The three common phases of matter oe1ow1lh0g l;1 khd 4x:y/u uware

  Density is

  Substance A has a den r:xrgq7 un4qhnj ap6u7 kns*;uu/g:m 66mg0zsity 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 1z. ububca4wbr9 yb.1 unit of pressure?

  Consider three drinking glasses. All three have the same areaf( 8z/rkqfng9-( )u ;ohv zxpz 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,- nz9ozfv rfx)z((8p u/khqg; and so holds less water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference beteioioh3hh, 2 , qz-+iwween the pressures inside and outside a tire called?

  When atmospheric pressure changes, m usv-,a .e*eysn b89cwhat happens to the absolute pressure at the bottom of a poon*mu ,e c89a.-ssvybel?

  You are originally 1.0 m beneath the surface of ae j;+(zmxxv n1 pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on you?z ;(jnxm 1e+xv

State Pascal's principl sdw, fx4 a9p4mjtir*5e.

State Archimedes' principle.lqb++u(q: + m,fu wwma4ax f:a

  $50 \; cm^{3}$ 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+4fok zqnrt7* water of constant density, what happens to the buoyant force o+q *zoknf4tr7 n it?

  Salt water has greater density than fresh water. A boat float4g.6 qwpfl+m9dj6jcg z+ ke) bucx(s8s in both fresh water and in salt water. Where is the buoyant force qjg . g+u6b+ ld89(fmkw6sx ec4)jzp cgreater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh water p2n1mdt :u 6tpand salt1tt26:u p mpdn 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 ge jspx7,(i kul,*,x1x 2jwwn pool of mercury. Where is the buoyant force on the ball great,2wi*x x,jeju 1ksg,xw pl7n(er?

  A 10-kg piece of aluminum sits at the botx iyegs uutsx+s)// rx+ 6fn2;tom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyant gx 6s;/y/ x s+u)2e nitsxurf+force on it?

  A piece of iron rests on top of a pihoz6fr1x25q1-brhcv qce q 4-p 1gc b)ece of wood floating in a bathtub. If the iron is removed11cf)e 2vh -xpzgr41 bq r qob-c5q6ch from the wood, what happens to the water level in the tub?

  A piece of wood is fb d af*(wn2t0nloating in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the aw*f( ndb2tn0 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 diametg+04 (v tn24qroc whzper of the pipe at point B is larger than at point A. Where is the speed of the watew 4p42+q0r hvgt(nozcr greater?

  An ideal fluid flows at 12 m/mt;mu ;3vmr w8oe3 tva:es -ue 3lqx1,s in a horizontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the wider section s m8e-,mt;o31v3tlxe uqwm ;vu3r:ea ?

  An ideal fluid flows1ci hh m/rf03j. otz3ek 0pcg3 at 12 m/s in a horizontal pipe. If the pipe narrows to half its original rccrj 3oh. z0t13peimgkf0h/3adius, what is the flow speed in the narrower section?

State Bernoulli's princip:d.ix*s4(vcbym +4 d oxxlf7lle.

  Which one of the following is associated with the law o3ldw hp ,k6-iqf conservation of energy iqd6plk 3,iw-hn fluids?

  As the speed of a moving ub 9z6w9eny)kk2e/ xb fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe atk/)le5 awku 1kv 8x,iv point B is larger than at point A. Where is the water pressure grev )v alu w,xik5k8/ke1atest?

  When you blow some air above a paper stri0 d7wvmh,to3,pzkc b /p, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The f zed 39le gz8y,q*wrsyc2yw41orce of air resistance on ,yec 93 1*s gyrw28ez zl4dqywhim is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from a talqizedwm.mi -rcs;c p4som-y3n :(0.n l tower. Which will reach the ground .mo-cwr(ndms.e0; niy4 i-psczm:3 qfirst?

  When a small spherical rock of radius r falls through water, it ewls0axi5 h3z 8xperiences a drag forcew0 lxi a8z3sh5 $F=arv$, 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 fluid0b3/c6n 6gv nvs6kf kwui d /a87*enlw through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cekuk8 w36*i 6nv nslfv/ncw 0/bg67daause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diameter of *jp .c+iinn lq5o5yu4ckv/8qpipe A. Water undergoes viscous flow in both pipes, subject to the same pqi*ylvk cpo5.n+jc4inq/ 5u8 ressure 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, b s /3*rxard(2dy hqjkq50 1dwfut pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the flow rate in pipe B is Q, what is the fld0 532/wr*q xqjhdfk(1dayr s ow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to:sxuf7gcl r8jo*9o4i be associated with oil spreading out all over the surface of t cl4u8g9fso7*:x ijorhe 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 risesz4( svyat+y9d07i sod to a height h. If the diameter were h4s(va0z+97y oyid d stalf as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficieyrf:eb0t,v c1j5 t(t5zbhl 6 fntly lightweight that they can run on top of water witho,5ybbt5c6lhz etf j (fv01:rt ut 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. What is the weight of bug B?

  Certain insects, such as the wate3 y 7 mq1ud (lz,pjaua6+)zc29qosaslr 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 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 twi2 p1sqoqjzc9 sad7l)zay( ,muu +6l3ace 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 mass of 3e oj rz346ayb*0.0 g. y rz*jaob3e64 What is its density?

  A liquid has a specific gravity of 0.357. What +mji+2d) rs dyis its density?

  A brick weighs 50.0 N, and meas s .3vawt/a5rm0181knavnft iures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressur8ia/vrkt.05 v n1man1af st3we it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snowshoe has cq5e+x k9exans(a s0+1h n9atarea $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 :z.0y,jrjxyeoc+e2mg*p op/o pdh1 mz+6 l )pm in the ocea ) 6hy0m2,* xz++c :goyodp.jlrzje p1/eppmon?

  A circular window of 30 cm diameter in a submarine can withstand a maxim9 u) b ol;yc8)xu*4vtg n4zrcoj+s6c gum force of uz ;c)4s8vgu t4x*goyc n9c)bjo 6+rl$5.20 \times 10^{5} \; N$. 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 0cybw5klgi8.*teslh h7a-( g pressure is 300 kPa?

  What is the gauge pressure at a locatbukcr(:da v po+b,e 0(ion 15.0 m below the surface of sea? (The density of sea0:o cd+ ,uvbk((r bpaewater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0ksquq.p* .+t +jz7 igj m below the surface of sea? (The density of seawater ++7 p.jqt*u gis .jqzkis $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The smallbuvevjt( -oq6l77(/.mi tk fu piston has af jvt/q k7(6-u t(eibuml7.vo rea $2.0 \; cm^{2}$. 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.s7e*gtk(nt4 mj3z: h/ew7cz x0 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 20,00ek3x7zj*t:/wt ze cms 7hg( 4n0 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diahofb+6jzg80 ppux0w 7 u dl-qg., xs6ameter hydraulic piston. What force need676 .hazp gxq0+w0-djb 8,upfgulosx s to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of h13nojz * 2sqrw+xm(a a hydraulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load osx om (nawz13+2qhrj* f 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) :7vz1 wo/z:iwwyb.bj ent 4p N in air and 30 N in water. What is the buoyant force of the wjw/t)b7 .y w:vzw:ezoi4n 1 bpater?

  An object has a volume ofglgc 4an:,,cs3lps e(gp4, j e $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron isnik:y978gynz supported by a string while submerged in water. What is the tension in the string? (The specific gravity of iron i987:ikgnyn yzs 7.86.)

  If the density of go z6 , ivk40-kef3mtwajld 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 (densikx3/;j (i wq;;akc dcsty = $7.8 \times 10^3 \; kg/m^{3}$) 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 68bz3e0d qfccd -)d p4w.86 N when it is immersed in water. Whac e)p-83zb4ddcdw fq0 t is the specific gravity of the object?

  A container of water is placed on a scale, j.pol f+vxk -:n*dx 8qand the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into tx oqnkj*-8.pd+lvx f:he water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a maswcm n t*xum7;tpc59g ohl f:wb5;v1s*s 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 diameter :tge mtyc3siu)y p1-*2.0 cm will just barely float in water. What is its mtyy3cg i:1s-)m*pu et ass?

  A rectangular box of negligible m9q7 b, vgnla7cass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before itc qng7a9b,lv7 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 hg2xc 3r 4c1svfalf its volume beneath the surface of the water. The weight of cv3 f1gx4sr2 cthe 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 the:yh 8sfjmy/onjj 5ryf8*:07am xao ,b surface. Wnao 58xjyf :,bj:ahs* 78jyf /momy0r hat is the object's density?

  A 200-N object floats with three-fourths of its volume beneath thpm zr-o1ef;1p e surface of the water. What is the buoyant force on the eo-fz;p1p mr 1object?

  A polar bear of mass 200 kg stands on an ice3qps-k+rjb f 8 )x4,b dh93unh humw-v floe 100 cm thick. What is the minimum area of the floe that will just support t,)3u r3v bhp4sw9db+--kqjh fnmux h8he bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.lok n: 7rhv9x-x x2l1np-t(/ 1tjndyr 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 2.0 cm diame q ol-g:yq:;m oxetjv,;9lao- ter restri9 mq:l;t-o,:j-eaovqygo xl; ction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a ho:nv k(ran8v +amv,h ,h5pym 2irizontal 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 supp)kenh-; ebo8xly a drinking fountain with 300 kPa8);obhnk ex e-, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs v7c nowrh mg)4ow: 04 sxoap0(in the bottom of a water storage tank that holds water at a drwvw( sgx p70 o4m ocha04)on:epth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipeph 8y/v: qb;er 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 P, x-k y2v bq:5kz7g4 a 9oyp5koxw1sqwa-s. How long would it take to pour 4.0 L of oil through a funnel with 9a y -xkqbgs:wk2kvy5p75 1xo,w4qz oa 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 wa4kwrbon4,qn1mv69z xe /h -rall of an artery decreased the radius by 10%. By how much would the pressure proarqn44 -9vm x6khzw/1e rn,bo vided 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 has twice the diameter 8x ue8okey6a 3hi,l5g of tube B. If water rises 5ag lx, o3uyhe8 6e8ik24 cm in tube A, how high will it rise in tube B?

  The surface tension / 8f.hyk-nfjpsgh gn* m1+f.d of water is 0.073 N/m. How high will water rise in a capillary tube of diameter 1hg +m-.8pdfkhn/gf1 s.y nf*j.2 mm?

  232

  To what height would water at 0 degrem) ku. 7v:pfpzd1 i2jqhj0,spe Celsius rise in a glass capillary tube witjvqpujdh7.i20:1 kp,z s)p fmh a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan ofiir n/wk(jg6itx:3xmgg *yvbr 2w*:2 water, and the water rises in the tube to 4.0 cm above thw g2 rgv2:j*b/6mi*xyr igt(k3i nw:xe 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 tube?

  Consider a rectangular frame of length 0.120 m and width 0.600 m with a sgj;ewd) 5ua z6p5v1f koap film fodaueg;65pjw5 )fk1v zrmed 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 the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and widthbn a1xtbrj *6;,8btzm 5 cm, and is built in such a way that one of the longer sides can be moved wizttb xrj;bn 8ba6m*1,thout 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?