The three common phases of matter al un h 99p9w-vmln66 -5psbqdwig- g7ere

  Density is

  Substance A has a dens 61n, o 7nzx9u;3nocvmtb tc1xity 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 9zsgc3 v6nfo,not a unit of pressure?

  Consider three drinking glasses. All three have the same area base,8zvhs:h(vuv yr) : 1vzoq+9 6l,bdsto 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 thqotdohzs(: : )vvzbl ,yr8+ vs91 6vuhan 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 tire cal;i.i/n m xv*ieled?

  When atmospheric pressure changes, what happens to 0ced r t7o,cr5the absolute pressure at the bottc,e 0cdr75tro om of a pool?

  You are originally 1.0 m beneath the surface onvk k0w(yqm+mb o3 ij3p-4jd) ius8.uf a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute press+mm- qpwn(oiybj) 30k4vjkidu38 u.sure on you?

State Pascal's principle,n ::r h7ia 4 udx82+yfkudgwk.

State Archimedes' princh ahgg.ds)* 6*7 xuczxiple.

  $50 \; cm^{3}$ 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 cons q q4wd)8ubw-ntant density, what happens to the buoyan- nqq )bwwdu48t force on it?

  Salt water has greater density than fresh water. A boat floats6+ 2olkakqr ib01;ks68f i1x xm8qefm in both fresh water and in salt water. Where is the buoyant for1if kal8oq m8;xbk i1km6 se2rf06+xqce greater on the boat?

  Salt water is more dense than fresh water. A ship flol f81avshv+c((r (izaats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt water ivh(zfai+1l s a(c(v8r s

  A steel ball sinks in water but floats in a pool oax5z6s 1fpm390j zwc 4oppk;t f mercury. Where is the buoyant force on the ballx z0pw3pt1k9;5 cs4 f6paom jz greater?

  A 10-kg piece of aluminum sits at theffl66sw mx, *c bottom of a lake, right next to a 10-kg piece of lead. Which has the greater buo6mlc6,xff w*syant force on it?

  A piece of iron rests on top of a *z:uvw.; *gi-yuun bz piece of wood floating in a bathtub. If the iro;zuwi n.by*gu*: z- vun is removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in l+5b3s1v-n :g,u lgseuuwh*ua bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. I5hluusv- :eu+lwgs,b 1n3g*u f 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 is larger than r7ysuh3wbc*5/np*d2o u0uuph mv 2i ) at poinph22i*yb0/vur p 5*o7dw uh)3suucmnt A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widen xb)epkk8( 332s c2fgikczbj5 /7byzxs to twice its original radius, what is the flow speed in the widepi5f k g s)3c/k(jc8kxb2 xzze7 3bb2yr section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrows to hal c/fm7nm3(rbqx lgq7. c j:bd0f its ori/ l c.n :(370qfdxb rmcmbg7jqginal radius, what is the flow speed in the narrower section?

State Bernoulli's pri8cknuk)3 u zmww 11xt 1caa)62gh yw9inciple.

  Which one of the following is associated with the law of conservation ofq m8 ybz75wl2e energy in flbe z myw85l27quids?

  As the speed of a moving fluid increases, the pressure in tq q.m( jxwf4* cm2:dgnhe fluid

  Water flows through a pipe. The diameter of the pk(thz93u k .vtipe at point B is larger than at poih (kt uk3.ztv9nt A. Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. Thi,rz: vy)ms/56zifz 2vm y51anre ae0ps is because

  A sky diver falls throughm7o.e:s*pqf : ky6ic w6c o z4+cnzgt9 the air at terminal velocity. The force of air resistance on hnzm 4tc*foy6 g.+psw67c:oq ki:e9 zcim is

  Two Styrofoam balls, o5invk.+ tdl 3 4+e(jt ejcu*ohf radii R and 2R, are released simultaneously from a tall tower. Which will reach tno4 ct++jde5ui*v3(tjk h.l e he ground first?

  When a small sphericall 3bojwn4zv ); ;z:h (ckqs.xn rock of radius r falls through water, it experiences a drag fz (s c q4:okh;j.zlwv;bx3)nnorce $F=arv$, 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 oe19(byv97ojf e4a qj+ge cfz9 f fluid through a narrow pipe? That is, if yoazf9b7gf9e9(c yeo1q+ j jv4e u made a 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 t.g5k53xxvhxt wice the diameter of pipe A. Water undergoes viscous flow in both pipes, subj53xgkx5h vx.t ect 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 long as pipe72u, qey( ifp0xgg+81 2 63g,rbzovr uoxuhne A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across 7xg2vp +u38uyq(g,oioz2hr e 0n,g16eux fr bthe 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 tastesh iwyfh0y095w 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.ww h0f90h5yiy To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in water, the water rises tf gm705y4rzc:/o es3l+lq whb)5ac sdo a height h. If the diameter were half as great, how hib:+e5acms0/c w )qoz7 yd5grf3l sh4 lgh would the water rise?

  Certain insects, such as the water bug, are sufficm(acu)v z1 xts0 bzh51iently lightweight that they can run on top of water without breaking thez5u1zs(xvhb)cm a0 t1 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. What is the weight of bug B?

  Certain insects, such as the water bug, are sufficiently lig zm wx0yx6r.d)htweight 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 isyw)x xz 0.rm6d, 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.e;1n e;y-/l mhum krn cm has a mass of 30.0 g. Whaer muhn;; y 1le/mn-.kt is its density?

  A liquid has a specific gravity of 0.3(y(r5sd(/5 nxldko b u57. What is its density?

  A brick weighs 50.0 p;ayc mky1 ,t)N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exerm a,t yp)cky;1t on a horizontal surface?

  A person weighing 900 N is standbddv;0 p8s 5)ea +fc1*xo6,e ykmutjaing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) 2kcap37 zwu4imust a submarine withstand at a depth of 120.0 m in i4 p3k a7cu2zwthe ocean?

  A circular window of 30 cm diameter in a submarine can withstand a maximum q ojm7xq* o:ve9 z,,ctforce7omvo qc 9, jqx*,:tez 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 if81vxe6ufhn oz;9vo6s the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? (The j2p )hlu *r ccp6(kaghza po2*1. ia7kdensity orgk 17ap2u)2opc*h z a 6(lk*iajc.p hf seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the(pz l vvbt ; cms92a wj.:4vu5avw)j8b surface of sea? (The density )mjvv2; .wab(u wj :bcs4a9t8l pzvv5of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits f f4vp8 3.m lxq7qv*fuon the small piston of a hydraulic machine. The small piston has arxfu f3p 8lv.qfv4* 7mqea $2.0 \; cm^{2}$. 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 5.0 cm and;hymg *0)er, 9gajvcd the large piston has a radius of 15 cm. What force must ;*veryg9jm 0c,dgha )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 o;yzet (otuo/-c8yq,25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplistecuoo ,tqz-oy 8(;y /h this?

  The small piston of a hydraulic lift has a diameter of sl:81xxl9sk t 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load olx:l19k s8stxf 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 anrv9s,u qattgg k)/zq,.8h g2 :s ssk3ir and 30 N in water. What is the buoyant force of the waa/.qsvszk3:gggqn2rksts ,8h9 , )t uter?

  An object has a volume of;g17nmtlbr. c8 jv ic- $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solii j2 )9;aix96neq)jhgi y9t wc3gyl /pd iron is supported by a string while submerged in water. What is the tension in the string? (The specific gravpqw9 )g3 j;injcaiyl/92ti6x g9)h eyity of iron is 7.86.)

  If the density of gold mqwj ri)a+pv 2w88nmlh1 -;nm 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 submarine (density 1mkrzny+e8kxv9z 82y = $7.8 \times 10^3 \; kg/m^{3}$) 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 i3/ j oc/o6wf2vy zflz6syj2l9s immersed in water. What isczlwjz y2ofyv63 f2/j9ol6 /s the specific gravity of the object?

  A container of water is placed on a scale, and the scalenc/5rl rshx ,6 reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, ncr6h/5 n slrx,ot touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass of 1.0 kg and densit 7 bxsvo-a)gdacal727y 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 m0 u,)/i4 sypd7nwyopcm and diameter 2.0 cm will just barely float in water. What is its mass?yp/nywd o i,s4mp07u )

  A rectangular box of negligibledo,fpuoxa (69 mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms o adxu96,p o(fof 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 benwjx u ;ygw)nd;1f hh0e *i/wt5eath the surface of the water. The weight of theed tn;/hiu fxw50 wwjyg*)1h; displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its vozq ub moe 5 m:mbb.d5i/ *7;ft,um(qsjlume beneath the surface. What is the object's *e7bb m5dmtm,bumi jqqz 5:s. uf;/(odensity?

  A 200-N object floats with three-fio8)c tg60 x)-zy/oc ip/qgfsourths of its volume beneath the surface of the water. What i sqy 06ocigx ztp)8o /)g-icf/s the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floee5ad,8db 8edb rsks 72 100 cm thick. What is the minimum area of the floe that will just support the bear in ss2 ab7,d5d rkds e8eb8altwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the4o njcm 7**wm0h nkl 6u0dnvs4 flow rate.

  Liquid flows through a 4.0 cm diameter pipe n:3zusgnjg 3 5at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. n3j n gszu:53g What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipl 0ymg0 eoc5 .4ht-sg..qcx( 8ypfv dwe 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 tabnrot*6: vvk8vi()js ke for a pump to supply a drinking fountain with 300 kPa, if th ksj6 ntio v(r:*vb8v)e fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs icm+ 32 nzd ennub+mokp+s9/ y*x98 hyen the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow o b+9znc9y*n28 +my+ nm/ed 3kxseouph ut of the hole?

  Water flows through a horizontal pipe of cross-sectb:6qs3r) om euux8fh4lj, e,tozi1 b5ional 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 0.2s,2f fk)ylulz a 7eu;90 Pa-s. How long would it take to pour 4.0 L of oil through a funnel zu, ku;fsyl 7)9le2af 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 decreasel*kit05jy5 n w.:7luw8fevrirdh d q6o.,+ hl d the radius by 10%. By how much would the pressure provided by the h7h05hdtlv+ jy 86nl ,ifrod.w:l5iur *eqw. keart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan o wj0t gg,krkz w1rucp0 2)wa6 3y;y+ypf water. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it risa,kjgk+cr0;w2t yrgyp wz 1w0)up63y e in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise i ;u g 07xv)etz8*a;pg et(:hkzso7ovt n a capillary tube of diam7t;* p ( skztvoog:e;thgea)uv087xzeter 1.2 mm?

  232

  To what height would water at 0 degr 1hv4ndtz*u p2ee Celsius rise in a glass capillary tube with a diam 2uv4nz*td1ph eter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rcyo*rpc./ 84uiaq;;q0h vhy t8vdi.g ises in the tube to 4.0 cm above the level of the pandg yh/o.t*0v4v; a8urh8 .yip q;cciq. 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 tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a9t0 ebknski9; 7dlw: ) yr3+ako.j aig 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 k)l:rdt7 n ikibko ew30a 99.j;a +ygsfilm exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, an9k ;5edht uktn 1 td29se3vep6d is built in such a way that one vt96eeed;9k s nhd 23tp1uk5 tof 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 cm square?