The three common phases or 94 ulxoufo)71e+ny1v,dtcaf matter are

  Density is

  Substance A has a density of2u2ks.+am( d uepe4dj. +xqfd $3.0 \; g/cm^{3}$ 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 7x/ael1f2s+x/3.9uf h ex gvr7 gbu zzof pressure?

  Consider three drinking glas5-erleynm./0u f 5 i7jm,akm oses. All three have the same area base, and all three are filled to the same depth with water. Gjyim 7,5mlrk n-uf5 e/mo0ea.lass 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 + l(*kvwd/vem 3haee6pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at4 -a95rayf pcq the botto9fq acry5 p-a4m of a pool?

  You are originally 1.0 m beneath the uj i)6*udhjh6 surface of a pool. If you dive to 2.0 m beneath the surface, what hah66i*)uh udj jppens to the absolute pressure on you?

State Pascal's principlan dwya;e 0nn3-2 w7gve.

State Archimedes' prol; w)unip(2l ais3 p:inciple.

  $50 \; cm^{3}$ 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 h5gnp s9x ih-,constant density, what happens to the bus hx gh95-ni,poyant force on it?

  Salt water has greater density than fresh water. A boay8w2r-f atg syb)j 3j4t floats in both fresh water a tjw afr )bsgyj4-38y2nd in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dense than fresh water. A ship flod if.i1a7vp72e*cczfats in both fresh water and sal7dci ip12fzf.av e 7c*t 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 pool of mercury. Where is the buoyax/r fj )au0/( cdmki o,3*pnjynt f*r 3k 0jmcfx(yp /i ,udoa)nj/orce on the ball greater?

  A 10-kg piece of aluminum sits at the bl ,04axvgjic,*+qxujbz . s ) vhtxs0,ottom of a lake, right next to a 10-kg piece of lead. Which has the greater bu 0iv xcq ,t4s, u0jxsxg.jzba*,l)+vhoyant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If ty:9coz8m sdv 3 yrv fjn241nps71fh;ihe iron is removed from the wood, what happens to the water level in the tu:j8n2y9vf rs1s f nzp1vcdyo 73m4;i hb?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top .t(pifgyz (h: of the first piece, and does not touch the water. If the top piece is taken off and placed in the water, wh(pi(t fhg:z .yat happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pipe at point B is-)2,f57fa ezl j ygkfx,ngsc8 gtgg*, larger than at point A. Where is the speed of the wa 5g-,sce,g jzf)nf lgt y 2gkx,7ag*8fter greater?

  An ideal fluid flows at 12 m/s in a horizoe;56jgop 5u ul z+u4uuntal pipe. If the pipe widens to twice its orig ue5 g+p4ulz;6uouu 5jinal radius, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe na+gl:4g lkmhke :kicw09or3p1ba d e:- rrows to half its original h i:emrkl1glw:ge ap39 4 kb0+:c-dkoradius, what is the flow speed in the narrower section?

State Bernoulli's princim:n0u w etrf:w :vbh.8ple.

  Which one of the following is associated with the law of conservation oqp,7 tjq3i2mbbik:(s f energy iq mp:ib kb,q3ti(s 27jn fluids?

  As the speed of a moving fluid increases, the q5z m7(l smx8,e9snlxpcha80pressure in the fluid

  Water flows through a pipe;dp2qby9. y a8bjb-nrbe96 fds0y+ ks. The diameter of the pipe at point B is larger than at point A. Where is the water pressur b-aypyejn9k+q6rds0s bf . ;d8by9 b2e greatest?

  When you blow some air above a paper strip, the paper rises. This is becausouqx6) ;ep4 r6dfjzr 0e

  A sky diver falls through the air at termihp jg(arwpzhu, 5-m pt(+3 pt/nal velocity. The force of air resistance on hir z+tup3gwhjpht am( - pp/,5(m is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from yk2y;bn 9kp2ej+4; -,j mftbfqr q 9ba7kl qu8a tall tower. Which will reachpa2bq 2 f9k ;kl7+4jrfqk y,; j9by 8temu-nqb the ground first?

  When a small spherical rock of radius r falls t/, :uoeft7.hd mwdx hg7d3m85;hloh dhrough water, it experiences a drdd tl o5h7mxh8fe7.gd3wmo hu ;/,d h:ag 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 aafm9vv: p2, x/cmok* flow of fluid through a narrow pipe? That is, if you made a 10% ch:x9cfv,*2kv opmm /aa ange in 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 twicew l7 gxc 7z-i;4sf+rhk the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure differzgf;k7-4 hirws 7 +xlcence 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 diam ddrjxi+ zh7qnt5(4e) eter, 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 t(+ednjzdhir x7 q45)B is Q, what is the flow rate in pipe A?

  When soup gets cold, it ozrd+. u3isr ;pften tastes greasy. This "greasy" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little globules. To us "physikers", this is readily explainzrsi +r;upd.3 ed in terms of

  When a tube of diamete 9 1la fj)5soh7.zukcpr d is placed in water, the water rises to a height h. If the diameter were half a.uszkc1l9hfp57 )ajo s great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweighs 3x5o9,qd;eup) +qqr z*l ukmt 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 Aqdu)qz lr,q9 puk+sx5 3oe;m*, in all dimensions. That is, bug B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such7 7 hq96a.ltznz,czqr as 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 thatrz z,z 7n6qc.a7l9tqh 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 l.; (xx(uq8k jnasv2j p /us0zcm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is ixqsk v(su8jp0ljz2.( /n a;ux ts density?

  A liquid has a specific gravity of 0.35neno ko:- x*j:6uou 8n7. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cmxiab:-./3 a6e*caij eict j ac-5vfb/. What is the maximum pressure it can exert on a horizontal surfax-ac6 /iae3bj itije5bc.-v/ac*f : ace?

  A person weighing 900 N ibf t*ollz 9h63 m9*ycx.a+h fps standing 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 dsuj*c68nbi (xf+ c+w8 mcu;auepth of 120.0 m in theu6 cmf u 8xbu*s8wc(n++ ij;ac ocean?

  A circular window of 30 cm diameter in a gqa p- ed6sn(uf(*d+x submarine can withstand a maximum force ofsgd6pfe-*dna q(x( u + $5.20 \times 10^{5} \; N$. 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 pressure is 300h+clv: lxps*: )gl g6q kPa?

  What is the gauge pressure at a location 15.0 m below thesu ph2em92k4+d.kpev al +td- surface of sea? (The d+p. k t9hkvdp 4ueed-a2l+ ms2ensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a locati md(8)3l w 9rhwn;jwvfon 15.0 m below the surface of sea? (The density of seawater is mv83 n 9wdwhf(lrw);j$1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small p)x.y d e /o;h-lzt, ,n 92uikz*nslc*obqdrv2iston of a hydraulic machine. The small piston ha c q/;x9bzdrs.t lo o,ieyun-nzhk* ,2)v2l *ds 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 liarr6sscx 7n-u9xb-( f 7o.kn,i e9zocw)p nm/ ft, the small piston has a radius 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 weighingrce-rk9.wp 9o- a(x fnsnn)/ cuib67zom ,7s x 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm )w hl .s-5nvnh5u jul4xkz1r 3diameter hydraulic piston. What force needs to hz j hlsn5 5)x4l3wrn-v.kuu1be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hynxoq0zyckm /st7 z(*8g3 b+yb draulic lift has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The li8+ (n/o3byzg 7*c mbt 0zksqxyft 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 qm9rj6m06z vn water. What is the buoyant force of the wate 6q0 v69mrjmznr?

  An object has a volulxy0x:ssv../q.6c*o k n nmua 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 suppc6)uy+ rzu 3yxorted by a string while submerged in water. What is 6ryx 3+zuc)yu the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold if ,e6fcj7:ovov u) kar+- 1yfns $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subm;-us ub( paz8tk h4md3arine (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 0sw;;wfy.oj+ a/no wpN when it is in air and 6.86 N when it is immersed in water. What is the specific gras+fy/w; onaw; w.j 0povity of the object?

  A container of water is pla o- ;kg2tvhi5 t39kbt4 xptb8vced on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from 2g vbvktx3ti4phb;9tk5 - o8t 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 density of ;1 -g+oe:e/imhggr nemytl8uf-apjl: y r-52$2700 \; kg/m^{3}$ 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 barely f)xljp2ipgf bqtj;ro260 9s d3 loat in water. What is i j9los )j62 g t32;pqpbdrfxi0ts mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide q+fz5yq b21 0ziud6ks, and 0.50 m high. How many kilograms of mas dbz1zqi6 250uk+qfyss 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 bev z /gsqxr2p: q 9/ac k+aw,8yn8mzwk8neath the surface of the water. The weight of the displaced water is 2000 N. What is the weighx/,w/qv8zkscg p:wz9qra ay m 82 kn+8t of the object?

  A solid object floats in water with three-fourths of its2 /yy*i 0d5f yttndlo5 j0f:v 4tmtw9fh:j: us volume beneath the surface. What 94 fvfj5u:5h n2w yidtt/ jf:0:y*ld 0tys omtis the object's density?

  A 200-N object floats with three-fourths of itxk rp-f-/l* ifs volume beneath the surface of the water. Whatx/i p-*k-lfrf is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. W)wsech1 ouqbr1 389m dhat is the minimum area of the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gr)3 wmrh c11u bo8d9esqavity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.01gs3ot 9e7p(tnm0lh noxq8m : m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe k adt+.c v anpo2u-(rswh.g82 at 1.0 m/s. There is a 2.0 cm diameter ukh8c2ao+ps2w -tav g.d .r(n restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wi. bwawao pt:3 )0ykw z0oze/b/th 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 w di-p)7h3j7affz rn85 u4 nxnh4i*jntake for a pump to supply a drinking fountain with 300 kPajnd4fzi*hpa78xjw-fu in nn35 ) h4r7 , if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water storage tank9i 2qrt0msp(c that holds watc s9(2p0 iqmtrer at a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horiz s0ttjhw9n0m sn6*pj7+pce;/ wecq7tontal 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 powrb( nq-y8uy- ur 4.0 L of oil through a funnel with a ywb -8 y(-nqruneck 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 an a ar/6+/mv je obe d2z9za/w4cdrtery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintaina z6ca be/ed/ 2/vr jmzdw9+4o a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has tw9b.7ftdxa /i7;dr jji.1hnqbt4 vnm;ice the diameter of tube B. If water rises 24 cm in tubeh1n .b7qt.tai;7j; b v j9fd4/xidmr n A, how high will it rise in tube B?

  The surface tension of wat8kxx9g(l 5w 3y (6)aik una4 v)morxxber is 0.073 N/m. How high will water rise in a capillary tube of dia94a aunx6i w)y5xkr (l3x gx omkb)(v8meter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillary tube wi4hee x(wmu 7zn*6u: gsth * m6s 7xngw(: zu4hueea diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of wat/zggcieln; . vls946 ser, 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. W6/ inslcs.v4; z9elg ghat happens to the height of the liquid column in the tube?

  Consider a rectangular frame of lengbqnao -r i 4e:qq6y.a6th 0.120 m and width 0.600 m with a soap film formed within its confined area. If the surface teey: 4aib 6n6oq-qra. qnsion 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 width 5 cj5 :a 2zimeo9jm, and is built in such a way that one of the longer sides can be moved without bursting the9me:2j jioa z5 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?