The three common phase1sq vb utc*5n2s of matter are

  Density is

  Substance A has a denfj 7b.ld3 b6cq1f:uj xsity 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 pres r1x9v i/m4bpesure?

  Consider three drinking glasses. All t0 6t- slayoz0zhpz2k9 hree have the same 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 ths oz 90k2z6tpy0-l ahzan 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 insid(b3w0ey 3 ah:x asdrb3e and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressurexo9 pwwz:x2 (ithm zxk g3),q2 at the bottom of a pool(k9x )zht2q2g3zmxw: ,xoi pw?

  You are originally 1.0 m beneath the surface of a y.4,z dp mikmamwb 1b1;sj )kxzx:)u*pool. If you dive to 2.0 m beneath the surface, whyp.ma w sbj m,z;*bm: )1iuk dk14xxz)at happens to the absolute pressure on you?

State Pascal's princi;r* 1( bq9(ai ucachw,qvyb k0ple.

State Archimedes' principra-n.hf2 dr x :n(p4sxle.

  $50 \; cm^{3}$ 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 hpnp c1trr,zp-j+1 ( m-n :0wpcmcs/sbappens to -m c1tjnmp +pr:brs1c np0,- (/szcwpthe buoyant force on it?

  Salt water has greater dens2jqts3gh kakz iq.+k4k6olp- 24- lajity than fresh water. A boat floats in both fresh water and in salt water. Where is thezlk-kg jijqh+ laksoka. 42 p-3q2t64 buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in boxnyt0a/+t .- scmr - z;1+ld,s kfgqukth fresh water and salt water. Compared to the fresh water, the volume o, /kmlnxgr;a -++t.ycf udqks-z1t0 sf water displaced in the salt water is

  A steel ball sinks in water but floats in a post89*no:; *svhq czfzsqd/ ogp h l, uw*p/+5col of mercury. Where is the buoyant force on the ball w,9 hzuq8c5pqs/pst/gov;z* *c:*f s+h dolngreater?

  A 10-kg piece of aluminum sits at the bottom of a lakq,.2iy0yu e : 4hrjlfqe, right next to a 10-kg piece of lead. Which has the greater buoyant force on it y ,.fy qu4qre2:jilh0?

  A piece of iron restsioak(u5hw w7/r ys(gz md: u2; f3aua7 on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the w2u z7r(ag 5 w(w3 umahd:7ays;fkio /uater level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sitnc)krp3-p x)p 4z1 trts 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 happen3pcrpt-1z)t 4k nx rp)s to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point Bku/ 4 qb.r g4ocsw(62ytrsi9s is larger than at point A. Where is the speed of the w2owgsyb.ks9(64 tsc /4qiu r rater greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pnep nu gj,l.civj9f zp,8:y .2ipe widens to twice its original radius,2p:.nv y,c.epl j9ifg8,zjn u what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe n0g7bhza(l2cdyfgi a4* 4hjz6 arrows to half its4f*b2(7h gglzhca6yj 4za id0 original radius, what is the flow speed in the narrower section?

State Bernoulli's principleurew;u**ufk6af coxm r 563r7.

  Which one of the following is associated with the law of p 3uf g-u *4wvy*(3ghu h/odc5p+rft rconservation of energy in fluidhgf h u4vp* cp (r uo-t*5y+wudfrg3/3s?

  As the speed of a moving fluid increasezvoluj ,s:alji g1o8s7,e 72ns, the pressure in the fluid

  Water flows through a pi/t6xk a3wvjs3ie 4d- ppe. The diameter of the pipe at point B is larger than at point A. Where is the water pressure greaswtp -xd63 ak /4i3jvetest?

  When you blow some air above a paper strip, the paper rises. This is becaixb8hm 1 )w)8g)e ym,;ct mntluse

  A sky diver falls through the air at terminal velocity. The force oa6ph- oa em4o*f air resistance on him ise apm-ho*ao46

  Two Styrofoam balls, of radii R and 2R, are released sv2tvwe n /5p8 ns9y9djimultaneously from a tall towtd9 9vpev8 ysjn /25nwer. Which will reach the ground first?

  When a small spherical rock of radius r falls through w 8ds9ifpu3 4d1jyfs. y*n hvz5ater, it experiences a dragfi5fvsy3. 8hsyuz d1 nj 4dp*9 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 greatest effect on the flow of fluid through a narrow e- / .y+;hyh0c tabgl6ip-lpv pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in the flow hv bc6 gli;hy-p e/-.t0y+alprate?

  Two horizontal pipes are the same length, but pipe B has twicet) 0az :bk +ca 7jq0m5qx1dvsv i1e)bi the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pika)+dmv7 qjc0:si 10v xaez1 5t)qbibpes. 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 lop */v8d ln 0aao, vg/qa*vveq(ng 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 flv( eg8anv/0*/o q,vv*dqpa l aow rate in pipe A?

  When soup gets cold, it often tastes grvwwohov:n;slb +1;p 7easy. This "greasy" taste seems to be associated with oil spreading out all ovevw7p :wvoob+l;h1s n ;r 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*,gf pd ixpehr2 -1ym( is placed in water, the water rises to a height h. If the diameter were half as greagx-d 2fr*(1ypp him e,t, how high would the water rise?

  Certain insects, such as the water bug, are sufml,. 2x0zd zo x;v,syrficiently lightweight that they can run on top of watemy,xo zs.v2 z; dxr,l0r 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. What is the weight of bug B?

  Certain insects, such asvhtut /8o ir;psh5 /dguq4 7v6))naep the water 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 bhrvi 6u)h)p7o pa/ ;5t4eu gn/ dq8vtsug 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 ck 5j7ig sk/qdz pjacddxm61n590:9z sm has a mass of 30.0 g. What is i z0gm1a597sns/6qckjd :xi5dzdk pj 9ts density?

  A liquid has a specific gravity of 0.357. Wj4-t,68 )nd9ony b6w se ovgglhat is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the macua/1 jizq3 fz* i t8ky/y:bu*ximum pressurj b/y* 31ayiqcz/ ikuft* :8zue it can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Ex /gsdn)-zd;r ach snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarkwi5 ax,4(pnoine withstand at a depth of 120.0 m in the oc 4wioka,5pxn (ean?

  A circular window of 30 cm diameter in a submarine can withstand a mabwow88vkm 9p t;3 nx9fximum forcekvwnt bfmxw83p9 9;o8 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 if i9 owx +1d,2.uc5vabztdxc) f the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of seo5qs 6e e0;kjoa? (The de ;sq06jeeoko5 nsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure aae t6fg-95 (3ro qntor) 1bgxit a location 15.0 m below the surface of sea? (The denax3o9egbt56ng( f - qor1rti)sity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pistocdk 7 j+vk,8gpn has 8 pv+gcdk ,kj7area $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garage ;ts6*grnxp0blift, the small piston has a radius of 5.0 cm and the large piston has ag6btsprx n*0; radius of 15 cm. What force must 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 25 cm diameter hydraulic piston. v6vc 7m q gk9:*wiuop9 What force needs to be applied to a 5.0 cm diameter piston to accomplish thi9iw vk m76poc9*uvgq:s?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, oj c9cu oe3 xe3g3*xz8lk:l/kand its large piston has a diamu3/eo gl* xcok k833jx9cze:leter 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 and 30 N in water. What is the buoyant j ;rqulx: /y8iforce of the u lyrqj /ix8:;water?

  An object has a voluv n7u0mf.otbuq4zi w+sd4e 1,me of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supportedjexk7/ g om7rzwy4,)n by a string while submerged in water. What is the tension in the string? (The specific gravity of 7w 7,mzgkr e/y)4jx noiron is 7.86.)

  If the density of gold h2jjdl/:i/)kt 4iw jj 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 (b-fi 6ln+ an;mdensity = $7.8 \times 10^3 \; kg/m^{3}$) 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 is imme*9y- hxi tox..kmp5ds*z. wqb rsed in water. What is thepy w.* bxdki .-ht9qxo*z5s.m specific gravity of the object?

  A container of water is placed on a scale, aey(y; g-hxa7kze t; 0bwom*p) nd the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspet;abw*zx) phg(- k;0 meye oy7nded 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 and - aluqyv+x26 rdensity 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 barel nm8f4gc(5sj8 ,syje ry float in water. What 88ncj sf jgr45m yse,(is its mass?

  A rectangular box of negligible ,,ngll ln+vpdw4yhc+6u, nx .9q( x bxmass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogramn+ lh.n( 4v,bxl6luyc,dxx ,+ 9nqwgp s 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 the surface of the l, -sgl; fqold .y9ra(water. The weight of the displaced water is 20. yq,ld-(glrf9;a ols 00 N. What is the weight of the object?

  A solid object floatsi2f9qzgz/roib r;8- f in water with three-fourths of its volume beneath the surface. Whar/9qig;zofrbfi 2- z8t is the object's density?

  A 200-N object floats with three-fourths of its volume bt eudy9c(*qv0iiqsv*4/k7 v jws.rj/ eneath the surface of the water. What is the buoyant fov9usvji t /q7i.sdqjywk0 *4cvr e/*(rce on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thic3 fo4faa - 8pylr798 b4jukmsak. What is the minimum area of the floe that will just support the bear in saltwateralm7aj-8b8ys9 4p4kr 3 oauff 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 the flow rat aox.2g;klkic 1j q,yh ei174he.

  Liquid flows through a 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 2jcuwkcx(. t 6wv 7in1.myt)ocm diameter restriction in the line. What is the velocity x()7c6uc m. w2oktvt .i1jwnyin this restriction?

  Water flows at 12 m/s in a horizontal pipe wi,q3zzltoljv x.n l 591th 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 doey(h( 5necv j-ms it take for a pump to supply a drinking fountain with 300 kPa, if the fountain is 3-n(5 j y(chvem0.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottd:m1 f /dfw+ehn8,ss-7dcpv bom of a water storage tank that holds h- p7dw 8/fnv1cm:sd+,se fbdwater at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizonta2np m+pr(x97wgyg y9ll 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 take to pour *i6f t3rn-zzj 4.0 L of oil through a funnel with a neck 15 cm long and 2.0 cm in dizi 6*fj zntr3-ameter? 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 3ojzt ycy0358gk 7-f,de s,mn vajwj)of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a 3)e,y7kc8m5on a-t zd3 0 wy,jjgfjsvconstant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has -.fd )jaxb; mw-ja)w atwice the diameter of tube B. If water rises 24 cm in tube A, how high wilf. ajw-)a-)bxdw aj m;l it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise ih1b pymr txl*r7b btqq710h93 n a capillary tube of diameter 7bthx p1bbq 0ry13q *r 7h9mtl1.2 mm?

  232

  To what height would water at 0 degree Celec+xdzu (h o7*3x -u4i+ tjdey z:tfw4xv8h5 ysius rise in a glass capillary tube with a diameter oft8d4v+:7e-3x h tzxoyz(ceud4hf *5wy+ j iux
0.50 mm?

  A narrow tube is placed vertically in a pan of wa w/ot-+:tl5,+w*xbavkyjs9+vsbr e yter, and the water 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 liquidw/9at v*5 vywok j x-ltby+++,ressb: column in the tube?

  Consider a rectangular fras2z qvbfegl h/74, vw6+e;np hme of length 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 0.026ep bgh,7l +qhzw 2v/v6e ;fs4n0 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 8/oo/a h,wmo awidth 5 cm, and is built in such a way that one of the longer sides can be moved without bursting the soap film contaah/ m, o/a8owoined 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?