The three common phases of matter jzs/ :g/f( sdoare

  Density is

  Substance A has a densityhirpm60y-zx. 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 o0z7fpvig s pei:u0a f krlv8d9(*c;b5 f pressure?

  Consider three drinking glasses. A.,pu;c3kq dlauqt:; /qr xd1jll three 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 than A. Gq3kdr:q p;xl.,a;jqt1/du uclass 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 ttx*sz8q b2i 71 jb5blthe pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolutqhi3qs7 8-ii ..zotfve pressure at the bottom of .hs-7i3oi tfqz q .8iva pool?

  You are originally 1.0 m beneath the surface of a pool.mqy8(w vab 7 vpryaju+: fcd js-6*e76 If you dive to 2.0 m beneath the surface, what happens to the absolute pre*jvf-js vqca 78bmp reuw6 +:7yy6a(dssure on you?

State Pascal's princ tt:n8ymoynh a 4k,jwy1. 5ml(iple.

State Archimedes' priagi.9h zd js5lwo-1 u(nciple.

  $50 \; cm^{3}$ 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 0bs+yda 4p wl1b. r 8wu fuhpcg+;*fh8into water of constant density, what happens to the buoyant forcp + wd1w*y8 8ulfb 4b sr+uch;ph.a0gfe on it?

  Salt water has greater density than fresh water. A bpfq9w -vgo/5tkw1 1nqt1 )qrvoat floats in both fresh water and in salt water. When)9vpq1qk1ft/ qt1ro 5gv w-wre is the buoyant force greater on the boat?

  Salt water is more dense than fresh o(. 4rlq0cx-xer3by u water. A ship floats in both fresh water and salt water. Compared to the fresh waterl3rxo- .ryq0 4x(buec , the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercw0rn fr,/w c0olzdwl11f h idf0(v ( *jy8y9raury. Where is the buoyant forya 8wj(dzl f11co,dhr09*0/r0 r vyniff (wlwce on the ball greater?

  A 10-kg piece of aluminum sits att-3b(a gj sf0r(ecm;y the bottom of a lake, right next to a 10-kg piece of r;g(3fb- cye(0atms j lead. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a batsh )z 8n kvaebvi7y+/3htub. If the iron is removed from the wood, what happens e7 3k8hais)+vnzyv b/ to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of d a(tgx) npm,-wood sits on top of the first piece, and does not touch the water. If xm)( tadp-,ngthe 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 5 ctwqa +tpwn kyc*a- h4:xq r6b33o7uthan at y4oqcq* - hr+kw:cpx5taat 37uwb63 npoint A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe widensz( t6adw2siu0;a w 0/nb:es tw to twice its original radius, what is the flow speed in the wider section?w:6sab/ (ait0 zsutnww;d2 e0

  An ideal fluid flows at 12 m/s in a horizontal k0wb 5t2v;gm dpipe. If the pipe narrows to half its original radius, what is the flow speed in the na5;2bgvtmd 0 kwrrower section?

State Bernoulli's princip/6 sgoe 3b ev27c:bqvyle.

  Which one of the following is as,,)7rj c n0grc6msy sfsociated with the law of conservation of energy in fluidyrm)s7sc0 ,g fc nrj,6s?

  As the speed of a moving fluid increases, twq 3gym8;s;ojhe pressure in the fluid

  Water flows through a pipe. The diameter of the hayv+mkaoyx, ,ms (/ ;k3uinnl,:-/ asal5 xp pipe at point B is larger than at point A. Where is the water presapyuon5;a v/mxi3ay lh/,m,,sk:sn -(k x a+ lsure greatest?

  When you blow some air above a paper strip, the paper rises. This is3tq8py amo;n3wz) 4sh because

  A sky diver falls through the air iisk1h 8x1l p yo0f r9rcfd:e:2*3wf qat terminal velocity. The force of air resistanfi1f*e 3sylr8 d 9ik :cop012r h:qxfwce on him is

  Two Styrofoam balls, of radii R and 2Rq:p:. 5rjj 1wzwehu 0.r0c k j2t1o7 ted(kgbq, are released simultaneously from a tall tower. Which will reach the ground fib (u rkjzqowcepw12tg :1d5 7t q:.0j jh0.rkerst?

  When a small spherical rock of rad/higl.p m1 8sdius r falls through water, it experiences a drag ghd p.ms1/ li8force $F=arv$, 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 pipex30y fx gr+yj-mxe1o5? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change ix 3fx10-yr xe+5y mgjon the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diameter of p czq9t* r 5j pxhp;;fgj.m9,qlipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths o,q.ql;jtzm ; p9cjrpgf*95hx f 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 alml0m r-sax7l -x/7b rs pipe A. Water undergoes viscous flow in 7l-x7a/mlrx-0 m bslrboth 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 flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to be asn7ubo1j s ob0en.m 3n. f6i4gjsociated with oil spreading out all over the surfaceb1jo6sob0n m.guj3nf.i4n 7e 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 height ;mnud(z:,agto8ass 0 a+i d. 5j ludmag7*me*h. If the diameter were half as great, how high would the wateratsd5mud mglgsjazua( .*am8din7 ;o0e, *+: rise?

  Certain insects, such as the z ed: 5-tqti5hbs4- -dbk*diawater bug, are sufficiently lightweight that they can run on top of water without k:a--id bt tb*d5h 5i-4zs qedbreaking 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 water bug, are suffici 8jwgs4l l8 olsh+ n1lxe7ta.(ently 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 tan1lo ws hel48slg+x .87 lt(jhat 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 maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm k4bweeva -he*2 0p tp5x 4.00 cm has a mass of 30.0 g. What wpeb52pe-4 0ekvt h* ais its density?

  A liquid has a specific gravity of 0.3571vrm,ozad4fy / 6rs7u. What is its density?

  A brick weighs 50.0 N, and measuren2,soqus, w+ ws 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exertw u,nwqs s+,o2 on a horizontal surface?

  A person weighing 900 N 7dbbmbbml e5fi7g556 is standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute)hb edai3e*l (t/hf 1za7q* rt* must a submarine withstand at a depth of 120.0 m in the ocean*i a* f leth/7*zhqa edtbr1(3?

  A circular window of 30 cm diameter in a submarine can withstand a maximu7q q ,au1xbf- )9xxykxm force xx u,fab 19kx-)qx7qy 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 the absolute prgfp)j,wpgc/ 2 essure is 300 kPa?

  What is the gauge pressure at a loc rgx yq dst+:i69,dpf.ation 15.0 m below the surface of sea? (The density r6d,i:ts9 p xg+ d.fyqof seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below ther t,+kdhkj49w l9f 2em surface of sea? (The density of lw f+ kjth m94k92re,dseawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. Theza7wisft7 co8 xg,4v; small piston has area gxs47at,zv c7; io8fw $2.0 \; cm^{2}$. 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 the larg ad8ur8izmn 8zg6qyp+jl6g (.e piston has a radius of 15 cm. What force must be applied on the small piston in order to lift a car weighing 2d nmrla8y+8z6 6p8gi g(.u zqj0,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm dia ; frblb4tbdg7 6lv;c;meter hydraulic piston. What force needs to be applied to a 5.0 cm diameter pitbfc 6 7l;v;b4r ;dlgbston to accomplish this?

  The small piston of a hydraulic lift has ) 8(qgbct)7n nivn8lo j)px+ca diameter of 8.0 cm, and its large piston hav nt+i8lcqcnjb)x)n8)p(o7 gs a diameter 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 ai2)ahq4fch 4bv r and 30 N in water. What is the buoyant force ofv)q c haf42bh4 the water?

  An object has a volume x vwdq no2pq*h795 +:j2bvpbdof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid j-:*ic: i4n-;ygn 1k ypekjj0/fwq kiiron is supported by a string while submerged in water. What is the tension in the string? (The specific gravity of iron isfj4: *nigijj / cpey-kk-ky1 i0w;n:q 7.86.)

  If the density of gold ixzdxx+ t u8 w2u+1l/mys $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submar 7 ydgx nw,-q;*q/m.a;:3nyea+ftz: x ezwhd bine (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 when it is 4a-7d( 5 g ueap(3uszn*yz*irhqy*qh in air and 6.86 N when it is immersed in water.7 ruqa *z3z udi4(( psh*g5hay-*nqye What is the specific gravity of the object?

  A container of water is placed on a scale, and the scale rea.aukz18q5so:gn3kk hk.d i)u im0i r 2ds 120 g. Now a 20-g piece of copper (specific gravity =guk.o .a3zui15ik0ikkn 2r 8 :qhs)md 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 1.0odhqahe8 o66 , n.vf8x 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 q9mm/ ms;) ojklength 12 cm and diameter 2.0 cm will just barely float in ko/9mqmjsm); water. What is its mass?

  A rectangular box of negligible mass 3 cnzge/u :6,9 nyaatpmeasures 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 it sinks in,t:anpzcu 9y/a3 n6eg 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 water. The zo cs(-la96.:zweu hz weight of the displaced water is 2000 N. What is the weight of czohu69w(sez- :z.a lthe object?

  A solid object floats in water with three-fourths of its volume xv7vv:ij+:bsu3tv2 g .vo/phbeneath the surface. What is the object's densv./ iv:g2xs bhov3p: tv ju+7vity?

  A 200-N object floats with three-fourths of its volume beneath the surface :d79e)c0 ;to jrcxjgn e(oj1s 7btzv-of the water. What is tt x -(;se7jv :nb og jtjcoz97de)01crhe buoyant force on the object?

  A polar bear of mass 200 kg stands on an(rsl2f cro/tn8(+ 8e ln x)ktn ice floe 100 cm thick. What is the minimum area of the floe that will just support the bef(tsl2o/ r xc) 8k+nern (l8tnar in saltwater 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. Fi i crv4)ugdxq-qr 3)imi.ydk7 l p,5*od2hz ,knd the flow rate.

  Liquid flows through a vgsuc0n924)qu x iio19f oe5m 4.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restrictnu cv smx1fe02)9 uiq5o4iog 9ion in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal :yt; e4pe50m kb x+m ic.e5w19 q3z:c ywaukbkpipe 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 supply a drinking fountain 2 3ycm57eay ujg 4ueno,ht+6i8kq w lc6e6l2rwith 300 kPa, if the fount8m4i2,c yk76nathu6 gq leoly5w2 6+urc jee3ain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water6 tzm,(pjgj n. storage tank that holds water at a.ngt(j, j 6zpm depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontsv(7wk 6a gtwx / m8n;no8ijl9al 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 +ae uhl/h1ovm- ruh2 9it take to pour 4.0 L of oil through a funnv -+/mhlahre 2u1o hu9el 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 anwy;6/dv qjm, t5hf ,y evaw0i) artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood fl5w) i h,qt/vedvjw0y,af6 y ;mow?

  Two narrow tubes are placed in a pan of wat 2bs*hmmn2 pfd/l)4x2xy r,kqer. Tube A has twice the diameter of tube B. If water rises 2 2 ,/ sn4rm fxpl*x)b2qd2khmy4 cm in tube A, how high will it rise in tube B?

  The surface tension of wa6i9hq nr- 7yshter is 0.073 N/m. How high will water rise in a capillary tube of diameter 1h6nh 7isq yr9-.2 mm?

  232

  To what height would water at 0 degree9g y)u3d uspm+ Celsius rise in a glass capillary tube with a diameter of9 u dg3yp+us)m
0.50 mm?

  A narrow tube is placed verticalri9h+r/ ww+ umly in a pan of water, 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 b+9hwuiw/ mr+ry 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 soap o6 7fh iz-fx8- 9 ayutgtewx3+film formed 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 thx8ho-iu3 f79+zyx6w ftt ag-ee 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and is buil ,4patel er7wo(, v;twt 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 sur;(rvwpltow7e t,, 4 eaface tension 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?