The three common phasesuq5;cd7wknp 5jyd ik q,/5ew2 of matter are

  Density is

  Substance A has a density of a e cgufa2(cn,yg.ot;.8kn;w $3.0 \; g/cm^{3}$ 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 pre.t:7 r msu303c rdpufb pkd-2pssure?

  Consider three drinking glasses. All three ha wfyn+qdj 9/:5oit/kkve the same area base, and all three are filled to the s+ 9ky okf5 w:ij//nqtdame 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 inside and outside a tireq2t-mtyqm c 3 noh:yh9.cnce:9gk n 14 called?

  When atmospheric pressure changes, what happensq:cmlj:(cn 4 ilo k18px/djf7 to the absolute pressure at the bottom of8/xkcjc( qil: jpf4o:m 7l1d n a pool?

  You are originally 1.0 m beneath the surfacx6 8(lx odrmt)ien b69e of a pool. If you dive to 2.0 m beneath t dx 8inlr9o)(eb6mt6xhe surface, what happens to the absolute pressure on you?

State Pascal's princd dgsy1r9v5lt6 n w*2kiple.

State Archimedes' prinyxi1si2 fqi7,ciple.

  $50 \; cm^{3}$ 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 constant density, wha 7ci7pcad0y l( dtj-18lf3a oat happens to the buoyant fa j8 137tpyicad7 cdao0 l(lf-orce on it?

  Salt water has greater density than fresh water. A boat floats 0 7 tntkwdtvt1.- )vsyin both fresh water and in salt water. Where is the buokw1v)st0t vytnt -7d.yant force greater on the boat?

  Salt water is more dense y1 ;riezu *;zuej,rt: than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt r1:zy;*t;zei uuej r ,water is

  A steel ball sinks in water azrjuu-;(t1d but floats in a pool of mercury. Where is the buoyant force on the ball g;t(zr1jua d- ureater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to m82nvo- lzz9 lsd/pnr0 +krk / w(t9fxa 10-kg piece ofro2f0ndp/l9w s-8/mzn+vztx9k lrk( lead. Which has the greater buoyant force on it?

  A piece of iron rests,z +r/1sux g.ub/c wpw on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what x /gr.bw1,uz sp+uc /whappens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece h2e1xhth(ns ) of wood sits on top of the first piece, and does notn(e 1hhs xt2h) 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)ykup0n/ cnq 835 5efp9wvdt)taff ( t pipe at point B is larger than at poin9)q(kf0 u5nw t5p8/pfyvdtt)a 3ec f nt A. Where is the speed of the water greater?

  An ideal fluid flows at 12 u t6ky p6u+uz9t nlndp2780urm/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the widek uz8 y0rtn2+np uu7tp669ld ur section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. b-c* u:fbqv1lIf the pipe narrows to half its original radius, what is the flow speed inqu:1 -*cbl bfv the narrower section?

State Bernoulli's principle-nbpb 0 anw0/ * kft/q9klwub).

  Which one of the following is associated with the law of conservazkp:, m0o ,tlftion of energy in fluids?z,tl:pk ,o0f m

  As the speed of a moving fluid ik qi1k pm9ah6-ncreases, the pressure in the fluid

  Water flows through a pipe. The diameter of thecu( wqbyup46 05dfi)ct 8 lz(d pipe at point B is larger than at point A. Where is tw5 0i q(c864 tydlfd)(puzbc uhe water pressure greatest?

  When you blow some air above a paper strip, the icq ,v)g 3+hhk 8am0pdpaper rises. This is because

  A sky diver falls through the air at lnrss56w;n0c 12irdc terminal velocity. The force of air resistance on n sr ;n105dcrs6w l2ichim is

  Two Styrofoam balls, of radii R and j28qh f*luzdd e/al 8zz2y7+c2R, are released simultaneously from a tall tower. Which will reach the czl*l8+zdhz 2f /jy7uq8 2deaground first?

  When a small spherical rock of radius.8iyl bn3/ ods r falls through water, it experiences a drag forc ol syi.8/dn3be $F=arv$, 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 zeod.tlvi g3;xn g 7.i,rtd01on the flow of fluid through a narrow pipe? That is, if you made a 10% change xzr1e .oti,ld 0t;in 7vg3gd.in each of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but p6-nvm *qwwsh;zok n p8b2g9a-ipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the -kvhmg96nnw; b-owa q* 8z2s plengths 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 a-sdmm0 v:ehbdl sag(:b hs)krn41b(.s pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the :va hb m)e-s1(ksd:br0gsh4n lm.b (dpipes. If the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold, it often tastes ymeke 6d-xjiy0xeb1g q,-u 85greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globu ,-6ubyde10-qxemi eyg 8k xj5les. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placb c5f .f 1gwa.jg-,ybged in water, the water rises to a height h. If the diameter were half as grefwjyf1-5b .g a.,c ggbat, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight()0+ w1tpb fxihxu 4qo that they 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. u)t 1hqfiw4p0boxx+( What is the weight of bug B?

  Certain insects, such as the wate0fe*lg;y : m geedtwv wx2-99sr 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 tey9wgw edtlev;g*2e-f9 :0s xm nsion, 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 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.s 7p ae;.8b qxtpa pp)vx+b7i-00 cm has a mass of 30.0 g. What7 ax8 +);vpxpat qpibse-. 7pb is its density?

  A liquid has a specific gravity of 0.357. What is its densiz-s.y ezcq0f( ty?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 jutsa- zbv .**cm x 4.00 cm. What is the maximum pressure it can exert on a horizontal suab.sju *z tv*-rface?

  A person weighing 900 N is standing on snows7 +mob9oq ft3)lrg q9jhoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of b 2(yyxxdsq-c jjg-4 l3o),dq120.0 m in the oceandd 2xj ocqs-xlgyj4-y() b, 3q?

  A circular window of 30 cm diameter in a submarine can withstand a o1k +.kxhtb ( *audrf xg:u:y3maximum force oo f.k3*:aku:t (ur xygdbhx1 +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 pre0wqa+:.u mzrv ssure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m be7 pbvbu-p,g9gg 3p*w4pipsu:low the surface of sea? (The density of s,gs 9uu7p bpip: p34b*-pvggweawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a loca lcfmym6oio, - yd5; ks(zt(g8tion 15.0 m below the surface of sea? (The den8s tmzgy clo;,ikm 6(d -o(5yfsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the smjg2 sjf ,ja5f,all piston of a hydraulic machine. The small piston has a5f 2,js,jgfjarea $2.0 \; cm^{2}$. 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 radi .;m+7vfeu3 hicaj4.v4 fcpd mus of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied on the sh+duve m.m4 jv f af74c3i;pc.mall 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 di3 y 07y5crp3xshhaw-/ zczm3(z.hkvuameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomp zwy3h7r3c su/3ym kxz5(a 0.cph-vhzlish this?

  The small piston of an tk2jo f:un/pv sehah4:p8: 3 hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a loaa/ :pph: je:tnn28vshu 43kofd 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 the buoyflvn s dx9ocwq; 0dfu(+ym08svh:(x 2ant force of tnf +xw 8vqd(cs0; d0v2mu :y(lsxfoh9he water?

  An object has a volume of ya;ve;pr t,4n $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supporteq- 4f u+.s,ygzahf9a(c:fx.ytztd .ad by a string while submerged in water. What i z z.:acdfatu(f -x.q4h9+afy ygt,.ss the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold e1gby(q.rf, i;qz0hw 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 .jvv do/kf538 ti fpgmy(e50lsubmarine (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 iwps*mp +h/55zmvptom08n flmi; /y8 u t is immersed in water. What is the specific gw+0pzp5f *mo88mm/5 np vt uh;slimy/ravity of the object?

  A container of water is placed on a scale, and the scale reads 120 g. Now a s3 v;z*q wjftx0;ek-b 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water,s*0b k3f ;je-qtwxv z; not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mas):i)m *r*n qcwp */pmy4r fuiss 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 difh 9uf 7zhr(9zameter 2.0 cm will just barely float in water. Whr 9z7h fz9(fuhat is its mass?

  A rectangular box of neglqx s g3f3v0u(oigible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogrgfo 3xv0 qsu3(ams 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 1) sndjl r:zz(the surface of the water. The weight of ths:zdz)r 1 j(nle displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath , ,n t8qb,n.oftjlr8+ lsp 2p7bdvs*pthe surface. What is the objec+otblqf.pb ,,s n*t72n j8rlp8s ,pd vt's density?

  A 200-N object floats with three-fourths of its volu)v4xb2ykd 8swme beneath the surface of the water. What is the buoyant force on the 8wd 4svyxb)2kobject?

  A polar bear of mass 200 kg stands on an iyt9 ak+0 cllv 81z:gnkce floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of sp:1v+zn k 0la8lctk9gyecific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diamfoeb2j 70 cfz/eter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m2w6boyep*bhlmx-eu79us * 9 i /s. There is a 2.0 cm diameter restriction in the line. What is the velocity in boi su7hexy u2blp699-m* *we this restriction?

  Water flows at 12 m/s in a horizontal pipa hk): fn+y+zf. rh-g,s e4/ yrwjx5dbe 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 av-4s xv 4 :q1er. vcv4yk nms/)iqr3os drinking fountain with 300 kPa, if the fountain is 30.k qr)-ei13s m4rn svs:vy4 vvc/qo .x40 m above the pump?

  A hole of radius 1.0 mm wo7/tvoss 5 2lg 8b9d+zgq9kt 5fjx.noccurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate w29 9vj d8f5o bnoxg st z.ltqsg/7w5+kill water flow out of the hole?

  Water flows through a horiz; l)dm lmlbc*+ontal 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 taked gwtont7 /cie j4c845 to pour 4.0 L of oil through a funne t/icg4w cdnojt7 5e84l 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 part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an artery decfb f*vd7-)+ac)+cfp l ozdon)k7 ny;q reased the radius by 10%. By how much would the pressurbfl c)k 7ffq*nnov+) cp)o zd- a+7dy;e 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 hao3 j9+ij 2hcughjdj .hut.b 05s twice the diameter of tube B. If water rises 24 cm ingjichjt +h.jobu.532hd0 u j 9 tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/bn)mdec05w(.z5/ m+fopa unjiw0 )nam. How high will water rise in a capillary tubjw )n.nwu /mm05o a5b0ci pe+(daf )zne of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in ag)+fq2x2y8okywr+ x a aw+lk1ixd 7,j glass capillary tube with a diameter oi1lyjd++kk28xa7 gw) r y,xqw+ xf o2af
0.50 mm?

  A narrow tube is placed vertic+ ,cm 9ohkik;sally in a 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 lowere,oc9si m k;h+kd 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 lengtoyjdchu1 i *5+h 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, how much force does the soap film exert on thhjuc5 i+ d*oy1e 0.600 m side?

  An adjustable rectangular frame has length 12 cm and wxomx94wm 6a *jidth 5 cm, and is built in such a way that one of the longer sides can be moved without bursting thm9o m6x4wjx*ae 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?