The three common phases of matter kr b;tsa2/ a;pare

  Density is

  Substance A has a density ob34vt +t fsz7k 6n/l,pemx+h lf $3.0 \; g/cm^{3}$ 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 nwaxjb:o 126cdt4 (yk dot a unit of pressure?

  Consider three drinking glasses. All three nmqs.jdd/pi6 w)8a f1have 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. Glass C is narrower at the top than at the bottom, and so holds less water than A..mdws8d j1fqai pn 6)/ Which glass has the greatest liquid pressure at the bottom?

  What is the difference between the pressures inside and + jy m)h)k2tdnoutside a tire called?

  When atmospheric pressure changes, what happens to the abs.lbld ;,:c ptv,g8u ysolute pressure at the bottom of a p:uy ,8 ;ptcs.bg,vdllool?

  You are originally 1.0 m beneath the surface of a pool. If you dive tatq9md) in6v srh,,-p 2y0at ko 2.0 m beneath the surface, what tqp- a, dn h)ya09kirmvts6,2happens to the absolute pressure on you?

State Pascal's princio(m5xlq 9n3k+c6yg ek6 rjo1eple.

State Archimedes' princi xh;l z3aur (gee 5*hiwd:nl6a*qs -9aple.

  $50 \; cm^{3}$ 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 deepe :ffy((:7 cq dr:eh(vitaa;ly r into water of constant density, what happens to theqavh a::ycd(((ye fl;fr 7i:t buoyant force on it?

  Salt water has greater density than fresh water. A boat floats voojn3uwc8 y1hmea4.l0y3+ avl - 2jxin both fresh water and in salt water. Where is the buoyant forcva3 -wcyx 3mouavl ny+ejol0h2.814 j e greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fre z ey/u:tl-ma+sh water and salt water. Compared to the fresh water, the vy +lu:-tz/e maolume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mercg,wg) 8c r,nrzn(q(jyury. Where is the buoyant forcen(rc ,zrq g( ),w8njyg on the ball greater?

  A 10-kg piece of aluminum sits at the bottom oo x2 p 0t:0kcv9pdtan4f a lake, right next to a 10-kg piece of lead. Whic v:2npax dp t09ck40toh has the greater buoyant force on it?

  A piece of iron rests on to8 hjoixl-l3pi* ; ve/wp of a piece of wood floating in a bathtub. If the iron is remo8 /ve;oil3l-j*hi xwp ved from the wood, what happens to the water level in the tub?

  A piece of wood is floating g8b:lzt7m-kx in a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. :7zkb -8t lxgm 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 pip(gdia6 j.aqj iz4 m)h9e. The diameter of the pipe at point B is larger than at point )h4(maia .jgz69idqjA. Where is the speed of the water greater?

  An ideal fluid flowsrhla 6* bt6b1t at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius1tbhbr66a*l t , what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horsxgc54(0w1a fspx;gocgs v69c;0aze izontal pipe. If the pipe narrows to half its original radius, what (gogxs5;c w ae04a ;s cvpgzs1x f690cis the flow speed in the narrower section?

State Bernoulli's principlyoxtyo-2 2-qwe.

  Which one of the following is associated with thtqu1r,1eq:rp ( h,r zle law of conservation of energy irpe:1qu rt 1,hl(rz,qn fluids?

  As the speed of a moving fluid in iz5zh5uc-om( d1)h ogcreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at poinw2)b.8z s-pp5 5tx+zpj foazot B is larger than at point A. Where is the water preszp xtoa)sw2j.5 +85fzb zpop-sure greatest?

  When you blow some air above a paper strip, the paper rises. all9;eq:nd/5remn 6 xm ;vbw8 This is because

  A sky diver falls through the air atx c4xqofg5jmy5k mlrpm:) xf;+ x8 *-bqwo7f0 terminal velocity. The force of air resistance on him is+fg kjmfp b5xl5q7ox-;r8*o:xc0 4f y wm)mxq

  Two Styrofoam balls, of radii R and6/h 0 bto6:kxks)xtvi 2R, are released simultaneously from a tall tower. Which will reach the groun6xbs6 tik kx) t0ho:v/d first?

  When a small spherical rock of7vexg + zk5m p.xu*o1p radius r falls through water, it experiences a drpzpxe .7vuk +5 omgx*1ag 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 onzqs/us +,y:did6f,;u ok k-pd the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would c;zk/,yiud,oq- dud+ s :ksp6fause the greatest change in the flow rate?

  Two horizontal pipes are the same length, bxzkqdca emi7) 0g;40. vuawr5 ut pipe B has twice the diameter 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 the flow rui 4e0dr0q.c7;)m zxawk5v agate in pipe B?

  Two horizontal pipes have the same diameter, but pipexv i7: hw:x9p:n68bpmkez ie4 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 zpp:i67bmi evkhw4 98:xn xe:in pipe A?

  When soup gets cold, it oft3yd7qf d x.joy-a0w4v en 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 rev xw 4qay3ydd-.j7fo0adily explained in terms of

  When a tube of diameter d is0yaqs ,3tl3 xr placed in water, the water rises to a height h. If the diameter were half as great, how high would theys t 3x,al3qr0 water rise?

  Certain insects, such as the water bug, are sufficr8yv, 6k)i5 d)i k uv5krze:cwiently 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. k5 ))ycvrekz u:r,dkiv56 iw8 What is the weight of bug B?

  Certain insects, such as the water bug, are ssbn cj*r u*ynz)- 9p-iufficiently 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 thay-*n9-znb i rp)uj*cst 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 x 4.00 c,mgfyfdw/ 6-m9;f juh m has a mass of 30.0 g. What h ufm -d/f6f wy9j;gm,is its density?

  A liquid has a specific gravity of 0.3m v . qw3 h.t295x(zxb;fectux57. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the ma);. ny upyk:woximum pressure itp):y nw.uo y;k can exert on a horizontal surface?

  A person weighing 900 N is stani+/6 f0puzqwct4 fin 4d-qxo+ ding on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute)h /yp l1(pjcfr.9k/hj must a submarine withstand at a depth of 120.0 m in thep/1 /hkyj(jhpr9lc . f ocean?

  A circular window of 30 cm diameter in a su k3p2ys*o:n6xjiq /c 6v raj.jbmarine can withstand a maximum force of i6 /a3yk*.v2jsr pjc :n qjox6$5.20 \times 10^{5} \; N$. 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 pressurehm* kiot.0f: oco e9/j is 300 kPa?

  What is the gauge prsreo 9eplt u j1c,p:c1o 3n5o5essure at a location 15.0 m below the surface of sea? (The density of seawaljc:es 5 ru5con,3eoop91t 1pter is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 150sx 4pm5)ad g-l(p) xo7 lvmxb.0 m below the surface of sea? (The density of seawlb m -da04pxo5)x)(l g7s mvxpater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the smalpl i rjxk5ew)4c1 hpqd/jc-o: 1ei(j /l piston of a hydraulic machine. The small piston has 5jp :jp (/cicwrloj-d4e)i/ kex hq11area $2.0 \; cm^{2}$. 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 radiu-awa(cu bdo -kgw9w +n)a7 u-us of 5.0 cm and the large pistdwn --uwaab-k(ua+) w97uocgon 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 piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic pistonu.p kjaud5;yw f5m 7r8. What force needs to be applied to a 5.0 cmm7 5pr5 ; .ajuwky8ufd diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its large pis)0njh)i nt+*trn g a.ston has a diamisj0*nta.h+)nn g t)reter 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 air and 30 N in water. What q: a6 egseidfnd(;2n 6is the buoyant force of the w g e2ndaid6(;sef :n6qater?

  An object has a volume(2oj a c6pl2kt of $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of soljwc 9tn2z 5z(xid iron is supported by a string while submerged in water. What is the tension in the string? (The specific gravity of iron is 7.86.)wt59nc( 2 zjxz

  If the density of gold inqq9k0po+4 0iwh +;h:xdp as as $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel submarine (density = elo,/np g71 dd$7.8 \times 10^3 \; kg/m^{3}$) 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 6.86 N when inooc ,a+-ub yp8 k,i)nt is immersed in water. What , -bpnoky ni)8, a+oucis the specific gravity of the object?

  A container of water is placed on a scale, and the scale reads dw aje7qk9c4n*uvip.me) / j2 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and lowered into the water, not touchin pn/*2 edau9)cj7kivq wj .m4eg
the bottom of the container. What will the scale now read?

  A piece of aluminum witnrbv qw.ux55+ na sr0fpyi-5(h a mass of 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 of length 12 cm and diameter 2.0 cm will just barel()hv;o/pfd j2 8lsohecn b7a4y float in water. What i j74vf ;(2nls8 oapehcbd o)/hs its mass?

  A rectangular box of negligible mass measures 5.0 ,ngs3;-h + 3:iea-pxirm4 n,fzuzhnhm 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 i4 mi ,-px3,znsghuhr:ea ;+h- z3fnna 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 r2ap6jcg:dsh,i 4/xn8 m-j qi weight of the displaced water is 2000 N.:n-jd/ a cq,gjpi6xmi 4h8rs2 What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the 6z.ir3fw mo5tv+47 czga-xbz/o qe. m surface. Whatr 6xoob.zc 3qf- 5 z ew./mvi+7gmzta4 is the object's density?

  A 200-N object floats with three-fourths of its sl8:x9 :(ndxtx n xq)gvolume beneath the surface of the water. What is the buoyant force on the objecttd(g:x9xxx8n q): n sl?

  A polar bear of massma ynv1 gg.m/-/v(p bm 200 kg stands on an ice 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 specific gravity of ice is 0.91vgg(m paby/.-v mnm/ 8.

  Liquid flows through a pipeq 0gjl37u5q- :nlo-mi 4ie ,qrr x4gwz 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 mwkil9g5(*tdlp m b*8u cm+ 7rn/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in thislkc(+d w** 8gt5mliurbp m9n7 restriction?

  Water flows at 12 m/s in a horizontal pipe with a pr2q m hvfe57pl;essure 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 pq+ppc7:qad ss:n 5 (yvump to supply a drinking fountain with 300 kPa, if the fountain is 30.0 m above theanqp:+7ps: q5s dv c(y pump?

  A hole of radius 1.0 mm occurs in thb2 38,dg yz.ykap +vvic)kp7ve bottom of a water storage tank that holds water at a depth of 12c.+v) kdz,gp y7ivpkv b3y8a5 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sect4sr9)p/lwsoz-p*lpu w sb0 c3ap,m9nional 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 af: u r/5lxe(gtjiv10wn2 -dk1dnsk2s viscosity of 0.20 Pa-s. How long would it take to pour 4.0 L of oil throug e/2(ki 1v ktx-g ju5nwln12drf0:ssdh 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 the funnel.

  Suppose that the build-up of14yc itc/v 8qh;o0zn w fatty tissue on the wall of an artery decreased the radius by 10%. q8tw o ;z/y4 icnc1h0vBy how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A has twice the diameter ofjn lm(jh -1edn*sd-:mr*+rgb hwtd(vx+g0w 2 tube B. If water rises: jhs*xl1 wgd--r(hn 2*+ndmwted g 0(jm+b rv 24 cm in tube A, how high will it rise in tube B?

  The surface tension of waazw1jl3ytyuy81w3s 3 d9 ;d(wh /bsw lter is 0.073 N/m. How high will water rise in a capillary tube of diameter 1.2 yw l/wt3ayl;9 d3s3hyw(11wudbs 8jzmm?

  232

  To what height would water cm i/arm( tf h8wq;5(vat 0 degree Celsius rise in a glass capillary tube with a diamew(v 8hmfqa/ 5t;(irm cter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and th+ ci3xqx.9qt6qgkrpr.- zgt., x4oq ce 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 orx t.rqcp ggcr6z+. - q,.x3k t4oqqix9iginal value by the addition of some soap. What happens to the height of the liquid column in the tube?

  Consider a rectangular fig h2qg c)dub*puau64w96et2 0u ls4q rame of length 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 qau0s4te2ipd9) qgu6c2ubw*u6gl4 h film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and isc15 m5xudizc-h) ,ot b built in such a way that one of the longer sides can be mov,zbx1i5-)c co m u5thded 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 long side so that the frame is 12 cm square?