The three common phases of mattf ;onoh)j ;6bs8uenr8er are

  Density is

  Substance A has a densi9 c+j)ge xy awmt64s:qty 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 ofapxn- i+u f;y+g3tiw qmdk5 my.c: .i2 pressure?

  Consider three drinking glasses. All three have the same area ba: .bwm+ 2 1b3monywjayse, and all three are filled to the same depth with water. Gla:owm2y3 +m bby aw1.jnss 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( tqqp5is;w:iressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the abso8 nus;+jf3 vj dm4uo,a8;emzmlute pressure at the bottom +m84 ,usz8 ;mfvau ;dmoje3nj of a pool?

  You are originally 1.0 m 9p 9+vcndq oio o- 7ms;cdsu.(0z7 7suvbev9 bbeneath the surface of a pool. If you dive to 2.0 m beneath the surface, whazo9uss. +c9vd07sm dve uib-7nbovqo( 7c;p9t happens to the absolute pressure on you?

State Pascal's princip ica5.asn78u j y-3jyzm+dqu,le.

State Archimedes' principlee rts7rce- 9a f:zyr3l 7yh bx48)9cos.

  $50 \; cm^{3}$ 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 d*:fon 7xc /dpcv:v) bgdjg)j.1lo )g teeper into water of constant density, what happens to the bd):x c )b d.pg*j)fv1:lg7nocvog/jtuoyant force on it?

  Salt water has greater density than fresh water. A boat floats in both f. n: kx()ypjubinl6c6 resh water and in salt water. nlu. 6y 6(cbikjxn:)pWhere is the buoyant force greater on the boat?

  Salt water is more dense th(: cn4s0grin57 qzdoian fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the salt watedzisc ngor:n70i 5q4( r is

  A steel ball sinks in water but floats in a pool of mercury. Wherehdbgbmx* l5 ) 1uk2u;f is the buoya5x b2) bludfh1 *;kugmnt force on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-(sqp9s2yur4df( v v ot )h;.xdkg piece of lead. Which has the greater buoyant force on s).v d;(qyuds (p9f t or4h2xvit?

  A piece of iron rests on top of a piece of wood floa5 tg7)o rtdzy4ting in a bathtub. If the iron is removed from the 5d4yt 7gtzo )rwood, what happens to the water level in the tub?

  A piece of wood is floating in a ba5-ez6/i;f rndt1a1z0 u z, fqoze z/jkthtub. A second piece of wood sits on top of the firs,e1/r-d6 qnj eo a;t5fizku z0zf1z/z t piece, and does not touch the water. If 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 atsk ox188. g*s obsbgq: point B is larger than at point A. Where is the speed of t xg .1g8 s*obss8q:obkhe water greater?

  An ideal fluid flows at 12 m/s in a hori yxn z;t891jybtjup3 1zontal pipe. If the pipe widens to twice its original radius, what is the flow speed in the 1;x1nzy 98ju y pj3tbtwider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narrowsb i8ugc,no ul;eqk6/5l8m2 np to half its original radius, whao 8g6l niuu;,85l2cpkqm/bn e t is the flow speed in the narrower section?

State Bernoulli's pri(-bp4/h(5fekv 24(ihi syet vfjth, vnciple.

  Which one of the following is associ+/e y sjzo*eppr6938 )g ngeiyated with the law of conservation of energy in flyin36*9z+ /esjy r )oeepg 8gpuids?

  As the speed of a moving fluid i7l eb6w+i8xpc ncreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the piy7.p,;6p kmvrf2hbp spe at point B is larger than at point A. ppvh67pr bms;yfk2.,Where is the water pressure greatest?

  When you blow some air above a papem8yip 586tfx+ o,kcktr strip, the paper rises. This is because

  A sky diver falls through the air at terminal velocukkhty4ut q / cw 4j,hy;v0;u3ity. The force of air resistance on4/yh;yu4jk; uhqv, tk w0ctu3 him is

  Two Styrofoam balls, of radii R and f-l*khj9 ( j 3cocynb.2R, are released simultaneously from a tall tower. Which will rea* h (bcfjl9c .-oknjy3ch the ground first?

  When a small spherical rock of radi6k / .mr6dvjn*yaw:vgus r falls through water, it experiences a drag f:vv* r6m .an/yj6 dkwgorce $F=arv$, 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 n11hwv2io9iw3 a86v,uy0lu.bjqiws u arrow pipe? That is, if you made a 10% change 6w0 , vv. 9quiw1y1s hu3wiioab8u2ljin 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 twice the diay5m j52p) r6rf / vz.tiuzdi-hmeter of 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 A is Q, what is t5 f)hu.ymt /ir6 dr-2iz5zvpjhe flow rate in pipe B?

  Two horizontal pipes have the soi* 9oi4ym*t: ysocb )df,:w name diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, sm* bi,oc9*4woost:f :d y n)iyubject 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 oftt /;bae3 g.qk g84vndsen tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the .g84eaqkn 3dvt sg/b ;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 wateo aq wrb8m1n8i*j ;2zbr, the water rises to a height h. If the diameter were half as great, how high iwbbrj8qm1;a o8zn 2* would the water rise?

  Certain insects, such as the water bug, are sufficienth-, m5 b4v azwwz u1mg:rk/tt,ly 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, bug B is twice as long, twice as wide, etc. What is the weight / :w1vmzru k ,-b 54htg,zmawtof bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that k8a. hn::vrz6/vjg awqpbh42they 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 h.nhbv62 8/rv waz pg::qk ja4is 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-eu1tus5 + ths-mf2k n 30.0 g. What is its density?-hksutsn2me1+5 f -tu

  A liquid has a specific gravi-, a 3jscj9oxdty of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 c rand+ +qd)*tjt 2k,fcm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert onank*ft2r,cq+ td)+ dj a horizontal surface?

  A person weighing 900 N is standing wsw t-3oc ;vi otvae :dg45k6-on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 m inp (+.mkl0 3rfaisx(tk the ocat3x +.(r0fis lkm(kpean?

  A circular window of 30 cm diameter inb6mvujgam8 qu4oj05 7 a submarine can withstand a maximum force of a84g 70ouq mb v5uj6mj$5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pressure if39jn9fc ohk 4r the absolute pressure is 300 kPa?

  What is the gauge pres ++urceb4 izeo2kzt 8 w-xn3*nsure at a location 15.0 m below the surface of sea? (The densitykn38-o2ee*trxz4 iz++w ncub of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute presl 3(qt/;8zxgrmewy, (+gucrssure at a location 15.0 m below the surface of sea? (The deq rxy+3(, uze/8g( tws;rlcg mnsity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a a/ggjbi bo(rh92c ooat (+ 38bhydraulic machine. The small pistobboggc 2h/ot+bor( j( a3ia89 n has 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, the small piston has a radius ll.ee4/ z1h xflqw4p5 of 5.0 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 20,000 N on theph.1ex4 le4/5lfzlw q large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. What (zuf9z- 0ya4aiibrq .force needs to be applaur iyb -.fq4a09z(ziied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.zg)n6t u3ah0 5ie,cm i0 cm, and its large pisto)65aeiuni3,0 cz hmgtn has 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 iuiu:a/.fr6;i8 dutz an air and 30 N in water. What is the buoyant force of the i zu a; u/8.frt:du6aiwater?

  An object has a volumh*3: gvxu7jopi5y h1ae 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 supported by a string whi (gx rf7uz2u5z v4np j2w5i6pvle submerged in water. What x4zf nu6p(2v5g 5rpijw7vuz 2is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold isp5n t3 2y5x2lady dmmc.p+ zn* $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density6btnb3h ,1 wht1sm4xb = $7.8 \times 10^3 \; kg/m^{3}$) 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 vu*h .l 5rkh33qbstt-w t6+ iqit is in air and 6.86 N when it is immersed in water. What is the specific gravi.r3-+q s3vuttw5bt qhhi l*6 kty of the object?

  A container of water is placed on a scale, and the scale reads 120 g. N z xn50nyyjq*4ow a 20-g pijz0ny* 4nx5y qece of copper (specific 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 ant034d ikdb 9uu5rxi -xd 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 2.y.5wc ottz9gdc6w e4 .0 cm will just barely float in water. What.tzo6 wd54c y9.gew tc is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, and 8ufy1a 7rlm agq ftg274fdvj jg2 9*4w0.50 m high. How many kilograms of mass can be loaded onto the box before it singl7t y7*4fvjw g4mar2a1qfj8 9gu2df ks 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 water. kig9-3+ota4.s)uyj/;- w mq zmshxmh6l- oe h The weight of the displaced water is 2000 N. What isoyx4a/ )ke9h.h3j +w-u t 6hoilg-mqzmm -ss; the weight of the object?

  A solid object floats in water su ig:j0to;(wiy /if8with three-fourths of its volume beneath the surface. What is the object's densitf0u ijs8/(w;go: tiyi y?

  A 200-N object floats with three-fourths of its volume beneath 0n*-nbwhg+us: s 9ho y3f vy6tthe surface of the water. What is the buoyant force ohs bynng90v3tsof+:* u6 yh -wn the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thrd 8d 1)g3ck-dkxo dwff su(98ick. What is the minimum area of the floe that will just support tdwsdo)f3ud(r kg 8 - x9kcf18dhe bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pigdh*7u*;y 6q q3ksmwxpe of diameter 3.0 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 f .xc :a djvtvxl9ert6 a09cb.ly4 4p/a 2.0 cm diameter restriction in the line. What is the velocity in this redcaxlj/ p6b t v4a0x9 le vyf:r4.c9.tstriction?

  Water flows at 12 m/s in a horizontal pipe with a pressurtk10qm6og*qw42rmk a a /s/are 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 doesvy k3xf50hp(d 2xz z-o it take for a pump to supply a drinking fountain with 300 kPk3x05(op vzxhyz 2f- da, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 um/ :;hn--ysrb +bqoymm occurs in the bottom of a water storage tank that holds water /s b-:bh;r-yn+moquy at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipeh qn,iqe* yqq7)*e;qz 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 o1wiy0j9iq) c 0.20 Pa-s. How long would it take to pour 4.0 L of oil through a funnel with a neck 15 cm longq0o 1iji c9y)w 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*gzs:2pb( z65 ein zez an artery decreased the radius by 10%. By how much wo(sne: 65ipb2*zgzzz e uld the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed i q zp,6pml97wgn a pan of water. Tube A has twice the diameter of tube B. If watqz6mwg,9p 7p ler rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 m b ;igm pae94qb9.(ftN/m. How high will water rise in a capillary tube of diamtq.9g4 b;ef( 9pmib maeter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in aj( r)rf)zd 7jy glass capillary tube with a )() fj7rzjydrdiameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rt;ng6ay mq:4pises 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 oriqgn 4 ;p6yma:tginal value by the addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular frame of lengqv6se1x-8x elth 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 0.0260 N/m, how much force does the soap film exertlx8-6eev1xq s on the 0.600 m side?

  An adjustable rectangularr4,. nvq 1 mzmg9/cz/ /rbzybgxkzr-l;p p 5y2 frame has length 12 cm and width 5 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 lgg1r rmv,;z b/znkzz4yp2bp/c/ry9 5. ml xq-ong side so that the frame is 12 cm square?