The three common phases of matter 2ju 3zh8g8d 3u8nzfpop rf6oxqf9g6 4are

  Density is

  Substance A has a densc 7xnu50,yjhyity 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 followic npv:r:g4 *cdhi8ik*ng is not a unit of pressure?

  Consider three drinking glasses. All three have the same areg.v:c l/ igy0bv48adgwn9ev j8 6ugp)a 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 tl4vg8)u c .n8 :w9 vgg0da/ye6 vbipgjhe 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 betweel..uarl/ce gl 5xdn( /n the pressures inside and outside a tire called?

  When atmospheric pressure changes, what dj3nl; v(jnx0 happens to the absolute pressure at the bottom of a j 0vj3n nxld(;pool?

  You are originally 1.0 m beneath the surface ofr/l y ju4ikt8i*ucp :)g9(vezokrd 08 a pool. If you dive to 2.0 m beneath the surface,lukk: roz*ei)/rcg iv04t 9djy ( 8up8 what happens to the absolute pressure on you?

State Pascal's principle.k8 hmfd,7paq1

State Archimedes' prih4 -fxxnw2k/8dvg.i s t 4tx5rnciple.

  $50 \; cm^{3}$ 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 oop ye 4zqx89)cf constant density, what happens to the buoyant force on it?y4p8ex zo q9)c

  Salt water has greater density than l:;b s-pdj1id fresh water. A boat floats in both fresh water and inj ld;1: -pisdb salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense thdl*7apnv30 at)vh 9dhan fresh water. A ship floats in both fresh water and salt water. Compared to the fresh watd3vlhhtapn7d*v 9a0) er, 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 the b eawc;-cf 3sy,uoyant force on the ball greaty ;cew-3 ,csfaer?

  A 10-kg piece of aluminum sits at the bottom of a lake, right n5kdk63ehxl1pr k 1fy2ext to a 10-kg piece of lead. Which has the greate 13kxkh6d 1rpelfy25kr buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bat9h1i x/l:t ckftq+kwel v9-m)htub. If the iron is removed from the+1kxlq kiv/tf:tw) hlm e -c99 wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. Ah;ts3uqnn- qn6w )w q. 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 ;q 6n) -n3wwtq.husq nwater, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pipewal *d9 9ui/pf at point B is larger than at point A. Where is the speed of the watew/*idp9 u9fa lr greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widen4bvi+r 8zhign 0u/y,k s to twice it/8nivrgiuh 0+,4 ybzks original radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s)sge4:3c g7hy tobwj.l51co9h c7wdc in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the narr oyj 5e )dc91b co73w:7gwlcs hht.c4gower section?

State Bernoulli's principlbw0 vo0z+ d e ubb0p)ib)jm6q6e.

  Which one of the following is associated with the law of conservation of eniq3e m15kwk 6w)h f;xr sip/x(u2zb.lergy in fl.ilpq(b s;2rwmuf 1 x)k zx/635kiehwuids?

  As the speed of a moving fluid increases, the p(uct6vjf a uf9,c+,clm s-p x2ressure in the fluid

  Water flows through a 2rx cl1vkhyu /bi. k/+pipe. The diameter of the pipe at point B is larger than at iyu/ 1.+rlcbhk2vxk/ point A. Where is the water pressure greatest?

  When you blow some air p-qwtul(, xuj ja96r /as5h)q(u3envabove a paper strip, the paper rises. This is because

  A sky diver falls through the air at terminalqhz95;fo 2 xef velocity. The force of air resistan9ef; qzh 5fox2ce on him is

  Two Styrofoam balls, of radii R and 2R,b 5+rl rd8 w*2zejitdpqk/5j0 dlu1.w are released simultaneously from a tall tower. t.1r zulw5 e w2jdi8ld/ b*0kd+ jrq5p Which will reach the ground first?

  When a small sphericalansslfy8f pdh:zvw8qg3, 2, 6 rock of radius r falls through water, it experiences a dr,,8g :pf3as yvq 6nszfh 82dwlag 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 fluiddvm9o c 9u4w2+ket *cn;6dafk through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cmd 92okf;cuavw6tn+d cek49* ause the greatest change in the flow rate?

  Two horizontal pipes ,w4qx -ijuz0z are the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acrosqzjiw 4z,-x0us 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 pipe u,o;ayunst.r/t4,gh uu 0laj88 f j.h A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengthsu.a. ,a gus4ou,ufrn0jt8t jlyh/8 h; 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 be ak/ix.w:9 pqx5- p pktwssociated with oil spreading out all over the surface of the soup, instead of staying in lit5w k qp.ti:-x/ wpxkp9tle 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 height h.7y);9 m rk zht.clmzf+ If the diameter were half ahmk9r.zft+) 7yzl ;cms great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that yd. zhe 2xxt93they 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, twice as wide, etc. What is h 32x tye9dz.xthe weight of bug B?

  Certain insects, such as the water bug, are sufficiently lightez l 7ngii594k */nzzo*) myce7wnwb(weight 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 suy /w*z 7nnbmzoi9 )5*i eenl4gc7(z kwppose 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 of 30.0 ts*dsi,yn. 2r g. drnst 2y .,is*What is its density?

  A liquid has a specific gravity of 0.cr-d;y y8 ni3p357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is th5n - ucsgn2s-2jk ko(l,tqrs)e maximum pressure it can exert os(5t2 ukq2-j sknscr lng-,) on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has a/(eupxjefgxfx;n ,ji2md 67 eoc6z,k ps7a(,rea $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 m zxzqc2d0 u 10 jgf+b6kin the o zjfzd0g0u +2xc6qb 1kcean?

  A circular window of 30 cm diameter in a subma1g9w)k/x8s3k l uo pgqrine can withstand a maximum force of 1s /kqlk3 )og8g9xpwu $5.20 \times 10^{5} \; N$. 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 h vd-wp qqw3n lf/ lwuke3 li: py*38v)1a+bn7pressure is 300 kPa?

  What is the gauge pressurec s05sfe8v vh, at a location 15.0 m below the surface of sea? (The density ofh 8evf5 vs0s,c seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below te))if6 yze;t xhe surface of sea? (Thezf);eyi te6x) density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hyd tb ur;+9)+mgeq iu8dq:ull/mraulic machine. The small piston ha:8 gu/m ul urmt+b;9deiq+ q)ls 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, th, zss6 gr0ygb:xcw +;le 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 in order to lift a car weighing 20,000 N on the large pwg 6+sl,0:gyczb;r sxiston?

  A 13,000 N vehicle is to be lifted by a 25 n t0 o0kdo.pb*cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to a d o.ntpo0*b0kccomplish this?

  The small piston of a hydraulic lift has .s. mv+xwi*rsa diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raise.vsi rs+x*w. ms 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 water. What is thets u1 ,8ta8eivrv+/2zv /i so8 b)mekb buoyant force of the wats/8u ke/mi28bo e+ s)8i,tt1zvvbrv aer?

  An object has a volu:2 +amn aklxg7me 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 supporecgu.cv 03a )t3git +*j4 o jkhhrd;9oted by a string while submerged in water. What is the tension in the ste+rtk )ch;o3gtu jg0*a9vd.j h4 ci3o ring? (The specific gravity of iron is 7.86.)

  If the density of go a;kh5 p)u9x kaq1pa*gld 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 (densit;qg vmlk oo8xrspph74+b8ees;- 6up-y = $7.8 \times 10^3 \; kg/m^{3}$) 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 and4) oql.idhul0 6.86 N when it is immersed in water. What is the specific gravity of the obqhiou4. )ll0dject?

  A container of water is placed on a scale, and the scale reads 120 g.vfy7,2sd 9c9czi j o.w Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a 9dio29czvc y7 fj.w ,sthread 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 aji: p o)jgab.08 nwkjt. :t2o5pwvji./ tff0 qnd 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 diankqo( o56kfl7 meter 2.0 cm will just barely float in watlfqo 56 ok7n(ker. What is its mass?

  A rectangular box of negligible mass mvcpm;58 qcdzck vzeui(26i3( easures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto thip qe m(c 6icc85k;(z z23uvvde 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 b0m wuo 6c22haxeneath the surface of the water. The weight of the displaced 6ac2wu02oh mx water is 2000 N. What is the weight of the object?

  A solid object floats +u5q36kkhh 5 cylq+ggin water with three-fourths of its volume beneath the surfa+ +gq5k hh 5y36kqulcgce. What is the object's density?

  A 200-N object floats with three-fourths of its volume beneath th07xv,(gspdli k3va x+ e surface of the water. Wh p(axv,3l0 dg7+kv sixat is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. W z z9zzzdp 6**d+wc+ghhat is the minimum area of the floe that will just suppoh z**9wdpz6 +zzzd cg+rt 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 m/s. Findy28g m45 wf ;a ns8yzw22viobr the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/sz59t jvp *t 9xfntx)t9. There is a 2.0 cm diameter restriction in the line. What is the velocity intf9 99xtp)5nztt*vj x this restriction?

  Water flows at 12 m/s in a horizontal pipe withcfov cnvg6p;*nfml 4pm j082+ 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 drinking fountain wibv2mvm69u xsgh j4jk 3a+(0xk th 300 kPa, xjj3sv0g6mb k 9xkm ha4u2(+vif the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank that holdsv)6 wzcb(k7jz water at a depth of 15 m. At what rate will water flow out of the )76wb(vk czjz hole?

  Water flows through a horizontadc 8dj,2 t99eztzb1vtl 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 vifziw5san59 s0 wwq7( mq*ja s:scosity of 0.20 Pa-s. How 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 pa0iqnms*( jw 5z75sa ww9f: qasrt of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an :hngjx5r4 hlw5) /njjxjgme:fw/+c8artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increamh gcnx:wgn5 j+h8 j:)rl4/x5w jje/fsed to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice8 jnaldf5d-z c6y37p1m5c9 / afwjt vuwv7hz. the diameter of tube B. If water rises 24 cm in tube A,l8 6wm fzzjy1u padt5a -9c37jn v f.wdc75hv/ how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high d4s eq;zef; -axi*e cd )ilrh df4i9+;will water rise in a capillary tube of diametie il ;e;fcf+94;ei-h)x rq zddsd*a4er 1.2 mm?

  232

  To what height would water at 0 degree Cels +hnqed:f5kmba3 l-qouh ;3 5wius rise in a glass capillary tube withkh:5nb; qw5 f-uo3eql3ad+m h a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises iy nq*f *u fx4/9)d ifxv/qj5rvn the tub/*fvfvx5n)rxf9y d i4 qju *q/e 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 liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and widg*)ew6 ylahug4 : jj7lth 0.600 m with a soap film formed within its confined ar l7a6w 4ug* j)eyhgj:lea. If the surface 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 cm and width 5 cm, and is2j;w)cx,s exp hq04j t built in such a way that one of the longer sides can be moved without bursting the soap film contained in the frame.xtc0eq4w,j x;j h2p s) 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?