The three common phases of matterb+ 5 .(w buw)m2iyemqy are

  Density is

  Substance A has a density buhu*r 3-zz4c sck:n8of $3.0 \; g/cm^{3}$ 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 3ql72 uhjtknhclm8:8 u b,m-gpressure?

  Consider three drinking glasses. All three have .b 8sksc v,p.ai,i.efh5 ga(f the same area 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 h v,8k( .sic hsf5fa.iba ep,.golds 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 pressures inside and outside a tir/e c kzfgb7(l6e called?

  When atmospheric pressure changes, what happen7:o 09 z4qwf9g1lnxocq egr2 ks to the absolute pressure at the bo r2gexfoo4 q7czk gnlw90q1 9:ttom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If you d;gwcg5o v 6kr7ayz+) dive to 2.0 m beneath the syz rcd 6o+7v;w)a5kgg urface, what happens to the absolute pressure on you?

State Pascal's princix2/ 8k swqvpl*ple.

State Archimedes' principle qxskz)qa/k+d- 85yga.

  $50 \; cm^{3}$ 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 o d yl.x3 njzpix3w4y2;f constant density, what happens to the buoyant force on itx 4.w2l33;izyxnypd j ?

  Salt water has greater density than fresh water. A boat floats ing 2lh b5rx0y1q both fresh water and in salt water. 50xblq1ghr 2yWhere is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh wat0vczilo 8:.n6j ly,x 9s;wwyder and salt water. Compared to the fresh water,l0ys8lji w9zd ;w, :xo n6.yvc the volume of water displaced in the salt water is

  A steel ball sinks in water but floats wf n5qb 8fop*.)i ao ))zf0zosin a pool of mercury. Where is the buoyant force on bi*8z)5.sfzoan)wq) 0 ooffp the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, rige 7dlx8vm3i-a* : jkbwht next to a 10-kg piece of lea- a7vemw:3 kdb*xlj8id. Which has the greater buoyant force on it?

  A piece of iron rests )847(o m4mb xpdtlm6s fuy( ;8hhsgjy on top of a piece of wood floating in a bathtub. If the iron is removed frtu m8 lp;d x 6gyb()ohm(mjhss4 fy847om the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits 2 (nnhtbqnn-i1z d: ;eon top of the first piece, and does not touch thennezn hb2i1;nq -:( td 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 6x;5ot+g7zk-iv 0 1enb d sycna pipe. The diameter of the pipe at point B is larger than at point A. Where is the speed of the w1 nb k6e70dtx+gn5ic;ys-o zvater greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If thc5niep5 qq.xa2h 9 vts4fc 5x+e pipe widens to twice its original radius, what is the flow speed in thepaqx fvqi5c295ts 5c+hnx4e . wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows ;pb7xz hn-8zv gh9q:crb ks(2to half its original radius, what is the flowc8 b(q2zxz ;: v9pkshbng7r -h speed in the narrower section?

State Bernoulli's princs c)sg rw -,fglu-5ibaf782h ciple.

  Which one of the following is7 ny73dwh7xzmy 9b;du associated with the law of conservation of energy in flu7y7d79mzbn wd x; hyu3ids?

  As the speed of a moving fluid inc ;3pc*zcs q-55byiaqtreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is 4 -b(.omq ucwqpi:olu s*udf36/45 vahp: y drlarger than at point A. Where is the water pressureou 4p mv/*65owibqd3p::hqs- furduc( y.la4 greatest?

  When you blow some air above a paper strip, the pld r ao rt lyj,p++ cpd;9ir5n:;-vq8caper rises. This is because

  A sky diver falls through the air at terminal velo 4 b7jslnu3s sq6cb al;5yyz()city. The force of air resistance on him ls( 4 b) szu37y6nq5ba;slyj cis

  Two Styrofoam balls, of radii R and 2R, are released simultaneousu x4y(.-uoem s8xt+p+vq w gw*ly from a tall tower. Which will reach the ground firs-s.+xo wm(vg8x wu y+4pe*uqtt?

  When a small spherical rock of radius r falx)zw0 +2dfii*mcvbf/ (i 7zells through water, it experiences a drag forcz*v+m/0 )x(fdiibwl e7zif2 ce $F=arv$, 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? That l8+2: gkagpg6 i6,n0 yqriiw sis, if you made a 10% change in each of the quantities below, which would cause the gre8g 2psi yria0 ,w+:6 6kgqilgnatest change in the flow rate?

  Two horizontal pipes are the same length, bu0 yb+j ksgcoo1* sn2r/t pipe B has twice the diameter of pipe A. Water undergoes viscous flow cg osy0oj/ +s21knbr *in both pipes, 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 the same do mt4:r:z,cxp. u2h2n)zmwml* h4dh kiameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference)k:*mm2oxhd c42r, u4p lhzhzt n.w:m 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, iukrhv3ym 7s* .irj0 3v. rwe4xt often tastes greasy. This "greasy" taste seems to be associated with oilik wr 0.3v ejmxrhv3y s4r*7u. spreading 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 i51ijgeob/xh3nn.dfb* +k+ dnju/ ,hps placed in water, the water rises to a height h. If the diameter were half as great, how high would the water rise?hkfi,+1unxge b/p h 5d.j/nj+3bo n*d

  Certain insects, such as the water bug, are sufficiently lightweight that thej/cu90q 2hih rcp -t3xy 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 iq 9-j tc2rx c/h3pu0his twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently l99c/ )d mehgfgightweight 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 B is twice as)gc9 9dgh/ fme long, twice as wide, etc. What is the maximum upward force on the feet of bug B?

  A plastic block of dimenluwr-h xhp+(ofx78:n sions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is ih +nx8xflu p-ho( r:w7ts density?

  A liquid has a specific gravity of 0.357. z/cq v21ok-*ed*a t+/wnddz yWhat is its density?

  A brick weighs 50.0 Nurs63++. c-qgrupsn o 3trjy), and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it.336-s+jr y qtgn r) up+sruco can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has9x 2lyi- 0ppuynz4v1p area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand ag(53/atr a z).l1kde2brsrs1e c6 kkdt a depth of 120.0 m in r6a /dkrke 13dbc sz15a s t2e.kr(gl)the ocean?

  A circular window of 30 cm diameter in a submareu8rf(a -g umv5ou1s4bbn3i0ine can withstand a maximum force oosb-g(rubume 35ni1 av 8uf40f $5.20 \times 10^{5} \; N$. 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 ab 1k4 (5vo5p;ckult-act*.6 ly la oxhxsolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m b29, mvtwg*i lbxx4d)bufbl 70 elow the surface of sea? (The density ofvl0)ufi*,l wg72xbd9 mb4xbt seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface7iyoj fa5vra c+bbd y1- 0q5y. of sea? (Thia a+fyb-57 j bv roc5.yyq0d1e density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small l spjid07ua- o1lu2+k piston of a hydraulic machine. The small piston has area 0s+p oldij -7ua2u l1k$2.0 \; cm^{2}$. 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 cm and the lard /;.u2zpy zl)1ou xwyge piston has a radypl2x;) 1uoudyz z/.wius 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. jf38u 5rxg bz/What force needs to be applied to a 5.0 cm diameter piston /58j gxr uz3bfto accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its largq6cmr c4p 0dj/k feoy3* 1s1xbe piston has a diameter of 40 cm. The lif/c4dk ecbxp 131s*fo0q6jm ryt 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 water. Whw 9-pi-r:a8 i qancn6tn.f)dn at is the buoyant force of the waterwitq)f8 pa:rn-a 9d.nin6n-c ?

  An object has a volug 87ci6p5(mtl cuqq5c me 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 by2c astrf8pfk6yq4ap619do4l4 w v lc7 a string while submerged in water. What2 7f4 plq6w44f9t8cd6r asykocvp l1a is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold iamb:b2 kh99,bcpvu2s- p g) jrs $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine :hp +s6 0nbdiv(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 7.8dv+xe :um1 qn-2ye5d/fuwaw;4 N when it is in air and 6.86 N when it is immersed in water. What is the specific gravity of the objeem w1w;dxe- /2 5anu:v qyduf+ct?

  A container of water is placed on a scale, and the schq mi9f7h: unh5;h0qb ale reads 120 g. Now a 20-g;hqb9nhm7hh qu fi5 0: piece of copper (specific gravity = 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 a mass of 1yu-z-8 r ,pj fhdrt-/5.6 mscrnj fh.j.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 barely float issktfe ./*orz5l/ g0 :kg wlo1n water. What i lfk5/z k .:w tsgg*r/oel1os0s its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and., pqhq)xf ao u-z,n. tytmre (4:bb6g 0.50 m high. How many kilograms of mass nb yuax. z,tm4:qo gp)eh( b.t6rf, -qcan 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 vo3;8a+w fmesu+qje 3iry j) ju 33npzk8lume beneath the surface of the water. The weight of the displaced water isym snw fja+i k8zer+p)333 ;u3je8qj u 2000 N. What is the weight of the object?

  A solid object floats in water with1 (i :7 d-kqgpuhsq,ej three-fourths of its volume beneath the surface. What is the object'quge7d j1iqk,hs -p(:s density?

  A 200-N object floats with th/v oz::odeqrp;b 17 m bbl6tp5ree-fourths of its volume beneath the surface of the water. What is the buoyant force on the object/bp otd5;e:v6bbql zo:p 17rm?

  A polar bear of mass 200 kg stands on an ice floe 100 cm tz t7jid +*i j0prl m6-tpf(vmdzb7j 2(hick. What is the minimum area of the l zfi2mbj(p+jtdp67 *r-tm z0 d(7j ivfloe that will just support 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 a w6f1ezf xv*inp5,ta8c3z+80sg9vvzz5 ueqk t 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0c majdehwr)cx6)s 1,4/i nzwt:rg 4k. m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this restricgjwz cr x:1.6) k,nd)ctwis4mre/4ha tion?

  Water flows at 12 m/s in a b +rwefd)5ih( 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 it take for a pump to supply a drinkingw6fp-n6+wm 1x vv,wcgpb2 xi4 fountain with 300 4nw6 vmbwcxv+gx,ip21f-pw 6kPa, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a wal,10r ;yfxxzvz.bz9tter storage tank that holds water at a depth of 15 m. At what rate wi0.xz ; ,vxy lzz9b1ftrll water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectio1dhum v*o 1i(4us : rb)+d a:(bf6fnetdr)vitnal 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 P*v 9vdwy5h5w za-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 oidvv9h* yzw5w 5l 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 tissuq,tw9m5gspyv5y ofm;gw 3a6a g.. p 12eab*roe 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 consgt 6wv 5q.5mr*9 .1be ;p3py,o2fsawyoaagmgtant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A lizmmdrno 9z8y6821b has twice the diameter of tube B. If water rises 24 c28orzm z nym 81di6b9lm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.06-i :rwbq c7glzb1w a273 N/m. How high will water rise in a capillarcga6w:lbw-r21 7qz biy tube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a gla95cuhzedx/om .* 6g rgss capillary tube with a dizud.hgm e 5/or9c*6xg ameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, aj k1mjgd)z-sdt /+2 kmnd the water rises in the tube to 4.0 cm above the level of the pan. The surface tens2+ mz1dj t)gdm-/kk jsion 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 rectangula0qkz qkwc+jujtw :1 jh o8a:,(r frame of length 0.120 m 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, howaoj:qcz :8+1jkkh(0u tj q,ww much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and hcdd p:z7o.g01jikc: width 5 cm, and is built in such a way that one of the longerok p1:0 z hd7:cg.cjid 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 cm square?