The three common phases of matter j);. t vkva-qqz+uymx7 18kd pare

  Density is

  Substance A has a den ,alq r* (7g6uohuwb9dsity 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 not a unit of pressuyu6a 37 asbn0sr7o.vore?

  Consider three drinking glasses. All three have the same p4du .q,6jhr lm,-wsh 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 C is narrower at the top than at the bottom, and so holds leshulj-swm,,p r 4.qh d6s water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the differen(7gu, xtkgyin2 butv :0*(qxzce between the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happe -mi/ l*),wr*y0zuae6l-filbkg ht t8ns to the absolute pressure at the botikylg6iu8h*wl-e-ab * t tmrfz)l, /0tom of a pool?

  You are originally 1.0 m beneath the surface of:r3 ojjyi62ow a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute presjoy:3 o i2wjr6sure on you?

State Pascal's princip+0)3zp b2.njqtc nr qxle.

State Archimedes' princi xk 7kus*yq(+1 (nhzpjple.

  $50 \; cm^{3}$ 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 de8 z0gh5kxsbcbf-/ v3tnsity, what happens to tt/c05 bb3sk- f8z vhgxhe buoyant force on it?

  Salt water has greater densi*xx ojdh*c :h c3h owq+z09rx2ty than fresh water. A boat floats in both fresh water and in salt water. Where is the buoho d c3rx*h z:ochq*9xj0xw+2 yant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats 2hm .ja,qj q)bw-z., pool d(win both fresh water and salt water. Compareb-zp(,w dqmojwjq )2.a,l.oh d to the fresh water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercurz)p t(zu7p)l 9rg) bhay. Where is the buoyant force)zrzp )thp ga7(l)9ub on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake,/oibt lhv4hr 8,m l cz859fp+r right next to a 10-kg piece of lead. Which has the greater buoyantirzl+ v8pm8hc5t orl4hb9f ,/ force on it?

  A piece of iron rests on top of(s (47 zaoinna6i 5e/ 1dcshbf a piece of wood floating in a bathtub. If the iron is removed from the b6eio4nn (fsa7(5i1das chz/ wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sitresvr 4im; wtp59p7a/l9o3f ps on top of the first piece, and does not touch the 9tlfre5so/;9 3i7pa wrmv4p pwater. 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 point B : c wy4+z/fxgfis larger than at point A. Where is the speed of the water greate:gcf4wz+fy /xr?

  An ideal fluid flows at 12 ow,r;ndh wvxb(*, ,hkm/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider( ,obk;whvh,,dr *xwn section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pi7l* 3h, jbzndrnjk. zgji)l,(pe narrows to half its original radius, what is the flow speed in the narrower g jlnj)k * .zdnjrbh3,i,lz(7section?

State Bernoulli's princ mgjomp2:hs tk)17 t4 .p4hhsoiple.

  Which one of the following is associated with the law of conservation of energy k(1om/,em+5g -m v+gwrfm qnkin flgr-+mgf mo m1mkkn(5 +wq /,evuids?

  As the speed of a moving fl ba9 62pxsal lz 7op0;xdvkw-2uid increases, the pressure in the fluid

  Water flows through a pipe5(6 j.ucq f+9rlr is0kkrg zh7. The diameter of the pipe at point B is larger than at point A. Where is thu .kg+9 z675jsrlk cqrf (hr0ie water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is becaus sfgqz6oua+a 2 ddmx4y92b.-.q *ouvne

  A sky diver falls through the air at t+l5bi8tiid: .)r9zuqo fk )bx erminal velocity. The force of air resistab9) koi5fu+r .i8b idq)lzt:xnce on him is

  Two Styrofoam balls, of radii Rqb29m/)l /ai7 1 rl*kankqd td and 2R, are released simultaneously from a tall tower. Whi 7i2dln krl/ *)1a/dmtbaq9kqch will reach the ground first?

  When a small spheric)m3g-ccvs cx +al rock of radius r falls through water, it experiences a drag forc3x cvm+sg)c -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 throughjd4a8m k8y ie47 zr-ug a narrow pipe? That is, if you made a 10% change in each of the quantities below, which woumj u4dag8y78ezkr -4 ild cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, bq8fchck k600w ut pipe 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 thwcq0f h8k 6ck0e flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same diamet9qu/f:45fnfwxp zep8 er, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across tn 8/x 94fezfpu wqf5p:he 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 seems tomf;mf ,-mpkm(2ed2ui be asskd-m2p emf u; fm,m2(iociated 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 of

  When a tube of diamec;2v f1q2 v l+azl1hmjgi1k /dter d is placed in water, the water rises to a height h. If the diameter were half as great, how high would the j+ alql21f cmh/d1;izkg v12v water rise?

  Certain insects, such as the water bug, are xmn39 kz 0)rp,x-ha xusufficiently lightweight 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 azpx,m -r3kh)xa uxn09s long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water bug s xq8pr/u ktwgr/y*6rshwbv q/28l15, 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 upwar rts/slb8xpkh ww5urq /2q*y/r 6v g18d 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 4.00 cm has a mas+,z fxvvg9t 5mv-v8yos of 30.0 g. What is its density?-yzv9mvv f+ 8gxvo,t 5

  A liquid has a specific gravity of 07x +2q d2pcxrvr(j i,5v:g ong.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cgjgg8hc gta(x c3v.q1 4k:6smm x 4.00 cm. What is the maximum pressure ia81 gcqgk34.:cjvsx6 (h mtggt can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. zk :t ij;p(klf6i1ey6 Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submari 9yqodmks7os/aej+ , 5ne withstand at a depth of 120.0 m in thedoy5as o/s, 7jk9q+ me ocean?

  A circular window of 30 cme:ds j2* 1r9z6a,vloq7w ez dq diameter in a submarine can withstand a maximum force of dl sarewq2 vo79zqje ,1dz *6:$5.20 \times 10^{5} \; N$. 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 par8r +fjzt na6j be6w.3jp-w1ressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m : -kbo/*ba-qd xgp5iubelow the surface of sea? (The density of -ud-kga 5 / *boxp:biqseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location brbie. ,*xxi)c5nw5e 15.0 m below the surface of sea? (The density of seawater e in,5xe i.wb5 rc*)xbis $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machingwvq194sm m g9e. The small piston hq9gg 4ms19mw vas 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 5of; :v2rl p mpup-1bwa044 ddt.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 weighing24pl1w:0o;uadr-bf 4d p tvpm 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic pisto7f .f2b-5es8kv2 svqiq gre.znof1 k/n. What force n7kr 5es ifok.gvnqf1 2zv2fqe.s8-b/ eeds to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of anbu) 1tfp* :pm hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift rai m1)f *bt:punpses 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 iqu* 7p k*syl.el-2 9xd8txuuu eo*+sxn air and 30 N in water. What is the buoyant force of the wate2tl*uel 9s.up8 us oy+xx* ud *-eq7kxr?

  An object has a volum9.fu9r)jfm )nr2x/fd9s a lxhe of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of so c3gsip eb fu4jly*ie (n+;f/0lid iron is supported by a string while submerged in wate s 4efbie nyg+f/30(cu*ip l;jr. What is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold ise3(ex5d 9o y;+kop foi $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarinm80 t*f*kk uaglhhs/3 e (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 1upf,+ otu27ugwwt m0when it is in air and 6.86 N when it is immersed in water. What is o+wguft,0u1 t m27wupthe specific gravity of the object?

  A container of water is placed on a scale, and the scale rearla,qp x 0vau**ps gdf2*e )z)ds 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread a rgx )) saa*q0ed*zv, *2lpfupnd 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 densityki w 6x/ s-j1qj,kilr0 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 bzxq77i 8nb5 3(sgjshl arely float in water g8s75zsbnhjxq3(7 il . What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 0.5u v3uj7 c wv/v4-nf zrzu8k ,tlxt39q*0 m high. How many kilograms of mass can be loau*4rutz 3qv,7 uw 9tjc v-3v z/8nlkxfded 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 ith6i6 +scf4vc*gq i1m ws volume beneath the surface of the water. The weightg 4ws*qv6i6i+cfch1 m of the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in watgq77g j2w s9wf1a c2ober with three-fourths of its volume beneath the surface. What is the ob gws2jwc972 aobf7qg1 ject's density?

  A 200-N object floats with three-fourths of its volume beneath the surface p0v jg8l, sv dmds-h.,of the water. What is the bud,p,-8 hmjdv0svl.g soyant force on the object?

  A polar bear of mass 20n430: (wdklxrbl s2 jd0 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific n2rb3: l(4lsw kdjxd 0gravity of ice is 0.98.

  Liquid flows through a pipe of p)q2r kh:4mbodiameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through alhru)mjr7//cl9 esgj*y/9x k 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the v xl 9lg7jkhc)/*jur9ms/ yre/elocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with abti( ) *(tl tlxl;oj;n 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 pxecd:.6 t5fuv rsnd- 47-siwjump to supply a drinking fountain with 300 kPa, re t-d 4sdufni -5wv.sxjc67: if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in twluxr1k* y0)8 jlbt (fhe bottom of a water storage tank that holds water at a depth of 15 m. At what rate will wa f*(tjyx)0bwll1 r u8kter flow out of the hole?

  Water flows through a hori 8mrh9ye kv)y9e +kt.hzontal 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 v.65e ig9/8p7+u zfd lmw d6sjpqi0caof 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 das8 du5mc izv+wegq.f6 7pj90/ p6l icm 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 odzb7f220 a6 ao 4rr6e rs yqgw mt4mxplu1*m06f an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to main6m2eoft4blaqagd16 yu2x 7p06 wrrr4mzm0 s* tain a constant blood flow?

  Two narrow tubes are placed in +g-kmpi9sdudo miz*(n /k oiia+-56 k a pan of water. Tube A has twice the diameter of tube B. If wati(iouadi*mn/ zk pid6g9--mkok s++ 5er 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 +c-+ cq m1 .:x-dtbxeu ) zsxf2ur/pjacapillary tube of diame+/j -- :qm1 d2z xxcapfc.uxbst)+uerter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass ht0(a/vx4 -*fvjru m xcapillary tube with a v -j4 xh*vf a(m/rut0xdiameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water+ouh1)f x 3tcyj ;zct* rises 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 th3cuyhf +*o)1t;z jtx ce tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a soa3zhbk*zigy ki2c 1 ds; wazij+*2k,l(6g xj v3p film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much force does the soap filmv*ckyxgdza ,bk2h*;j3jw 31 +i2gk (lszz6ii exert on the 0.600 m side?

  An adjustable rectangular frzh32qkbu635kl 2 y gorame 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 m3 yub2kgo3r zl56hq2kuch work is required to move the adjustable long side so that the frame is 12 cm square?