The three common phases of matb6hff knmftar86bm 01 /wnn/ 41z0qj eter are

  Density is

  Substance A has a deqj leulc5;+tficp, ) 9z6d4bnnsity 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 pressur6* u9d8qb jmru mk fhh+-j+/mpe?

  Consider three drinking glasses. All to n -r3vgy-et6hree have 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 boytrn--6v g3 eottom, 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 th)kp5 5o(hidq ft-; z:qofve 3ze pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute presc2/d n:1yctuqsure at the bottom 1:c n2dut/q cyof a pool?

  You are originally 1.0 m beneath the surface of a pool. l c5g1j,f hu4 m;uza;aIf you dive to 2.0 m beneath the surface, what happens to the absolute a4z;c1hgau,ml5 jf ;u pressure on you?

State Pascal's principcxx 9y(vyms, l1eov/w/p* ie/le.

State Archimedes' prin s*gpqt3 .4 kso.iu1svciple.

  $50 \; cm^{3}$ 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 constant demquvmc7 e8(45ae f4o mnsity, what happens to the buoyant qe ca5mf74 o(m4 uem8vforce on it?

  Salt water has great kzu;7 ay*ggo* v:5kbzer density than fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greaterzo a7k: v;kgb**zugy5 on the boat?

  Salt water is more dense than fresh water. A ship floats in bk t+ ygmak--v+3 hfds:oth fresh water and salt water. Compared to the fresh -kma +fgkt-3dy +hs:v water, the volume of water displaced in the salt water is

  A steel ball sinks in water but floats in a pool of mea8mqw 7 hpafgyk ;,hp1yo5-m xem;.p0rcury. Where is the buoyant forcep-h8h y;,ew5x yp;gfoq.ka70ampm1 m on the ball greater?

  A 10-kg piece of aluminum sits at the bottom of a lake, right next to wuj;1y9c/9at fxa) oda 10-kg piece of lead. Which ha/j fx9dc oy a)1twau9;s the greater buoyant force on it?

  A piece of iron rests on top of a piece of wood fl g-zr +tlcl02u1 pbim.oating in a bathtub. If the iron is removed from the wood, what happens to .+l0 l r-m bzucgp2it1the water level in the tub?

  A piece of wood is floating in a bathtub. A second/dxxwivt(v, ah , rp62;:z sdj piece of wood sits on top of the first piece, and does not touaj /6:xi vtsp,xw ;2dvd( ,rzhch 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 diamej8m2 x i9( lfyq/s1zhkter of the pipe at point B is larger than at point A. Where is the speed of the9 lf( 281yqzsikjxh /m water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If thw8-t f sn7gt m+a*aezjjb2x1 -fl7g k(e pipe widens to twice its original radius, what is the flow spee-akgxt7(atmw-ef * +jg71fz2s j8 l bnd in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pip 1 jo+yc: vh5yx3xq3ype narrows to half its original radius, what is the flow speed in the narrower sectix cy3p5yxjq o1:v3yh+ on?

State Bernoulli's princifp8c) /ro rs)eple.

  Which one of the following is associated with the ls1nk. 6u;e( z1ulbeesaw of conservation of energy 6 k1 el;u(.ebsuz1senin fluids?

  As the speed of a moving / o 6*onei-rek+c;b+ d7pxmam qpx3y)fluid increases, the pressure in the fluid

  Water flows through a pipe.6j66rtgf*fnkem s5 w5 The diameter of the pipe at point B is larger than at point A. Where is the water pressure greatest?6me nk*jw5t65gf6rfs

  When you blow some air above a paper strip, the paper rises) 7 v vsing.09sps.vwl. This is because

  A sky diver falls through the air at terminal velocity. The force of air res 5dru ai6+if rei7yb r1wd2v72ista5id22 bwuy7 diva r+ 7e1rirf6nce on him is

  Two Styrofoam balls, of radii R and 2R, arepp fpu4w649r1 l(u fkx released simultaneously from a tall tower. Which will reach th pwluu 4fp( 9f6rk41xpe ground first?

  When a small spherical rock of radius r fal)( .hrgtve8)ywup. j a;w0;b prgw4n tls through water, it experiences a drag force v0wu8jbr pae( ;).yttpwr.gnwh )4 g ;$F=arv$, 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 tr; b6cr0oy +:aqoh e1zhe flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would cause the greatrh0;ecyrooq z1 a6:+best change in the flow rate?

  Two horizontal pipes are the sammm/uj1nr/9* d5r) tb6r:l1( vauhfc3xmslh z e length, but pipe B has twice the diameter of pipe A. Water undergoes viscous flow in both pipes, subject to the same pressurthr u( d 1)u5:mnrz*sam/1h6 bx m/vf9lrj3cl e 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 sastzzq(hv3vbw 0jc s3j8, 4e;hme diameter, 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 flw,bcz( s0jz8 43 hte 3;hvvqsjow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste seems to bkn rf4te:dr l:rph(,ym:p 4siz.- is -psh:8ue associated with oil spreading out all over the surface op - i8 ps4::hk ye rr.t-i(r z:fdu:snm,sh4plf the 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 water, the water rises to a hei:ps ;7g /zjkjuxf.i2ight h. If the diameter: 7ijspz./; jxfki2ug were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweid r- po2e+jvg:*,4sf(vvpey1bq mn:t ght that they can 1ve4mydp:jf t+nbqr :ep 2vog(s*v-,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 bug B?

  Certain insects, such as the water bug, are sufficiently lightweight that *x k1mn2 ros1kthey can run on top of water without breaking the surfa*m2krx o1sn k1ce 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 dimensions 2.00 cm x 3.00uv)3u nj k6bs/ cm x 4.00 cm has a mass of 30.0 g. What is its density?jknv /sb u3)u6

  A liquid has a specificv+:g 9f zqvlm2q.e fj*qt ,(er gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00:u7xu4crha q(0ac 3 z-(mregwasn/ (t cm. What is the maximum pressure it can exert on a horizo(uqt(ehz -ar4 x:a7r3uaw0(/cgncm sntal surface?

  A person weighing 900 N is standing on snowsho cwa :c-8 kj8wb 7bhh5djfd56ies. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a dept ncklg27v*7 eu34rc)z:s-es bkc. xbdh of 120.0 m in th3c c*en. sc-v k2xzdukl7):rb7b4gs ee ocean?

  A circular window of 30 cm diameter in a submarine can withgny:nd .o*u 7qstand a maximum force o :ny7qnod.*u gf $5.20 \times 10^{5} \; N$. 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 300 k6vz8u ,cewui+ u..kl ntw97im Pa?

  What is the gauge pressure at a rqfix yvep+x.xe q:1igsb01/.,e ap :location 15.0 m below the surface of sea? (The density of seawater i i:ps1i1q fep0 xerb:./.+a exyxqv, gs $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m b1(n;*xdq/ uoq n dpfd-elow the surface of sea? (The density of seawater isnp(ud*f/-dnd 1x qo;q $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine.p s20:1 ofkzs9hn 3lff The small piston has arezln fk 03s:9fpfh2os1a $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?

  In a hydraulic garagwmjuqvzk7m/ :z(tu,4e lift, 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 / wm,(tqz7ku:4jm vzu weighing 20,000 N on the large piston?

  A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. Whm3wp*ddn tt 2 .qr71yxat force needs to be applied to a 5.0 cm diameter piston to r*d7x nwqmtdt1p2 .3y accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0 cm, and its largip7wfgc 5.2:rfx qq :te piston has a diameter of 40 cm. The lift raises a load of 15,000 p gtxqwrc:f7i .:f 2q5N.
(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 is the buoyant forxx0p, o2 vs +bud qie7lu5 pv1o9lt96qce of the wate e l1q+pbso9,polqv 7u5tixxdv0 u692r?

  An object has a volume ofrhs(j(:y ey/ yutf;1oi 8zd5s j(i)yyd5gu /y $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solqts hkeq(i5-0u e3uzm1/qx8 nid iron is supported by a string while submerged in water. What is the tension in the string? (The specific g/-qnx0t8q5ueh1u i( kz 3 sqmeravity of iron is 7.86.)

  If the density of gopv-z sl0d if,;psy66vld 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 steel submarine (density =dg1jx8i h(do 8 $7.8 \times 10^3 \; kg/m^{3}$) 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 6.83qen l 3:y/od-gqzp x54saj9d6 N when it is immersed in water. What is the specific gravqs3: xoley94d qd-g/j5nz 3apity of the object?

  A container of water is plac addtl t0.p0izz3f1 j-ed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 1-taz0lfz 3dd p0.tj i8.9) 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 wiib5cu nr0:;4 sh:lchith 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 ww 51o*kdp ohexh/95jand diameter 2.0 cm will just barely float in water. What is its mas o/h*h9jw x 5kw5o1epds?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m wide, 3y c 9 ,bzjkipk ot*px4l.3;:syjwdj 1pb9ce-and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks in a laypk e *b,:399cl.j1cyij;s4 kozw-x p tb3pdjke?

  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 n)-mh upgwk+l 9m+pont/(pg4 the water. The weight of the displaced water is 2000 N. What is the weight ofm wg( p9ngpotmnu+)4+-l /pkh the object?

  A solid object floats in water with three-fourths of its volume beneath the surf g ro5 qjisxea.)y4x (m wklu9-m--gz5ace. What is xj la59r.)iku s-o5 qz- -xmg4mywg(e the object's density?

  A 200-N object floats with three-fourths of its volume b3nbl(( hdgn-;* g7gyle bqiv 9eneath the surface of the water. vn*iegbdnq( (y;-l9 b hglg73What is the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the n1v sy9;s0 qf)-2-w slhkgt dvminimum area of the floe that will just support the bear in saltwnkly- wsdvs2g -;q091f)sthvater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the;bw;qe 5x:t)blz f2nk /uuhr7 flow rate.

  Liquid flows through a 4.0 cm diameter pipe atuo-8cqfh3hb 3 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in - f83qhhc3bouthis restriction?

  Water flows at 12 m/s inefpr;kfr76i f0ar,l-w8y* ijnph 1p/ a horizontal pipe with 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 w(rxn*m (x+dz fr0f aw( 8h9mhzlq*9ucith 300 kPa, if the fo ( (h9l0nuzfm +xa(w z*rfhm8 *dx9rcquntain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the 3;g+pp k34i)o8r 2zmm9 qqtx9r v agjlbottom of a water storage tank that holds water at qv3iqopgk 9r z l m4x8;mp)gra2jt93+a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a y, 2mpf7:afcyhorizontal 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 visc jem0gnbi08q)osity of 0.20 Pa-s. How long would it take to pour 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 the0gen0 )jmibq8 upper part of the funnel.

  Suppose that the build-up of fatty tissue on the wall of an artery da/v.g . /bcdikecreased the radius by 10%. By how much would the pressure provided by the heart h/.gi av/ .cdbkave to be increased to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of watermh)p l2z bt4h au7ao:.. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how highza p7:l4) hubtm2 .aho will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will waterb (n;42s.ezzlnjv2rn yqs/ 4b rise in a capillary tube of diany4lzsjs2 q42 e/nn.vbrb;(zmeter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a gla5rp ;wmzkyb9vb2 p2)9g(wwp uss capillary tube with a diameter p2;(9p9wm25u)kpwvrbb y gw zof
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water rises in ctb6d6 zzg e+ x,bht+/the tube to 4.0 cm above the level of the pan. The surface tension in the liquid is lowereb 6 /+z6t,hb+xcdeg tzd 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 rectangularwsy-o3 6(al 1c, xrm8.uexzjd frame 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 filmms3d6e8,1 - jyx. rlxc owauz( exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and w6 y h2fy u2tkfhao.j)kuz:5a xojo10 5idth 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/mzhay5 6fhfu2 a0k 51o)tx y2.jjoko: u. How much work is required to move the adjustable long side so that the frame is 12 cm square?