The three common phase 5mn8:hljseo x;,5qtt0vsn c8s of matter are

  Density is

  Substance A has a den m rag(uoa281go9ced t;akrv1 9 )f6jssity 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 nda vme 4i)nm+2ot a unit of pressure?

  Consider three drinkin-x8dq nz/6nf kth8/ cug glasses. All three have the same area base, and all three arx k/nnh-q/u8tfc z6d8e 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 between the pressures mx ypjgs 6d5;8inside and outside a tire called?

  When atmospheric pressure changes,if/ c c5vw*c/ kqh --vc7ktg*i what happens to the absolute pressure at the bottom of a pot* kfhv kv*7cc --qici//5cwgol?

  You are originally 1.0 m beneath the sur 5d s3o1(q cn0gj2hxhzface of a pool. If you dive to 2.0 m beneath the surface, what hs5xcndqjo 03gzh1(h 2appens to the absolute pressure on you?

State Pascal's principlehu*nt x 2vo+pzwb 2,n0.

State Archimedes' pribonf+bnn+ i:gseh 12r40dtt vnf: - 5knciple.

  $50 \; cm^{3}$ 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 t*xbslmc1 *r/ t-ys3rdeeper into water of constant density, what happens to the buoyant forlsc 1* bt rsxm*tr/y-3ce on it?

  Salt water has greater density than fh 2nfkz 9dc-5irz- rn*+y:lxt (ppwd- resh water. A boat floats in both fresh water and in salt r5y92+pc- * ilrnpz dn(tx-khd -fw:zwater. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh et4ze6p;qrb*)gy /g,hefk h/ water and salt water. Compared to the fresh wa , b6z/gq4/e*gh khy;tee )prfter, the volume of water displaced in the salt water is

  A steel ball sinks in water but floatzxktu - r.pe/:s6lt(k6t6 m gvs in a pool of mercury. Where is the buoyant force on the ball tp/k6t.r6-vktm geu: (z x6slgreater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right n39sf/ eokhx3yext to a 10-kg piece9x3/kfeo3 ys h of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top oft5rs9/ul5g pmzt3 94sfk,bky a piece of wood floating in a bathtub. If the iron is remoz5f mbu,sr 9kl9gy5p/tt43 ksved from the wood, what happens to the water level in the tub?

  A piece of wood is floating in-pgwk)mk7ef8j 9c5 of 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 taken off and placed in the watemf)8 5c kowk fpg79j-er, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of5duuz 8lb ceuf5 c*uayfvuk,r z38001 the pipe at point B is larger than at point A. Wh,ukr5uve8uu5 0u 8 ccay d*03bzfzf1lere is the speed of the water greater?

  An ideal fluid flows at 12 m/:(p ::lven ljps in a horizontal pipe. If the pipe widens to twice its original radius, what is the flppjv (nel l:::ow speed in the wider section?

  An ideal fluid flows at 12 m/s in a hoespm.f+, iich 1zx+kf(c4d 3q rizontal pipe. If the pipe narrows to half itxz+di1es(ffp.i3 +c 4,hk qcms original radius, what is the flow speed in the narrower section?

State Bernoulli's principle./v o5 / a 2snb/xezfj7w.1kgen5s,ykb

  Which one of the following is associated with the law of conservati5jvgi 3/etp m8oo0-kpl dyu:. on of energy in fluids0.voi/ j -kteo53:l8p gpydmu?

  As the speed of a moving fluid increases, the pressure in the fli pa).41epi iens3n tx-)o a zwtx,4c+uid

  Water flows through a pipe. The diameter of the 9l--1ix,gfeodr a* x spipe at point B is larger than at point A. xrl*gox,sa9 f1ei-d- Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper ric.9x 2g *2d rboy l)jfig,2zveses. This is because

  A sky diver falls through the air at terminal velocity. The force of air r8b7jmu o8dnld5wl. 3i (9j*z n ujmr+resistw9bmrddum7* .8i l(u+o 8r3jnnz 5jlj ance on him is

  Two Styrofoam balls, of radiap ft8+o1ym)uqqn3 af(i -b,si R and 2R, are released simultaneously from a tall tower. Which fa,i(sf8nq y-)mo 1bp+atu 3qwill reach the ground first?

  When a small spherical rock of radius r falls rx/y:lh e)*qo through water, it experiences a drag fo* lqo)y/rexh:rce $F=arv$, 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 thf44zbjk2b jt/e flow of fluid through a narrow pipe? That is, if you made /bb24 jfz k4jta 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 thovu 5uixd;l9, ; -a9igf smro9e diameter of pipe A. Watd xv;o- il9m ,r9g;aufi9ou 5ser undergoes viscous flow 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 diameter, but pipe B is twice as losjh/sn00f2 eells1/e w pu8 1i5dn juw-f+wu(ng as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across t /uhesd(f - ue le5sljww01n 1/28injfw0 us+phe 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 oftekqet( :ox2wr e;p+vh*n tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explained in terms;vw:(t oxq+2ke*e rph of

  When a tube of diameter d is placed in water,j)mqe8:3t cxc the water rises to a height h. If the diameter were half as great, how highec8q m3c):xt j would the water rise?

  Certain insects, such as the water bug, ae9 xjv(ut ,6-bx4iyd are sufficiently lightweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. 6v 4dux-ty9i(exbj ,a 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 ligz+j/r f. + p2fv:n6g ,jtqdmhuhtweight 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 ahmjgdrpv+fn,zj6f / u2qt+.:s 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 cd4bgzkp ,12sn6.wun7 ) in iurm has a mass of 30.0 g. What is its n usp6wz.n1b 7u4k2)d, ignirdensity?

  A liquid has a specific gravity of 0.357. What :12okets: rij.04ivrus x ab4 is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.0y++sko/ au5;f o 7v00nxlxt jy0 cm. What is the max yo+j+syfn;7 u0 t5ovx 0lk/aximum pressure it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. bz9v ynv,g 9r2qk8ztm1p26g qEach snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand ab dpt2nse0 8hn(0sdc i0vv; g7t a depth of 120.0 m in the osp20n esi0tv87 hg; n(dvd0b ccean?

  A circular window of 30 cm diameter in a submarine can witxi/ v8bpt v2g:hstand a maximum force of:8 ivpb/xv2 tg $5.20 \times 10^{5} \; N$. 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 pressure is 30g gfic svv ;xnp16/(-s0 kPa?

  What is the gauge pressure at a location 15.0 m below the surfach-) zzmov zeu8x.e5u g m.*)eje of sea? (The density of seawatexe u8jozz .. -m)) m5uvgeeh*zr is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute prev ;7hb6n5o4 wwv+o cztssure at a location 15.0 m below the surface of sea? (The density of s ow6+t5zo7 nvh;cw vb4eawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The sm8ihx dc+,nl1u all piston has arec h ud+in,81lxa $2.0 \; cm^{2}$. 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 rap9k q+e./lfwn o4mkh0dius 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 larg k+p/hk0w4mn 9ofq.el e piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulichrtjsfgetg 2 g5p*p9xf (9- f fmwp8387 gxu-l piston. What force needs to be applied to a 5.0 cm diameter piston t9wf28p- pfg hfr 7 -p*gfu5(g8gxlsje9m3tx to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its q, jfn vse;uk9bq*zsami,-; )large piston has a diameter ofjab nq-um,s;efs;k)i *vz 9q, 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 weix8sk 7cy.o*ryb.b1ei ghs 40 N in air and 30 N in water. What is the buoyant force of y xr1bes .y*bci8.k7o the water?

  An object has a volume ofa1i:)oc p dpu3lbkpzw c. /*1evu,yl ; $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of sos .x 6y35erc6 g7zl/gcyrp(bplid iron is supported by a string while submerged in water. What is the tension in the string? (The specie 6y/rzgsp.3 cyr5pg xbc(7l6fic gravity of iron is 7.86.)

  If the density of gold io) s(qh2x 5lafpva-6 zs $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density (ln f;of9 qr f2dewt9,= $7.8 \times 10^3 \; kg/m^{3}$) 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 9o) 1o 2mfibzoimmersed in water. What is the specific gravity of the obozb9f oi1o2)m ject?

  A container of water i 2* gz,ofua3mis placed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread angum , 3*2oifzad lowered into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass qcx9g 7 /ly 6byt,)6udq ayw;tof 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 3a (st/waiin,71e w kvand diameter 2.0 cm will just barely float in water.i3ne(,7 savi1ktwaw/ What is its mass?

  A rectangular box of negligible mass measyg;c3rvnk4. u) h roq5ures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be c rq) y;h uvr5gk34.noloaded 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 suz0qhx8u(4so s rface of the water. The weis4hus0z8xqo( ght of the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of: r rq7a2t tx.svx:jz*a3g3o63w sxu e its volume beneath the surface. What is the object's density rv6 3:jusaqz3tso7 2r3gx:x .a wet*x?

  A 200-N object floats with three-fourths of its volume m:ungxr nemocx* 35 b:,j8z 6bbeneath the surface of the water. What is thr :gmm nx 6,*:c38ebzxu5jobne buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the pf)zfud 60wp6minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ifpd)0 w6z fp6uce is 0.98.

  Liquid flows through a piiamia*c; ;mn3 pe 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 is a 2f :f7.gpa)f)q :rqi7+rt pjlo.0 cm diameter restriction fq :7o:tfj.rpl)rp g) a qi+7fin the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal rx 1)os;9e1jwcrdz9t 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 drin mdsw02sym(d 6king fountain with 300 kPa, if the fountain is 30.0 m above dd( ym20 w6smsthe pump?

  A hole of radius 1.0 mm occurs in the bottom of a wa:qehf mdi9n+p)jyl*, (r4 afjter storage tank that holds water at a depth of 15 m. At what rate will water flow out of the hmq ajendy(f)h+ ji p,r4l 9f*:ole?

  Water flows through a horizontal za97qfbib./n 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 viscosity of 0.20 Pa-s. How long would it take to pvdqbflt 545ot4j-u o3v ds:4eour 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 to-53lj4vdout qed45s 4vt:ob f p of the neck, and neglect any drag effects due to the upper part of the funnel.

  Suppose that the build-uhq+y jkm5 usux(5 *j3bp of fatty tissue 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 constant blood flo5 qy 3*j(sxbhuu5 k+jmw?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameter h8z/ r/cj,c uyof tube B. If water rises 24 cm in tube A, how high will it rise in /8c/zr ,ycjuh tube B?

  The surface tension of water is 0.073 N/m. How h;e 62bl.yjt kik k v3kip:h*o3k67tnsigh will water rise in a capillary b:tvi 3 3*ske7 ;k 2o.k6tk hink6lpyjtube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass t;f dt f5stbo5p k-u.,capillary tube with a diamfkb-u t,std. t5;f5o peter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises trwm9 e5.7mzl 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 to the height of the liquid column in the t7.e z9mw 5rmtlube?

  Consider a rectangular frame of length 0.120 m n39/e faq6 zq3ytk* (-xdyfrmand width 0.600 m with a soap film formed withia trx/qe(mz y*q3 9dn3kyff6-n its confined area. 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 leng9 cskxwx 1(/nmtqb0cj6b.u *ith 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 much work is required to move the adjustabc ucqwimt6bkxb9j (/x 01s*.nle long side so that the frame is 12 cm square?