The three common phases of matter argfocjl7;kz 03 (hn(xy e

  Density is

  Substance A has a densievr1 +ge,uc2:pg8 ra( fc9dac ty 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 pr21 n9e/pdrze pessure?

  Consider three drinking gla)or6 ufx)ipk o*; ifcav/7sr+mtd0-psses. All three have the same area base, and all three arer*s v0r+)iopik-tc6m/ d ;o)a7fpfu x 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 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 betwee7amwo, +hoixh+u p9ae3ol 3krx1 (q +gn the pressures inside and outside a tire called?

  When atmospheric pressure changes, whatz f1hjnuvvgds(- /5f 5ru 44zy happens to the absolute pressure at the bottom of1hfsu4/-f( rjn 4g zzvd5 yvu5 a pool?

  You are originally 1.0 m beneath the surface of a pool. If youah.pd: 7fah0uam6 jg/ dive to 2.0 m beneath the surface, what happens to the absolute presj0h6 a 7/haf:.ugmad psure on you?

State Pascal's principl6 coi3 2tpxzjaj )x,o5ga1nn) e.

State Archimedes' princ85 wk8ou peb.iiple.

  $50 \; cm^{3}$ 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 dexpysbla yu t2+n5/(:u+: qqm rv+7xmnnsity, what happens to the buoya:m 52:amxx v+q ur t(y7qus+pbnl ny/+nt force on it?

  Salt water has greater density than fresh water. A boat floatvxp5lx9 /q,tvz g5 h4i *j3nlus in both fresh water and in salt water. Wher5hjg,/5tunl4v vz*qxx 9 lp3ie is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in fj ur/qxsn y46-1 hws6 6pdoxdz)o z6,/tspf;both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water is)q ur;xx sswd/fj6o/d fn41 p zo ,zy6t6sph6-

  A steel ball sinks in water but floats in a pool of mercury. Where is the1ij2lrp m fe6x*r q4o; buoyant force of4l2je o6;1rrxipq m*n the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lazb7) f :nvpijwu(y)/b)l7eoq6 0ahgnke, right next to a 10-kg piece of lead. Which has the greatepo bvwi(lb)fn:7u 7/y )0g)ehznajq 6 r buoyant force on it?

  A piece of iron rests on top of a piece -8l .akgb5anrsb l2 ;,hu m2xqof wood floating in a bathtub. If the iron is removed from the wood, what happens to the w2,qs82bbak l;lgm.xr -nh u a5ater level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood1ks 4(vfx +-l4lolnh m sits on top of the first piece, and does not touch the water. If the top piece is taken off44lo x+vsm(fn-l k lh1 and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. The diabl :cwog8k( g*meter of the pipe at point B is larger than b 8gc*w:lk(o gat point A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If cb)6(;gq e mi3egq 77kv*w softhe pipe widens to twice its original radius, what is the flow speed in qkei w3f;go6svg* 7mec)(q7 bthe wider section?

  An ideal fluid flows at 12 m/s in a horizon -shv2 wmadqx 5d/)dx(tal pipe. If the pipe narrows to half its original radius,dw)- /2dh(x xv5adqms what is the flow speed in the narrower section?

State Bernoulli's principz1t6e2co az+cn vrcg88 /c,ks:eqk3 o le.

  Which one of the following is associated with the law of-w6s swb9o be( emhfxbn9b( qd 2nyv,c:;40jj conservation of energy in fluids?e js(;9qx,b4 wjhbb6wynf9b 0ed(:osnc- v2m

  As the speed of a movint;/- hw/ z *s rx+jc2dj7lzeovg fluid increases, the pressure in the fluid

  Water flows through a pipe. The diamet+bl,1l skmt2c otb/.*bkpb v -er of the pipe at point B is larger than at point A. Where is the water pressure grl/-,pcb bt.m 1kok*vlb2 bts +eatest?

  When you blow some air above a paper 5 /uchyibzg;g*x8kicc rkov- 9e(69astrip, the paper rises. This is because

  A sky diver falls through the air at terminalud0*at)od5c7t y zeyue1l.oa p*.6pd velocity. The force of air resistance on hiz7 tdaue)otlda0ey d1*y6*.uo p.5pcm is

  Two Styrofoam balls, of radii 9a9 ww db1;vscR and 2R, are released simultaneously from a tall tower. Which wilw;991wcbdas vl reach the ground first?

  When a small spherical rock of radius r falls through water, it ex jc.e;s 7io.wvperiences a drag o.ej;w7i .c svforce $F=arv$, 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 narrn()g5jl e9y anch8*m iow pipe? That is, if you made na ) 9*hcn8jm5glyi(ea 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice th 4lae0(gqs 7ose diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure diffe0 olsage47(q srence 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 twice as long as pip y*frz3/gpe k2e A. Water under2k gey przf3*/goes 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":mmr2 /mr0ousiydx b1n7(l 3n taste seems to be associated with oil spreading out all over the surface of the soup, 0 m/uxd r 2y:irs7nno(mm13lb 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 water rises to a heigh;fjcj+,ogy7g; jol 8-mvjc +ut h. If the diameter were half as greayj-cc 7jolvgju; j ++ofmg;, 8t, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lighnn,t5/ wjgoc-z+p ua95km; dhr hr1r,tweight that they c rz+dmrj, ph1, nwu - rknt;5ch9/oga5an 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, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently li :,9j4cv 9dqxn9a2w6 ueo zt0mw9udizghtweight 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, zi0:dq99mju vnew2da x4 6ct,uo 9wz9bug 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 k/y ykln2:t d+cm has a mass of 30.0 g. What is its density + /:kynkdty2l?

  A liquid has a specific gravity of 0.357. ,9jn,c vm: ,qma 1+lrm.j(fh7gf otd vWhat is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is th;jh2 u-n t4gzxe maximum pressure it can exert on a horizontal s 42z;ghjtn-u xurface?

  A person weighing 900 N is standing on snow7li uqy)0jiv;shoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a b;8ef:a:z0jh l,(eoqzn qxw3 depth of 120.0 m in the oceanq8ee:,qzf;ln: zhw j o(03abx?

  A circular window of 30 cm diameter g7(1 3-kkit;8e xz hpskq2nctin a submarine can withstand a maximum force oi 12t khe 73;8t(gx nskqkpzc-f $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure9u0kq)d+lc mr.8dq l k if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? (siy eo8,+lh(-1ixno /uss .v s q5wu,lThe density of seawate51l/s( o-n q,sx+s vh,ou. 8yeliw suir is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of seasizwdg iq74.483t qa k? (The density of seawatdq7.3 4kt iagiwz q8s4er is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the smalli9smnb7jy a +ei*wq71 piston of a hydraulic machine. The small piston has 97nimiw+bs7q* a y 1ejarea $2.0 \; cm^{2}$. 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 ofi*/b4l1 3/akdqab dcv 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the small piston inavb/d3a/ bdqi 4k1lc* order to lift a car weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be liftedks--kk*rsvtj9 9ex (wiayyr5 .q:l:w by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter pis5.w sl vkxj:-rk: (a k-t*r9 w9sqeyyiton to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its larg. 1,ed.wa+tb1rha sju e piston has a diameter of 40uwh1t1d,.. b+ja aesr 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 30 N in was4 z2c-:d( ckhrppou2 ter. What is the buoyant force of the wated-cr o(spu2k4p2 c:zh r?

  An object has a volume of 9ishu y )2ct2. y8olhtv3o7vm$4.0 \; m^{3}$ 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 whz4g -ntn:df q3t dm*)lile submerged in water.nq -nt4m )dg3 f*:ztdl What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of golp-f.7a7 u.+/ngkf spzk7axco d 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 submalub ,c:b;/q*7 fkajc rzlq+*arine (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 it is immersed;-vuq10 u;px(o j3yzud/r dq c in water. What is the specific gravity ofuxd01yp3rud;( z;q-qu /jc vo the object?

  A container of water is placed on a scale, and the scale reads 1pj8 6i)u) ftf-hv,gwj 20 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspjp 6g,-iuw8f ))hvjft ended 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 e-ptv xa8; hl.qtip:,.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 cm will just barelyz 3wkz fwmp: ,x*z18xb float in water. What isw1wpfz:kbm,8 z*xzx 3 its mass?

  A rectangular box of negligible mass measures 5.0 m lon-nlx/ nz6lm 3pg, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box beforezx6p-ln m/ l3n 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 sj. cbp-kygz.b:rd5 v)urface of the water. The weight of the displaced water is 2000 N. What is the weight oycdb g)z j-b: 5rvk..pf the object?

  A solid object floats in water with w1rt(7lnb6 9 kz/nhqj three-fourths of its volume beneath the surface. What is the objetj69lnz k/nr 7h (1bwqct's density?

  A 200-N object floats wif0s z-yt y1n3dth three-fourths of its volume beneath the surface of the water. What is ttfy03s zn 1yd-he buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. hpr7, z vzt rqm0m(:p+ What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is vmp h7r: r0(zp,qmz+ t0.98.

  Liquid flows through j yv37uayj4m.yn g ;+ca pipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4kx c*xkoz5 ts,sv2o.r 7aum -6tvqm 5-.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restrictim57xutsa-xo 5q kvt62rcm z-*o. v,skon in the line. What is the velocity in this restriction?

  Water flows at 12 m/xb*n k(*wm bscvm20r d56umt,s in a horizontal 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:jqd+ l(q a9*aos5c q3/upccs it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m aba /( jc*q :5dcsolscap3uq9q+ove the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage taw322p/x2c tirrdt4b snk that holds water at a depth of 15 m. At 2/2tcdr2st3rxw b i4pwhat rate will water flow out of the hole?

  Water flows through a horizontal pipe f88otm3ls .k2 r 5zdmwof 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. wq e2oe82 pvg(How long would it take to pour 4.0 L of oil through a funnel with a8p22 ewog(qev 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 ls4zg)k ;tp8j tissue on the wall of an artery decreased the radius pks4 ;zjl8)g tby 10%. By how much 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. Tube A has twice th:e ,,lqqhqz,t yr f,)ze diameter of tube B. Ifyz:qr fq,hq,,,t)elz 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 hi uise)9d20,3mpvypu gt(vfy7gh will water rise in a capillary tube of diameter 1.2 mm?7vyp0v pe,si32f(mydt9guu )

  232

  To what height would water at 0 degree Celsius rise in a glassjyzc0;.u. vl ue3 zd7i capillary tube with a diamz 3zlveduy7;i c.u0. jeter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the wate1egw eshn2v9a17 mo)cr 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 to12semh v o9e1 cw7n)ag the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width)f uz*y4oz 2gi(w p43j6wk, sp q)lhin 0.600 m with a soap film formed within its confined area. If the surfispw2h,n 4i) 4g* (kzql6fp zoyu3 )wjace 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,45c5pz b-jnrcoi t4v 12 cm 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 4nvot5j-z cpb,4rci5 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?