r;i pressure greatest?

  When you blow some air above a paper strip, the plr2w fa0mi9st-hg8z 7 aper rises. This is because

  A sky diver falls through the air at terminal velocitfmduoxxf .u4-m1e a8 .y. The force of air resistance on ha .xd1 fm8- mxe.o4uufim is

  Two Styrofoam balls, of radii R and 2R, are released simultaneouslt0(utpnx85s z*i)k r dy from a tall tower. Which will reach the ground fi (d5zu0x tt*r)i8nskprst?

  When a small spherical rock of radius r falls through water, it experienjt(4msr ta/6i i ;ju;yces a drag(tsj6m4y/rii ;t ;a uj 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 ondmq14tjqs/yyy 2 *qpkt 6kb8( the flow of fluid through a narrow pipe? That is, if you made a 10% change in eac sk1kq qmqp j2/yyy8( 4db*t6th of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length,h /-so ,inic (zps8dp- 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 rat(p scz8-psdn-i i/o, he in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diameter, byht* ha:t mezg f**3u az jo3e92pj5:dut pipe B is twice as long as pipe A. Water undergoesa*:ohjh 5ep2u3 y*a et* zg3tz:fd9jm 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" taste seems to 3gg1 ch9.,ofen jism, be associated with oil spreadig1ifjhe 3n,cs 9.o,gmng 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 diameter d is plaiq*qw)b t: /4z x5qv fwf,mrd7ced in water, the water rises to a height h. If the dx*izbmf/t:wq 5f q,wq7)d 4vriameter were half as great, how high would the water rise?

  Certain insects, such as thed: o;*8lekqx- u5 m vh49qqybt 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 dimenqke tlxqudomq59; 8y:v bh4-* sions. 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 lightweigty /f1eu 9t4- siwn*gvht that they can run on top of water without breaking the surface tension. This iig19vtnftu/ys4 * -wes 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 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 h2(*hcjw*i ne; sxql 8sas a mass of 30.0 g. What qls c2*8 *(xhijws e;nis its density?

  A liquid has a specific gravity.1y:9 i jxwo3-k +odasyudxh1 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 cvotsopc -8+o5iiu j:oj:0su. sc*taa8+0obom. What is the maximum pressure it can exeto8vo *jbu os0uio +t s:aa ji+0.cc-:po5 os8rt on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each0 .wp t3 (fqxgbm9n9wu/dtpg 9 snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a dep+dih 7kj 7rv2zo-p2 abth of 120.0 m in the objd7h+a 2ki7 pvrz2-ocean?

  A circular window of 30 cm diameter in a subm7u-vkae a2y,df /m3n;y, ur vparine can withstand a maximum force o v / d2e;yr3,ufa-m n7ukva,pyf $5.20 \times 10^{5} \; N$. 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 kPak+f)( *maoh ij:pc1p )dvsk:x ?

  What is the gauge pre mym9t2 la5+oiq ca39cssure at a location 15.0 m below the surface of sea? (The densityaca59 mqm9+3otyi l 2c of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m 38 khyj;m,aki below the surface of sea? (The density of seawahaym j,ki;k83ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraujz h 3jnk6it 1ul(-pk)lic machine. The small pistoip t)6-nu3(kj kjh l1zn 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 j mim rvq/4j7s d0(qsr5yh00ylift, the small 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 in5m 7m4ysivhrq/ 00q j 0rdj(ys order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be 9.gh8g2ehawr lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter pistog9h .e8rga h2wn to accomplish this?

  The small piston of a hydraule4nh7,lso5eq ic lift has a diameter of 8.0 cm, and its large piston has a e5qs4le 7o,nhdiameter of 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 air and e2r71yz3g u n6vk5d ti30 N in water. What is the buoyant force of tv3g16y5 72zeud n rkithe water?

  An object has a volume ofw;hm/z2 l53ftstas+q $4.0 \; m^{3}$ 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 submerged in wat )e 5d)(zc8fepqh4 wxper. What is the tension in the string? (The specific(wzhed4) 8) e5ppfxcq gravity of iron is 7.86.)

  If the density of gold4 tcgtkw u6 4i*0: ocqs*eg3je 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 (denc+e7qm, kta8 ysity = $7.8 \times 10^3 \; kg/m^{3}$) 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 7.8juyoq 7uw: zm1i*nr: c.8kmp64 N when it is in air and 6.86 N when it is immersed in water. Wharu p*ijco mmu 86:1:q7ywk.nzt is the specific gravity of the object?

  A container of water is i y.o6 n7jq8j4ohqs7tplaced on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not touchin os.ty6 nhjq48qo 7ij7g
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg5g7ii glvs23 +pd7i w v9-51of fibwsx 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 cmj:bcwm*d 9 y5;hqz*wv and diameter 2.0 cm will just barely float in water. What is its ma5y*b;:h 9*cz dmqvwj wss?

  A rectangular box of negligibluute2o7 hfs1jhm 27 z+e mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many +fz h2euth 7s2ujo1m7kilograms 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. pp kskq/8 .vni:lo o ,w.t+f5z The weight of the displaced water is 2000 N. What is the/ t. vi5qk,k f:o.plw zn8sp+o weight of the object?

  A solid object floats in water with thxsl (cbp-;2ka ree-fourths of its volume beneath the surfac(kap2xlsb -; ce. What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath 1 rl98lh,fz+euor to;pbor,ees:n*, the surface of the water. What is the buoyansn9;,p r1+rez, o,e* e8o o:hrbtfllut force on the object?

  A polar bear of mass 200 kg stands on an ice flo o zbb4+sik;z5zxx(.ke 100 cm thick. What is the minimum area of the floe that will just supporti(zo5;z 4ksz.bkx+bx the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 keqt fn(x)kw+)4r.p dm/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter1tj4 : x mmydmkt5q(z3 pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in thi y 34(td:zm kq1tj5mxms restriction?

  Water flows at 12 m/s in a horizontal pid3dqi oo ;* :bf4 /xzlyrn)w5mj-rhh4pe 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 fn4o+ do1elc-d or a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above the-nle cdd oo14+ pump?

  A hole of radius 1.0 mm occurs i +y8 x*yui:zk zkpufb9vtcka) )r9- y9n the bottom of a water storage tank that holds water at a depth of 1 cy9up a))9xrtvzy*9 ik8-k+ub :zykf5 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional ayr42 a9 g4myyye1hbhm1+jxs v-g no(0rea $10.0 \; cm^{2}$ 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. t,b* 3v9b kaf 4ze0(esf.zns oHow 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 ket(n4zsb v,of9 z03a fe.s*bdrag effects due to the upper part of the funnel.

  Suppose that the build-up of f y.vl dh8na;9ake :ov(n v:6pratty tissue on 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 constanaa(vek: ;nd9 .l vhr:o8 vnpy6t blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diamete9awjst6 cmip+k./y.f r of tube B. f.csta/w +mj pik6.y9 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 high will wfg) f .ehyg4pv(729ns lez)q.z cck6dater rise in a capillary tube of dia hl24(f.knsezp dqc )fc7g v) eg6y9z.meter 1.2 mm?

  232

  To what height would water at 0 degree utns6lks/a( iib7;-zi j9ds1Celsius rise in a glass capillary tube with a diameter ozsjak67 b1iiuss9d-( ; /tinlf
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wathtsl lr s1.-op2tl.zjv9 /g 5der rises in the tube to 4.0 cm above the level of the dts.zj/.tp s lvl2g-l19h5o rpan. 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+*(tq f c-.bhugk z*pq and 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, how much force d zuq. cq tgfk*-*hp+(boes the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm andovae 67jew 9v7 +r o)f:xmj6ef 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 xr 67 f7j6em):o9f veovw ae+jto move the adjustable long side so that the frame is 12 cm square?