The three common phases of matter areir 6i1 *tb/gakm k)bn5

  Density is

  Substance A has a density o** sw:nxgnikw 2-ft r4pyw1a9f $3.0 \; g/cm^{3}$ 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 pre5m a)bjyw) f:lssure?

  Consider three drinking glasses. All three have the same area base, andu2;og,(qotftu5f tm 1 all three are filled to thm(t otq,f5 uuo 1fgt2;e 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 p 8nndlep15k /oressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at thehq8/w +aka- ob bottom of a pq/ -hka ab8ow+ool?

  You are originally 1.0 m beneath the surface of a poo l03emj v1shr gc.s6u/l. If you dive to 2.0 m beneath the surface, what happens t/sesgjc hrm.u10v3 6lo the absolute pressure on you?

State Pascal's principkp8*9hzg q.dr)zg) dv le.

State Archimedes' prj, nc69, pa9 vdy,m0zww :m(ej -nntfwinciple.

  $50 \; cm^{3}$ 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, what happens k; pe)u;wb)ed to the buoyant forceb;;epud )kw )e on it?

  Salt water has greater density than fresh water. qw4sjlfclp5 nct63 0d) b 72pw A boat floats in both fresh water and in salt water. Where is the buoyant force g24cjl05 wwc3tflb p76p)dn sqreater on the boat?

  Salt water is more dense than fresh water. A ship floats in both+eu4nvkjxvs *4z1x q0 fresh water and s0zvxxek*s1n4 +qju 4v alt water. Compared 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 mercury. Where iw;dekq7 ) v/ 6cgo6t(ys,leoh ,txf(ws the buoyant force on the ball xlh6t,6wowv(g)7 t ec/oefq (,;ks dy greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next gj*r+f)rpebj*g: zo: to a 10-kg piec eroj*frz+::b) *gjgpe of lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floatix 9 itlg.yvu bc4c538nom2w1qt)novjg -w: w 8ng in a bathtub. If the iron u-wnvcn59gi 4qmolt88b j c2g.y1 w ow) txv3:is removed from the wood, what happens to the water level in the tub?

  A piece of wood is float ;;/xwt cj0evj8q7rt uing in 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 water, what happens tojq 7ex;tjw t/ cu8r;0v the water level in the tub?

  Water flows through a pipe. u;4, t:s0q8bnni mwi-rn;rg w The diameter of the pipe at point B is larger than at point A. Where is the speed of the water greatuw:gn0tii -,; nrn bsm; 4r8wqer?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twig/onu l-(dn l/bj gqg.mx1* x1/to ,yzce its original radius, what is the flow (l*/gunb x1- jynq,g mgt/l.z/1doox speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe hhx19fbk loep 6tzokvo5/) ((ccm; p1narrows to half ;5(9c6 z xkm/vl(fo1 bo 1ppko )cehhtits original radius, what is the flow speed in the narrower section?

State Bernoulli's principle.r bd:l + .x74lmb2kg+ tvmkm/u

  Which one of the following is associated with the law of conservatio. 7q 6cwy4u+nq xa5tobn of energy in fln4aw u yoqx7cqtb 5+6.uids?

  As the speed of a moving fluid increases, thegxji. 3azo46 fiaoo00 pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B , b*nwznx8l0nis larger than at point A. Where is the water pressure greatesz*nnxwl8b0 ,nt?

  When you blow some air above a paper strip, the paper rises. This is becau7* +ech k8 oq26ikkgqpse

  A sky diver falls through the air at terminal velocity. g: myle;7h:b:t g z(tmThe force of air resistance :;mme(zgy: 7:h lgtbton him is

  Two Styrofoam balls, of radii R uiu );m+b*kehmlx* 7xand 2R, are released simultaneously from a tall tower. Whe uu+**hxk)x7m;mb ilich will reach the ground first?

  When a small spherical rock of radius r falls throuftt)mo8;t:apt65vxi 6.y gsc gh water, it experiences a dr65tt6 iax tgpy.c)os;m:8f v tag force $F=arv$, 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 greate0)g r(e e4*jjkhajl*mg2 zyi8st effect on the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below,ieg4me rak8*j2ly*)j h0jgz ( which would cause the greatest change in the flow rate?

  Two horizontal pipes are the sa4a2 eyjy8d1pvjn+ma u;2i 9lame length, but 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 tl v2;jie48yya u 1p9+2 majadnhe 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(3 d 42ar0gt: mrapodls pipe A. Water undergoes viscous flow in both pil :prda20o3 mtr(gad4pes, 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 often t 6pp (;nzoeu2yastes greasy. This "greasy" taste seems to be associated with oil spreading out an 6(2 opp;zyuell 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 water rises to a heig wa.lk fszgfli 1m z:,-i3x-+dht h. If the diameter were half as great, how high would the wmxzg az k1,dl.s- iwfil-3+:fater rise?

  Certain insects, such a/r /o, :frv+-cfcs xb1j3qzx zy2 ky6rs the water bug, are sufficiently 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, bugf/ y3brc6frs:z -q2+ /x,zkxov1ycrj B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as the water buum*mf4 :jmj7fakwq np56 +m8cg, 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 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 mw7jfun6mmp5c8 k :fq4m* jam +aximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm has1z)ah*4du lohungko 2s 3l, k. a mass of 30.0 g. s koluk1*hz),4a .hlg3 2 oudnWhat is its density?

  A liquid has a specific gravity of 0.357. What is its density5;o e-rxcvdit )cv6fvqr 3 00n?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Whs z: s(a1wm;:-edoje; hbse+x at is the maximum pressure it can exert on a ox;:z;hsses: -+ (da jbmwe1 ehorizontal surface?

  A person weighing 900 N is standing on snof-)nuw v+( gp9e q3uxry5s0kswshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (abso )qq2c uwlwwrb-y kqm89a- 2n57ek zi3lute) must a submarine withstand at a depth of 120.0 m in the oc-m2 q ne735uz9b-k )2 a8kilqyrwcqwwean?

  A circular window of 30 c6o2y 7t: x(h ewkxb6/zcg6*nf sblee.w4hju7m diameter in a submarine can withstand a maximum force ycx6bewh6e*w/ .(xbjekh 6 to7lzs uf2 7ng4:of $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure imq;,s:ah yw(s x/ y(ikf the absolute pressure is 300 kPa?

  What is the gauge pressuua37z * ab6ju8bldig*re at a location 15.0 m below the surface of sea? (The dl86 ujbzg ** 73aiuadbensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of sea? f 5q6p*cc(xto(Thp(t5of6* qxcce density of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic m6k7dbn9ses58 t7dmvlb6omm w.e + sk. achine. The small piston 8 be6.mevn65kk77 dw.osstms +m db l9has 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, tm.jp/ih .5s vp+p)ojrhe small piston has a radius of 5.0 cm and the large piston has a radius of 15 cm. What force must be appliev p/jmrjp .p.)o5+ihs d 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 cm diameter hydrf: xh uf6ze3 fk53pc4)rs9hx gaulic piston. What force needs to be applied to a 5.0 cm diameter piston to acco935urhxc:h6g efs)pfx 4f z3kmplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 c(2gt eokt6d3 j76hmrfm, and its large piston has a diamj7( ofk6m etr326tdgheter 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 an q;iy: (lu2wgk tbbcf ezwt+0;1au/- zd 30 N in water. What is the buoyant force of the :qk tiab-y;(w gfz luu01 z2wt;+eb/cwater?

  An object has a volume oiacdt/w lx0/77vm4io2dl1sd f $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is su,e7ln:d, khc bpported by a string while submerged in water. What is the tension in the strinek7 cndhl,: b,g? (The specific gravity of iron is 7.86.)

  If the density of gold iubnw9f(w86ocb.w3g k s $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (rneff;ve;)j:+g l eiv q k4/9mdensity = $7.8 \times 10^3 \; kg/m^{3}$) 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 j sm;cvb(cv), in air and 6.86 N when it is immersed in water. What is the specifi)c (,jcv vm;bsc gravity of the object?

  A container of water is plazfxdb ,h(/;b m/yi-v kced on a scale, and the scale reads 120 g. Now a 20-g piece of copper (speci;fk ,/h/bymi-dxvz(b fic gravity = 8.9) 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 aniv,0 q 3cx9kxcd 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 len393fozfv) :vi yrv us.gth 12 cm and diameter 2.0 cm will just barely float in water. What )o f3vy:rv.z3suvif9is its mass?

  A rectangular box of negligible maz7c kg3s5lb2;ywx*.rq/iw-l q s 5 aczss measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the bo5 x iccgk./y*7- rws;ql 3las2w5zzq bx 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 volumi9 d*(;(1gqed lxijq2qus8h- g5 xjnle beneath the surface of the water. The weight o 5d q1q-jjil8dsghn( qx*u( xgl9i ;2ef the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume bb; l ozgtz5f8k. i*,mpeneath the surface. What is the object's densitym zzi l.,t5kb ;op8gf*?

  A 200-N object floats with three-fourths of its volum 4ja5h9f lbj*xtb7*vu) 3eazxg9ox3ue beneath the surface of the water. What is the buoyant force on the objeca ofu3tjx93* vbul7j9gxe 5z)x*4h b at?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the milpsml 1 /gfn96nimum area of the floe that will just support the bear in saltwater of spmn/fs1l 9g 6lpecific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of;r)h5y4q djxp diameter 3.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 14/,dna k(x du:/spibi.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity x4/bsdnpiu, k/( d:i ain this restriction?

  Water flows at 12 m/s in a horizon-) bqekvn ohw8ke;z-7dqd2a 4tal 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 ;3 ne4z*mlzxu it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m abov3*lnex ;4zu zme the pump?

  A hole of radius 1.0 mm qw9/qjdhl6,m occurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of thwqm /,j hl6d9qe hole?

  Water flows through a horizontal pipe of cross-sectional arek ;d y.9c+htnja $10.0 \; cm^{2}$ 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.l+v ymi7ze7,d .jpc 3y 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 dv+ iljpemy7.yz7, 3cin 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 fattyvmci6d0 bq4sy*mc4jf )9w 4joh,d8jx tissue on the wall of an artery decreased the radius by 10%. By how much would the press8m yc, wmdqc4jb*h9 v4x)46od ifj0 sjure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. pn//-ulxdtrs(4 - hpi Tube A has twice the diameter of /lhr/u-p4itx(p- sdn tube 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 highb;;kz*npo1s r will water rise in a capillary tube of dias1z;*pbno; r kmeter 1.2 mm?

  232

  To what height would watetcc3) 4w: m *i25phpphmwb19(qf xbe wr at 0 degree Celsius rise in a glass capillary tube with a diameter ofp9qe :pc3) wt4ci fmw2(hbm xpwhb1*5
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises init38oc5ji2f/y j0lvit vg *q+ :lk0e m 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 sc0lj5i +yi fqg3/8:v*oekitm2t0l vj ome soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m wiq7 y di/3ka6sy4hrb r/th a soap film formed within its confined area. If the surface tension of soaphyar r /dq6 4i3/skyb7y 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 length 12 cm and width 5 iy;43otiyy*s 4 yl-gr2poz q: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 adjustable long side so that the frame is 12 g yo*tiy2o s;3y piy:zrq-44lcm square?