The three common phases of matt e.of8zsb- ha0fh8c4 wdoi 4g2er are

  Density is

  Substance A has a density of *t*pa 6faqcjw); - izrv5,zjv$3.0 \; g/cm^{3}$ 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 pressure?wso.cl 64h 9dw,0vnqje/pc t2

  Consider three drinking g3 q6f1 mslp3vxlasses. All three have 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 holds more water than A. Glass Cvspl3f xq63 m1 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 d q0xip+ .po-(jq5re ithe pressures inside and outside a tire called?

  When atmospheric prenj 48wr 80r-ea z2autsssure changes, what happens to the absolute pressure at the botton2szerwa4ju8 t 0-a 8rm of a pool?

  You are originally 1.0 m beneath the su0nvz ip byp:/s7 jg9h8rface of a pool. If you dive to 2.0 m beneath the surfasj9/7p gy 8:bz 0hipnvce, what happens to the absolute pressure on you?

State Pascal's principlamv8a(,u 0s)i3nsgqxe.

State Archimedes' princh+ yw;dv u.r 6khck-5riple.

  $50 \; cm^{3}$ 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 const kt(yzc 6-kld1yig- ivqzew4y-0z 2(mant density, what happens to t kyk1 igwz(qm- z2lyd4yt-0ie-z6(c v he buoyant force on it?

  Salt water has greater density than fresh water. A boat floats in both fr(qba+xd6d:ve c oj7o4 esh water and in salt water. Where is the bud(4o cvboq6ex aj+:d 7oyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in bo uj5rd)rmr: qd08 8z-mmvhv* hth fresh water and salt water. Compared to the freszvdm-d q8m 0hurhm)rr58vj * :h water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercuyj/ 9*d( ino0 xlo*rcrry. Where is the buoyant force on oild0jycr(n *rx9*o / the ball greater?

  A 10-kg piece of alum yyog/ do*cf*)k7g-u: fdkj0vcu,5j binum sits at the bottom of a lake, right next to a 10-kg piece of lead. Which has the greater b juddo kfc5,yg/gyjok):v-f b0cu** 7uoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a 1p cmu+.ewhp p1xp6,c bathtub. If the iron is removed from the wood, what happens to the water level in 16h +pc1,xpmu ewp.cpthe tub?

  A piece of wood is floating in a bathtub. A sez:/0 17h ( dqwbin72lioinaiocond piece of wood sits on top of the first piec 7lo/a iih 7b(1 io0:idqz2nwne, and 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 diameter of the pipe at poqf* o /hdo )si0ra5ay+int B is larger than at point A. Where is the speed of the water greaterof5s/ )d+aih0 *aqyor ?

  An ideal fluid flows at 12 m/s in - w 9pz.ovb;nva horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed n-;z9pvv w .boin the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipfms-ux)wp7xb+ s7s3 p f42mma,ayl ) cnv4w7pe narrows to half its original radius, what is the flow speed in the narrower s lnmbspvaupmp32 x-+7)mafsc4 7s7 f4x, w)ywection?

State Bernoulli's principl5 o+pqnz*ac/p.n l 3,vbknvg)e.

  Which one of the followzg+ p czsn7w,3)od r*ring is associated with the law of conservation of energy in +w3nz*p,d rgo7s zcr) fluids?

  As the speed of a moving fluilv n57 uqj+;**wrc deod increases, the pressure in the fluid

  Water flows through a pipdua6iuef0o7x q5 h f80e. The diameter of the pipe at point B is larger than at point A. Where is the wate0h i756ue0x o8ufafqdr pressure greatest?

  When you blow some air above a paper str4tx;slxv6+ut ip, the paper rises. This is because

  A sky diver falls through smo.jqfr2+8u the air at terminal velocity. The force of air resistance omrj sqo.u+f28n him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a emmsx2.* an6 /s1hubctall tower. *s 1h2eacs/6.bum xnm Which will reach the ground first?

  When a small spherical rock of radius r falls through water, it ex:(ad6 dnedeq((e jkn/periences a drag a((/qd6 dee:ed (knnjforce $F=arv$, 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?njy4s3q(m8l, unv8l/6o ryxe0jmb- s That is, if you made a 10% chang6s j8v n8y/r0q4mb3ylm jnxo-(el ,use in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but ( r9c a zrw8)n64b:2k ypqgcphpipe 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 f wrnz469r: acg)(q2ck8phbyp low 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 so 6u6v+mpq oe6 sc13 vw9s,jlas pipe A. Wateq 9vlmsewo166,vp63 +s joucsr undergoes 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 qd oz8zbyd 07qfu c:*l w;s*,moften tastes greasy. This "greasy" taste seems to be associated with oil spreadingulfw * 8cdoq7d :m 0;z*syzbq, 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 placed in water, the watmw.qcflw */d/ er rises to a height h. If the diam/l.m wfw/*dcq eter were half as great, how high would the water rise?

  Certain insects, such as the water bug, ar .x0l tejhu y(4wpv4.ie sufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. w .e.pu x jl4ih4y(t0v 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 lightweight g2bf)b3zd f)bthat 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 b2g)ff3bb ) dzevery 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 36 yf; 58qfq: rhk;iekmxhfr7 +.00 cm x 4.00 cm has a mass of 30.0 g. What im ex f;hfh ryk+6;iq7:qfk5r8s its density?

  A liquid has a specific gravity of 0.3l)v g14fnd8u ph6l.kxi a:o0n57. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 c6oz.c i+vyxf+m. What is the maximum pressure it can exert on a horizontal sy fv.6o+xic+z urface?

  A person weighing 900 N i :kj rluft wlb*/fht3y2 gjq08l .in(4s standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstandm q,41psh2t 8ntw o06:hhkhbe at a depth of 120.0 m in t6othwe: 0 , khm s8hh2qn4tpb1he ocean?

  A circular window of 30 cm diameter in a submarine can withstand a max fspn3l-j5ed; imum force o5fj;3p-d lens 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 pre +o;)-hs wt27ryt x4xfu5veimnj+:jhssure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below thtgko 7xx2d5-a t6uo61 jxtc*d e surface of sea? (The densit7xgtkoj*62 6-dd tax51c xto uy of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 2c/ mdk0rpqn0 m below the surface of sea? (The density of se m2p00/ cdrnkqawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine.bb j8fg8ow t795 qsdo83ymkh0 The small piston has aream 8q5 j9 oys3fkth7w odb8b80g $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage lil9yi g dtm;9)xpj7,rf ft, the small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. Whaj t r,pfg)lm79yxi ;9dt 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 c2 w0nxkf ob.7uzw*k; sm diameter hydraulic piston. What force needs to be applied to a 5.u2 fws bxn*7 ozk;.kw00 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.6/umxjh 3cng :0 cm, and its large piston has a diamet/m6ngujh3c x :er 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 30 N in water. What is(fs+k nihj+l4 the buoyant force of the watnkshi l4j f(++er?

  An object has a volukrd*cnz e 283dqys 8y2me 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 suppor nymlxsitt:+h,a963r ted by a string while submerged in water. What is the tension int,+nth 639i y:amlsxr the string? (The specific gravity of iron is 7.86.)

  If the density of gold is ca pe:z z 3dz;f1dw;*a$19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarinet 627fh6z)o0mgsm qj1 n4ehxc (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 iy*c*y v+zdn(it is immersed in water. What is the specific gravity of+dnyvcy *z*(i the object?

  A container of water is placed on a scale, and the scale reads 120 g. Nanz(ii x,):srow a 20-g piece of copper (specific gravity = 8.9) is suspended from a threadzsr),ix :(ina and lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a minq00 e/w pjd9ass of 1.0 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 barelyqeq r8 yizbgj9936 q:v float in g89eq :zb yq693i rqjvwater. What is its mass?

  A rectangular box of negligible mass measures 5.0 m longu*n5b.qbkisq46 . b6uuq2dut, 1.0 m wide, and 0.50 m high. How many kilograms of mass c4u6kbiq26 5u*uqub d.tsn.qban 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 benea1n 2(;u-oagsi -cmoqz th the surface of the water. The weight of the displaced water is 2000 N. W -cmooa21(qzu-ngi;shat is the weight of the object?

  A solid object floats in water with three-fourths of its volume6 t*da*we4mmtdvk. ;57cix dz beneath the surface. What is t5vkt4x. dddm am67z*te i;w*che object's density?

  A 200-N object floats with-fvxp kz 7g,/e three-fourths of its volume beneath the surface of the water. What is the buoy xzf,evk/p -7gant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cg;w 0udsp: 1ci65 gv. qcsh,s(xmljf.m thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gug;s. 6mc sxws,5.dvp1( hgif jq0cl:ravity of ice is 0.98.

  Liquid flows through a 6qnbd5x k2ke *pipe 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. There 5a) 0uo wmppg1z*3nbs is a 2.0 cm diameter restriction in the line. What is the velocity in this ren z5*1 gpb0mawou s3)pstriction?

  Water flows at 12 m/s in a horizontal pipe with a prea.i1r hp( fp3 ,s;dvq/x3-; idzt kydessure 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 fountbff e4a :aieuf-b71k9 ain with 300 kPab:ueif1af 4baf-ke97 , if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occ;;jy;;hpy ktse;8g ddurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate w;e ts dj;gk;pyyh ;;d8ill water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectionaltgmlq3u c ltz)2gc:g.sj-)jdc 7 m03u 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 jdb)h33wonqjh:7o x / 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 thdj x j3hhonq/b)ow:3 7e 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 /mh bl;vewdv;wh0 8p,fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart w/0 ,w; e pbhdlmhvv;8have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water.kpe5c f z:-+lv Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it risfz -:+kc e5pvle in tube B?

  The surface tension f zhp;u6-f (:v mjzoo2of water is 0.073 N/m. How high will water rise in a capillary tube v mopzo-u : hj;z(6f2fof diameter 1.2 mm?

  232

  To what height would water at 0 du)w*ha1g0sg 3h6j pzz 0kfs k0egree Celsius rise in a glass capillary tube with a diamegkhj z1* u0k s)s30wz06agp hfter of
0.50 mm?

  A narrow tube is placed vertically in xo+r2 wxy78fy1anpcq nejd9f( b* g31a pan of water, and the water rises in the tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowe( gacj9* r217xw8nd yf+1b pqxne3foy red 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 0.120o/tw9fi ;s.a:17 ocqt km4 jvu m and width 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water im1ua:7t 4os of9cvk;/ij .wqts 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectanflg7o hmvr) 2n6;k 2(sycxt y8gular frame has length 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 contained in the frame. Soapy water has surface tension 0.026 N/m. How xsc h(l2)yy km8f t6no27gvr;much work is required to move the adjustable long side so that the frame is 12 cm square?