The three common phases of matter arehwz-*6(mkp*evpi6y p i hv:q)

  Density is

  Substance A has a densixwj+n4cg (ukx8 g a.)yty 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 predq73 gpc vtdoe)w 3*0xssure?

  Consider three drinkine g6 0w5fejvmjqe 1;s8g glasses. All three have the same area base, and all three are filled to the se1e fs0g;w 5j mj68evqame 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 has the greatest liquid pressure at the bottom?

  What is the difference between the pressures insia*agn)vk6 b 3mblpg (do,gq+ )de and outside a tire called?

  When atmospheric pressure changes 9,acxbbcg*17ug (amg, what happens to the absolute pressure at the bottom (* bmc1uxg a9b,gcg7 aof a pool?

  You are originally 1.0 m beneath the surface of a eshrx0n)8xhw 01)6 rh n tmy1rg/fhz 4pool. If you dive to 2.0 m beneath the surface, what happens to the a sr1y6xth04w rrx1) ehfhz/n8nhgm)0bsolute pressure on you?

State Pascal's princxzn;8):jyamvlgk y3*ld;-5egn eg 8yiple.

State Archimedes' principiz)s.yrogrx x-/ xg ;,le.

  $50 \; cm^{3}$ 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 wm gmul,9i j9 o4xtr+e )uudp45o7ma;-y2 nukd ater of constant density, what happens to the buoyant,pj5kn 2 olo ux+-)rude 4m4yg9uma7m dtu;9 i force on it?

  Salt water has greater density than fresh wat(d-k;vk6c3 atzpwvwp, +y, qixu* /zfer. A boat floats in both fresh water ,i d/k y3(,6t x-zzcf*vqapp kvww+;uand in salt water. Where is the buoyant force greater on the boat?

  Salt water is more dens5-09;/npb-)rwtsryd j wv) rps actg2e than fresh water. A ship floats in both fresh water and salt water. Compared to the fresh water, the volume of water displaced in the )/9vr yctsr0 bswgj25 n;d--pr)watpsalt water is

  A steel ball sinks in water but floats m j)hg)a6/ w o)b/faghin a pool of mercury. Where is the buoya) ho)a gma//gf 6)wbjhnt force on the ball greater?

  A 10-kg piece of aluminum sits mwxr;w* x ,efmrxm)6 2 w; s:;q9yuqgxat the bottom of a lake, right next to a 10-kg piec;w y q ) x s;f*g2:e;6u9mq,mrwxmxrwxe of lead. Which has the greater buoyant force on it?

  A piece of iron rests on tops6-c./tvzf8a mgjr0r of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the wat. /vcjgs tr-fa0mz68 rer level in the tub?

  A piece of wood is floating in a bathtub. A second pii2 w;dtff y02ca8eb 6xece of wood sits on top of the first piece, and does not touch the wate 6ywi;t8 f2b2ax0dfe cr. 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 at point B chb/ 9l47 s n ;o7/.hid duu3xuim:iwfis larger than at pox9b n:w7f /c 7huh4liumid./3;oisd uint A. Where is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe jz 1zspcc;; e9widens to twice iejc;; pz szc19ts original 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 narrows to ha ,g))v +ijjd9hayw2talf its original radiuayhdaj) v+i2tw) 9 gj,s, what is the flow speed in the narrower section?

State Bernoulli's principle.yz r:b-)dc10r:sy eq 8fnf so0

  Which one of the following is associated with e ng4lzu+-;x dthe law of conservation of energy in fluids?e ;4-x+gl uznd

  As the speed of a moving fluid infkb gx8+si 9 +x2y0oiycreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is lare hf:iqy2ilx/ m5-ch+ger than a:5 e-y q/ihxhmflci +2t point A. Where is the water pressure greatest?

  When you blow some air above a paper strip, the paper rises. This is bec c1tny6g 3kos+nh tpkmi4k 8*(ause

  A sky diver falls through the air at terminal velocity. The force /da qbq7fogj( t y81rne)1)lt of air resistance on (rb lo)gq7d1ayq/ 1)8fjtten him is

  Two Styrofoam balls, of radii R and 2R, are released s:g(w toiu og+9imultaneously from a tall tower. Which will reach the grtg9:( gi uo+owound first?

  When a small spherical rock of radius r falls through water, it experiences a dmw80a0a. ezjh84ehg0 p b0sr zrag for0wa08rb0gmze.z hj 0 sa4p eh8ce $F=arv$, 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 )n66, w grajxqz(rt/rz k7)jm flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantitier7)qxw trz(k6/zmj ,rg 6)jans below, which would cause the greatest change in the flow rate?

  Two horizontal pipes are the same length, but pipe B has twice the diameter +q p-3lg (js2 woijw)iof pipe A. Water undergoes viscous flow in both pipes, subject to the same pressu3wjg-i2)spo + l i(wjqre difference 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 diameter, but pipe B is twice as long as pip ldvj,gih a8-4e A. Water undergoes viscous flow in both pipes, subject to the same pressure difference acrossg,8-idva4h jl 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 "greaso82f,wk:gk1oj 0 lowa y" taste seems to be associated with oil spreading out all over the surface of the soup, instead of staying in little glf81wok 2kaw: g oo0,jlobules. To us "physikers", this is readily explained in terms of

  When a tube of diameter d is placed in wate +,fexzzo 4bsd n(v :)7gpit;tr, the water rises to a height h. If the diameter were half as greop:(t +d4;,tvez)sz nfb ix7gat, how high would the water rise?

  Certain insects, such as the water bno8 i(s;v :lckug, are sufficiently 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 of bugoc:i( sn8 vkl; B?

  Certain insects, such as the water bug, arw-9q t- ltdy(pe 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 bug B is twice as btptl -d -(qwy9ig 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 3.00acv 6/n0 hby-th.dnkztl )dh t45s)d5 cm x 4.00 cm has a mass of 30.0 g. Wh5zac)k t4-0 h6ylhd5bn/)n .stdvh dtat is its density?

  A liquid has a specificf s0a 6r9wve-h gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm ux nvu:- f3h5e)ez(pr x 4.00 cm. What is the maximum pressure it can exert on a horizontal h:u-z5x(ufn) e3eprvsurface?

  A person weighing 900 N oxk*fbga:7ydc6 qw97 is standing on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine wi*d1:8(2 , ef rqzjallvjglq7nthstand at a depth of 120.0 m in the ocean1 e*zr: n7a j2 gf(ljq8ldvql,?

  A circular window of 30 cm diameter in a submarine can withsta;.:s*zhgm,rf i 2 :4fdvmsx*o)otagw nd a maximum force ofm)h* :gs:. wzia4,m o;xtsfodr* v 2gf $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge press,e0 2(o l9vemzs tt93cnqy9p.d 9 gdzwure if the absolute pressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m below the surface of sea? f,x2pcjejna9+ rj1x z v j)5-y(The densiv2+x r9c)y5p,jxja ze1- nfjj ty of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the surface of seaq4brt 0- vgcv0? (T gq0c0t-rv4 bvhe density 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 pi ck4k6(obhv c9ston ha o9hc(b4 kvk6cs 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 radpnvg ,-pnr f7/ius 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 pp-nnrp,g7/v f iston?

  A 13,000 N vehicle is to be lifyw 5c)n(usn( xx22fy.suneu1 f/jx k4ted by a 25 cm diameter hydraulic piston. What force n)sj(2uk1s fcxx4nnfy.e w5(y/x2 uuneeds to be applied to a 5.0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its laz;1azn *g6 8. rknpy+lhjr)brrge piston has a diameter of 40 cm. The lift raises a load of 15,000 g1z)lyn * ;z.h r+k jn6bparr8N.
(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 6vu:k qqi7u ada- +o:aN in water. What is the buoyant force of t:+uoaqv6d: u -aqk7aihe water?

  An object has a volume of znb7na/ hjv19$4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of so26 rdl 8q5fsrrk.e8l8- krkyzlid iron is supported by a string while submerged in water. What is the tensikkr2esq -fy .l6rrz58rd8 8 lkon in the string? (The specific gravity of iron is 7.86.)

  If the density of gold 0(aureni8 kg 6is $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarc a1ge5m1nogj 81 a:hmine (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 in air and 6-5x4 vi tgexc 68xwtx-.86 N when it is immersed in water. What is the specific gravity of theiegxxc xw6tvx-45-8t object?

  A container of water is placed on a scale, and the scale reads 120 g. Ng8ur ;)h.yij5uky 6ndxo u2i3ow a 20-g piece of copper (specific gravity = 8.9)r j 85hx 2y)u3o.ui uki6y;ngd 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 and densci j.uim 9- /+iovof*y 3in,hl 4hnj-nity 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 barelytxy:f; e9c czpiwhv)1 l 5e08p float in water. c9 fyp0w5hle: 8tx1; ive)cpz What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, an7 u50fhg b*ij xgqt3zu2mb+z9d 0.50 m high2 xgt7+qijbu9 5*umz 3g hzbf0. How many kilograms 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 o.j/r zou.s8p;3f1c x8w icc hef the water. The weight of the displaced water isf3jcwzox. .8p/ersi ;81 chuc 2000 N. What is the weight of the object?

  A solid object floats in jj)y k, a*ahi,water with three-fourths of its volume beneath the surface. What is the object's densy, jaka,*)h jiity?

  A 200-N object floats with three-fourths of its volume beneat )a ad hb).lbqk+1rw trv+j0.th the surface of the water. What is the buoyant force on thek0tjlb+rh.+q wav)1abd ).t r object?

  A polar bear of mass 200 kg stands on an ic76l iq / cgml dr*j;3o)t c-,cm5/zylc4rafrde floe 100 cm thick. What is the minimum area of j/lrm); 6 dtr54,qi dcyzcoa 3rl7*l/g cmc-f the floe that will just support the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 34yfl- qh/9c-drzrtb24v :t up.0 cm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 1j 2/ugm3 swud2.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this re/m223d g sujuwstriction?

  Water flows at 12 m/s in a horizontal pipe withl3 p3 cdg p49djns97xw 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 ufehl,qzu-wm : v ej ,h2kmo.s0jd(. +with 300 kPa, if the fountain is 30.u0:.m+,jej( , sqk-vfh .mu e zlw2hdo0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom o4 a:-ehemtn-3 tdbowrl5)gh9 jgx w-;f a water storage tank that holds water at a depth of 15 m. At what e r)h9oe- n -: amt;twjhg-4w3gdxb5lrate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectional au cn v6qmnlbwd8 0:-*prea $10.0 \; cm^{2}$ 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 pou r8uequq-)+yh r 4.0 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 top of the neck, and neglect any drag effects due to the upper part of -)qe+ quyr8u hthe funnel.

  Suppose that the build-up of fatty tis x,bxw:7: ymrksue on the wall 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 yx m:xr ,b7kw:constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has d . cn(inb::i-1ta b:fgdnj+ytwice the diameter of tu b1:n: gn.+aynjf-(id idt c:bbe B. If water rises 24 cm in tube A, how high will it rise in tube B?

  The surface tension xa -ma.h-47ck*kjrpj ,tj.ce of water is 0.073 N/m. How high will water rise in a capillary te4kj7ra p-c.jc, .hj ka-t*xmube of diameter 1.2 mm?

  232

  To what height would water at 0 degree Ca 2)npv-y)zb 0udt:jqelsius rise in a glass capillary tube with a di:z)) ab tu2qj vpyn0-dameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, s* aq/92fzl8vse ynfz+;a ls(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. s lvf(9 e;zl8a/ ssq2naz+y*f 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 soa o+7uwm , gir(*qgag/up film formed within its confined area. If the surface tension of soapmo 7 ui* gg(q+w,ug/ary water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectanguppx5t3y*1a l0t oit qfv f5((slar 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 framfot 31lvtpf*5a( 5x pqs0yt(ie. 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?