The three common phases of m-z) h.fu+nw n yrw-z*nt 2tb8ratter are

  Density is

  Substance A has a density 7vn1 w (nd3d1o.ut5pecsouo -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 followi2 locb6 sk2m5rng is not a unit of pressure?

  Consider three drinking glasses. All three have the sacbyx +-c2x*rh7 -4g:i:eq mcf4lor o cme area base, and all three are filled to the same depth with water. Glass A is cylindb f:-cg oi4:e7*olm r x4cqh cc2+rxy-rical. 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 z5zcv+wasf4 n.ga72g8n u8vs ed)9t6dzps 6d pressures inside and outside a tire called?

  When atmospheric pressur z3h0ev1;mqq3c) gz tye changes, what happens to the absolute pressure at the bottom of a )z3e3 v 0;gchqm1qytz pool?

  You are originally 1.0 0e-roa5ka ra1 m beneath the surface of a pool. If you dive to 2.0 m beneath the surface, what happens t05oara1 -eak ro the absolute pressure on you?

State Pascal's principle.57bod:rrr;kdpar d g sn0-77k

State Archimedes' principle.) v8 xc22sa y5cv*p( -mreudvo

  $50 \; cm^{3}$ 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 deep0 c.* . 9xqts+gp*sropxada z;er into water of constant density, what happens to the buoyant force on it aq*0sxsa9x.;tp gzp+o *c.dr?

  Salt water has greater density than fresh water. A boat floats -fhe2zro6g y ybf32.8 uzc)3ovlr+ 7(bqytq w in both fresh water and in salt water. Where is the buoyant force greater on the3v(cy8) 2wqy6 ob rq7l. -ffug2+ybeo h ztzr3 boat?

  Salt water is more deer)a-du5 0a uamg-4 :ho6o uglnse than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume oaoom a)ueu-:l- g56 4dg h0aruf water displaced in the salt water is

  A steel ball sinks in water but floats in4ah;qoc6b o.bx f-yp 5 a pool of mercury. Where is the buoyant focayo- ;h.4p6q5bf boxrce on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 13sga7dbf byh7hc(8)rn xf*b/ 0-kg piece of lead. Which has the greater buoyant forcdhg ( r3c/7s87af*hbf)b xbyne on it?

  A piece of iron rests on top of a piece of wood floating in a4j iyjy:m*9 x(hdhpi9 bathtub. If the iron is removed from the wood, whath4h 9: xj (mij*ydyip9 happens to the water level in the tub?

  A piece of wood is floating inqse/79er5jqh tiz 8z.r. /xtf 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 tak9hr/f5 .qj e78iettr. zx/szqen off and placed in the water, what happens to the water level in the tub?

  Water flows through a4n+hchyk l do e525.uv pipe. The diameter of the pipe at point B is larger than at point A. Where is the speed of the watech+.5 udho5 2ln ekv4yr greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the piu 9g.grqc+ r4tpe widens to twice its original radiutc qr.49+rgugs, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to hl go(xlo0(v ggor .kw,4/ 5wrhalf its original radius, what is the flow speed in the narrower se.or(xlg/5og ,(vg hwkol 4rw0ction?

State Bernoulli's principr*lnd+vb/ fi 2 5;qorole.

  Which one of the following iskywuzho0p5+ 0 yp0jq6a. kbq: associated with the law of conservation of energy in fluidsz5u yq+0y hk.p0:k pqabwoj06?

  As the speed of a moving fluid iqmh5 kda28 2jt6eepc:ncreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is lao9:xby1ppc /frger than at point A. Where is the watec1 fb9p o/p:xyr pressure greatest?

  When you blow some air above a paper strip, the pau*znvalz8yicqs3 fof++c4r+9 o :he:per rises. This is because

  A sky diver falls through the air at te9j qsftu0p5:pmneiz z( fi /(*rminal velocity. The force of air resistance on him (pu*i0sq mi (t/pzz:fjfn e95 is

  Two Styrofoam balls, of radii R and 2R, are released sime)i sec*8l)gmultaneously from a tall tower. Which will reach theg))cee8i ml s* ground first?

  When a small spherical rock of radiusb:a/q ,. wq4te fdkb7u r falls through water, it experiences a drag force b7,.qkeqbdta4/w f:u $F=arv$, 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 efza n7-7 6j jl 35/jdv8xx3kvrx.v fkmxfect on the flow of fluid through a narrow pipe? That is, if you madfkav/jxl6v3 7jz d3 5-xx87mn jv.krxe a 10% change in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes aren1q;upzyne cl j418ee;c*n br5u b) 7k the same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressurelcu u)eny 714* 8n5knq;b ezr be1;cpj 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 diameter, buf4oe8d1ak :hshul3 t+t pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the sam81a4:fu o 3+ehdsth lke 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 n+xiffj2okdla. s9(* g )ye6p seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikerif o.g9pl(6s)xfjy2+ dnke*a s", this is readily explained in terms of

  When a tube of diameter2wizll screg. 29/a p;1w/sbe d is placed in water, the water rises to a height h. If the diameter were half as grea .plwi22 z1slb;9e/swcr/geat, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight that the1pxvw wxm :gx8t:)t u6y 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 the weight ox1wm xw:g6px)t:v 8u tf bug B?

  Certain insects, such as the watsf2h kxv th72n t8d-k0zf 2y+oer bug, 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 suppose thatt7k xnf+ k28z2th- 0 2ohvyfds 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 cr0r-)* glbradm x 4.00 cm has a mass of 30.0 g. 0g -rbl*dar )r What is its density?

  A liquid has a specific gravity of 0.357. Whate ofrdgj:9x*; is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Whaj(wg4 90 fatja5t urxy ,ce77ot is the maximum pressure it rjuga 0ofy,ct4wxej9a775(t can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. awf 4 8ntu0f2m Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand y jbcw2mlk4p548bz 2cat a depth of 120.0 m in the oc8cw2bcy jp5z4k lmb 42ean?

  A circular window of 30 cm diameter in a submar t5nc-pey( 7u8g0 lgktine can withstand a maximum force otle(yc7 p5t0 -kgu n8gf $5.20 \times 10^{5} \; N$. 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 pry)q1pc h4;nkfg +gxx(wx-6 osessure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of se.nmqb5 o;i+n/ ysx4u ea? (The density of seawa+4x mni5o.nq ebuy/s ;ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the i4u0(uqa h :x /vluae3surface of sea? (The denvqhu/ e4 x :l(3uaiau0sity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the 8menl mp+yh7jv/.sl;small piston of a hydraulic machine. The small pisto/enymlsv m+j 87l;.hpn 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 cm andj4lini.+vwk ; the large piston has a radjiv.4n+ k;l wiius 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 0., vv 3 x 0xlvetc5huqu)rq0sto be lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diam35q)vt.qlshvcex 0r 0u,0 xuveter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and it ki6byxq 6bi i*jo2ugit/*1* as large piston has a diameter of 40 cm. The lift raises a load of 1q*bt/u* ojgiya*6 6i xi 12bki5,000 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 the buoxug r2h 1svzq+sn-+d-yant force of the wateru 1qz+v gdx-srns-2 +h?

  An object has a volu4r, *-e g0zb b6l7o sffn)4xnaa1aq/vj wdz9yme 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 submerged in wrd+e. ne;eymfwh36 h9 uu-s )-dusxf 2ater. What is the tension in the string? (The specific gravityxn 9 2 6-+w.s ddumfu ;yfeehse3-rhu) of iron is 7.86.)

  If the density of goldmz 6tfhyrx,w0 /s/a6hep )z w4vplrb g147/zp 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 (dens2gouh r+-pn7b8 twln zj*i*0f ity = $7.8 \times 10^3 \; kg/m^{3}$) 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 .*exih4zu; d vit is in air and 6.86 N when it is immersed in water. What is th.4v*u hzix;d ee specific gravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a 20-g)ew)4eap42o6 ; izob/ 5y1fia yysupj piece of copper (specific gravity = 8.9f ) ;a5y)6b2 wai yzoesj4 /pio14ypeu) 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 1.0 kg and deu a3 iynvgc+f/o:xl 88nsity 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 le) daj/6 +to 26isxu)tfdfv,lyg2af b,ngth 12 cm and diameter 2.0 cm will just barely float in water. Wh2ox6),ubis 6f+2 tyfdjva /ga),tfd lat is its mass?

  A rectangular box of negligible mass measures 5.0 m 8mpii0rxij1- long, 1.0 m wide, and 0.50 m 0 ijmi8 rx-pi1high. How 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 7la jwzsv19zici48l 6surface of the water. The weight of the displaced wci4 s v7lz8 6i9lj1zawater is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of ;os1ul4xs xua9jl,4 xits volume beneath the surface. What is the objec,uuolxx9 ls1x ;4s4j at's density?

  A 200-N object floats with threem17 nee( fm.5wyk/ ioo-fourths of its volume beneath the surface of the water. What is th1w. i( e7m/5nekyo ofme buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. Whmpg-,)i t9yb jat is the minimum area of the floe that wibyjpm ,g9t i-)ll just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a hzs24i+q h(kki(u7 ompipe of diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. Thei(w,gkqlhwq (.q0/sire is a 2.0 cm diameter lq(.hw ,qkig(w0q/is restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a hor+-ct-a fn)iqtlp/jus9p r2r +izontal 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 pulxmc0: b(2h hnmp to supply a drinking fountain with 300 kPa2b xn:hm(c lh0, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank9fu.ozin b;0 og txhu*,a/ d+z that holds water a gifoz*n +ozh tub9/0ax,d;. ut a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-s2cpt ft,:a sycdc4 9+aectional 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 long would iqjwz *vds47m 9bd .zl cv0zynvl;0 )m6t 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 thvywv;zc v j0l6 dn7)zz 9m* .ql0smd4be upper part of the funnel.

  Suppose that the build-up of fat3rkr k9a ia(v5+)sd* wxylq.q ty tissue on the wall of an artery decreased the radius byq rk)y .i9sq+d v5wak3r*a(xl 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 (72gkwje14jmej(l fp has twice the diameter of tub je47(1mf j2pkje (wlge B. 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 water rise in a capil+r7s+b s q8sg k.gztg.lary tube of diameterq 8k+g7rz. sg+t g.sbs 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tub(hj ol 4,ul/cqe with a diame4qj,/ (cu olhlter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water g9ib ngtz- o .iz-6e(yrises in the tube to 4.0 cm above the level of the pan(.zib gny-i9t ze6g-o. 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 w o5 04:r h68judo x)l arfcezf8a,u+iiidth 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, hof5 oiu84z,j:co60 fiuel r+ 8daa)hrxw much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm os g6godyyx zmgmia7i5a vt: 747905cand width 5 cm, and is built in such a way that one of the longer sides can be moved without burstxg 70:my9mi co5y o7vd4 5t7aig6sza ging 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?