The three common phases of matter arej0+ dfqw fvw7ig1;z rx8 did5:/p0gwz

  Density is

  Substance A has a density i hesmn pw-5(e*vro(. 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 q n li4.ab3d+ms/w8o- ps. );b lzjhwvnot a unit of pressure?

  Consider three drinking glasses. All three have the same area bs*ew z uyfn7+5*vflyou, :n 5dase, 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, and so holds less water than A. Which glass h*d*ulv+ow y5 yf:fnne5u7 z, sas the greatest liquid pressure at the bottom?

  What is the difference betweenpy8i8sq9 8hnojkw ci, (x5 ,fb the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absoldg jv o3+i;n3eikdpe;3 x09wzute pressure at the 9x3k0gj3id p; o e;+vednw3zi bottom of a pool?

  You are originally 1.0 m beneath the surface of a pool. If yojwk)dts 93c, )cg9l geu dive to 2.0 m beneath thejdge9 )g9)wkt,c c3 ls surface, what happens to the absolute pressure on you?

State Pascal's principle.,rziw95mmy /gzqal3 80b eut,

State Archimedes' prij jfb;rs9n )s2nciple.

  $50 \; cm^{3}$ 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 constavvwfn4jw3,fme0u0zl3dq 0wa d el47 /nt density, what happens to 0dv3uw4 7evlaz,00 j nldw4wqmfe/3f the buoyant force on it?

  Salt water has greater yr 8n q8erm.dx/5d6f6x*bjdddensity than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater on the boajyxe d6dqnddb/6xf5 r8.r *8mt?

  Salt water is more dense than fresh water. A ship floats in boh xiu 2.v3cnkj6u+fl f6t ;mw4th fresh water and salt water. Compared to the fresh water, the volume of water displacek lu6 ncf+46mwijt2vhu .fx;3d in the salt water is

  A steel ball sinks in water but floats in a pool of mercury.lmr/3z4q d/ qvlz(b ;b Where is the buoyant force on the ball greater?qdm3r(/4 ;l/zq bv zbl

  A 10-kg piece of alu 2afja*(op6vw minum sits at the bottom of a lake, right next to a 10-kg piece of lea(a2o6 fj* wpvad. Which has the greater buoyant force on it?

  A piece of iron rests on top of a piece of woodl*7am -gq(r ifpc9j q*8c tw)i floating in a bathtub. If the iron is removed from the wood, what happens to the wapcrt *) q( 9-gf8m7wiqi*ljac ter level in the tub?

  A piece of wood is floating in ad /vjzozu/:agzm c*45e1n0 do1j g *ak bathtub. A second piece of wood sits on top of/*an0ag 511m:ov 4/u zo jedc jkgd*zz the first 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 ol o,b-; m:nsz p1k 443:nx0jtexcb wpbf the pipe at point B is larger than at point A. Where is the speed of the wam1tn:-ex b j;lc w4pb 3,ox4: sn0kpbzter greater?

  An ideal fluid flows at 12 m/s in a horizontafzzxlr93r3t e4 , n,vml pipe. If the pipe widens to twice its original radius,xtm,,f4 z 3 zn3err9vl what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If d.hkw ax3e ::c-z;dj fthe pipe narrows to half its original radius, what is the flhd:e3dkcj-zx a;:wf .ow speed in the narrower section?

State Bernoulli's principy* jweim7me2sktd(,.2 u8cke le.

  Which one of the following is associatek/:4 jv5kct70qnes+ 0qf x dwjd with the law of conservation of energy in flutsek0fwj0 :j x v+ 47n5ckd/qqids?

  As the speed of a moving fluid increases, the pressure7 tu 1yanu6(xbso p98j in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is la)avmz;nrw7tin6*u *le3a7 ikk.d1x ls v hw8,rger than at point A. Where is the water pressure greatest sk *;l8vxde3)him i7ra6kwnuw .7 z,l*nta1 v?

  When you blow some air above a paper str t f*kuigjm n.,.dus12ip, the paper rises. This is because

  A sky diver falls through the air at terminal ntqtdb z84s 6gx,d k-i+5vbq1velocity. The force of air resistance on him idbv4x- z n+id8b,tqgk ts156qs

  Two Styrofoam balls, of radii R and 2R, are released simultaneoujjc)9*w3sal *z8zyvfbgh(0x xb1 v5ddc k) 8q sly from a tall j)958*x38qvjv ks0db cc)1zadf zg xywh(*bl tower. Which will reach the ground first?

  When a small spherical rock of radius r falls through watx:et;vmhwv9/rqrgno 6 j88l 8er, it experiences a dral89: 8r/v6jxrn ;gmqe tohv8 wg 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 flui8h 8uuiss ; m).;nd3:n5v8vqus 3x0gh jiz eoid through a narrow pipe? That is, if you made a 10% change in eacn8 0i3duvi;vmx isuo8hzheqj5nu s g. ;3)s:8h of the quantities below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are thc*j e4d3 46m5sbs jrwze same length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across tbz s43jrcswm65dej* 4 he 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 diamete.ora)(digfn1lr, 4 cqr, but 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 flow rate in pipe A?ld) gin(r ,r cqo.f4a1

  When soup gets cold, it often tastes -bpxv.j - 6ci*epewua0 n)t 7cgreasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in lit6ae-7j .vnx 0wu-cibc p)*etptle globules. To us "physikers", this is readily explained in terms of

  When a tube of diameter qwg3p czs78y 8o 6ewf5 fbs(6kd is placed in water, the water rises to a height h. If the diameter were half as great, how high would the wat 5c3esbz8(yp6 fof wq68gkw7ser rise?

  Certain insects, such as the water bug, are sufficiently lightweight that tlb;va+95zoji hey can run on top of water without breaking the surface tension. Water ai 5 9zojvlb;+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 tht5r4 c8 pmxo8ze water bug, are sufficiently lightweight that they can run on top of water x5t4pco 88z mrwithout 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 is twice as long, twice as wide, etc. What is the maximum upward force on the feet of bug B?

  A plastic block of dimv 1n sxotv3qu1bud(srua-45 .ensions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is its densitdvn-t.v(oq 1ssuu 3xru 1b 4a5y?

  A liquid has a specific gravity of 0.35d8( /twypw )by,(b erk7. What is its density?

  A brick weighs 50.0 N, and measure4thb5 k -*b o(47q8owacdpmzns 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure 4z7d*o 8o4-cabh ( 5npwmqt bkit can exert on a horizontal surface?

  A person weighing 900 N is standing on snowshoes. Each snows *tlcfsh,6 8rjhoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must )ce76t7rh pyl m*rh)aa submarine withstand at a depth of 120.0 m in the ocear* 76hatpc re)h)m7lyn?

  A circular window of 30 cm diameter in a submariw/6nmkzw8r l 3ne can withstand a maximum force o8 wrm6kw lz/3nf $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pres5, : dnxr:aryqsure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of stg/pky4 d y (*-nkx fn4)zc7hxea? (The density of sn4xcyynkkzp/ 4*fg7 t-xd)h(eawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of 2kns g a/3ft+ g96siggsea? (The density of seawa9/t gg +fsaigk3gs26n ter is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a4p2eo zkm7lgmj p;8g+ hydraulic machine. The small piston ;egjk l2+zg m78m 4ppohas 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 ro84(pwbwjg9x 0*uoo y adius 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 the large pistou yw*w opb(o4gx o098jn?

  A 13,000 N vehicle is to be lifted by a 25 c2ef cslingw,hlq7 . 5g2lx 06om diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplisgl5wie q2o0sch,xflg2 n l76. h this?

  The small piston of a hydrav0 uu5a np;fr9m x7yblud/y 2/ulic lift has a diameter of 8.0 cm, and its large piston drbmx/v0;uy27f ln/ a5u pu9yhas 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 400wc6ubqn5 z5 (d xbc9j,1 pcuojigo2f)a6c)c N in air and 30 N in water. What is the buoyant force of the watec ,2zjo ) ( accc6 qduwcubp91gi jfb6nx)5o50r?

  An object has a volume oq)7fby z9iq) sf $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a stringx 7w+g z(2sn)k/v9uk6 :gywpd ()ghwe-hzkm y while submerged in water. What is the tension in the string? (Tg:kk-ymh )2nz6sw+/ dexz( wwgk(h7) y vgu9 phe specific gravity of iron is 7.86.)

  If the density of golvpph9lhr:/6qi6xi58d shwx ya3. s 1md 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 steennbkq /gu(+ 2ncfjj(: l submarine (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 i51.z4fbi rb7g tggvc 0t is in air and 6.86 N when it is immersed in water. Whgzb0gt17b .4 cv5rg fiat is the specific gravity of the object?

  A container of water is placed:tqy3hv v5;v n:(zbrx on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the wavx;3yt:b(v r :vnzqh 5ter, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a mass ozr imv*:jd v12 1n;svcf 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 of8 cdizl.v6y9:hmn( xrqj t0*r length 12 cm and diameter 2.0 cm will just barely float in water. What is its mass*z9tl.m j8y(qhrcr:xi0v dn6 ?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m widv 24br7cocxc 1g8vd8xt3y 4y*gs ,bhr e, and 0.50 m high. How many kilograms of mass can xgx v3c4s,b hd84y7ro btr 28yc1 *cgvbe 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 thebdh d0n2(qfvpf h813h8g 5ksl surface of the water. The weight of the displaced water is 2000 N. 5f38npv8bl dhh1 gkfd(hqs 2 0What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the s5s+fiv5j33atk y i )bgurface. What is bg5 v5y3aiij)+k3 sftthe object's density?

  A 200-N object floats with thro.0m;8i41tde hd6u7 xtmp6zqa s6 q pxee-fourths of its volume beneath the surface of the water. What is the buoyant force on the objecztd6md xp6a 0p 417hui.8tqx;m se6 qot?

  A polar bear of mass 200 kg stands on an it9r y1oithu 6jx7b7 o(ce floe 100 cm thick. What is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The (y9 ot7r ix1bout 7h6jspecific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the f mess.d 23n/3ftq4:*:q j fbae*oi abxlow rate.

  Liquid flows through a 4.0 cm diameter p+ou+ppx 4ww)s xv)z d;ipe at 1.0 m/s. There is a 2.0 cm diameter restvx+);p)w o+sdw 4zx upriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe with a pressurbr9y;s(fmf 9b e 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 dr 7hrr3)txs /tj 1mtom6inking fountain with 300 kPa, if the fountain is 30.0 m abo1r tmj3r 6mht)s/o 7xtve the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage te ,,i5mdj*i521 jglvo m7kkspv(ure4 ank that holds water at a depth5kpjl5gi vm,kvi( jdrs1 *24u, ee7mo of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of icr8 ntzd l7v31c05grcross-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 4.0r umfd 4v9wl*uuq9 32 e()dy-lhu8mac L of oil through a funnel with a neck 15 cm long and 2.0 cm in diameter? Assume the surface of the oil is kept 6 cm above the tcf9r uul y4 l2a98uwmqmv-hd (u*3ed)op 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 ai a h7s9qf4(qo r3xj*on 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 flowa3oqr sh(*9q ofx4ji 7?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diamett sm1 ar;nb* 1psrd5p2er of tube B. If water rises 24 cm in tube ;n b1 s2*ps1ma pd5rtrA, how high will it rise in tube B?

  The surface tension of wate4 ydl4)l e-kfor is 0.073 N/m. How high will water rise in a capillary tube of diame)k-yde 4l4lo fter 1.2 mm?

  232

  To what height wouldya:w ijm1p91m :m1ot5h vedu : water at 0 degree Celsius rise in a glass capillary tube with m1t j:1m od:9 aevwh1impuy:5a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in 3p+soos5: 8uersps-zjik (l9the tube to 4.0 cm above the leve:up+ie9oo-pssljs3 5(k z8sr l 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 widthso +iy pdmleh9m v,)gyrf-x4 uh6m/9) 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 exe m/mrdfe94xpm +iy6h u9ls-, g)oyvh )rt on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and is bgur)zdjw q4+78e9el mfup: 7g uilt 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 surfa 9u+ eg874:7qrd)gzful mpw ejce tension 0.026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?