The three common phases gym 9n)cs)8ow/wir4 jof matter are

  Density is

  Substance A has a densit50 md;dj3u j1 gax9r1 odehwd4y 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 k7g f.co*ijc7a unit of pressure?

  Consider three drinking n1 6u+ 3;3pfe9/oih 1v+diwrgr jmbvmglasses. All three have the same area base, and all three are filled fjr+6u;v1/m+ d3vir3 n1 m 9w gipebhoto 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 has the greatest liquid pressure at the bottom?

  What is the difference between the pressew-1z)+ qv1wl xe nbc;ua-.fp ures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolute pressure at thev2pfr w0fod eel3a,:* botto2op3r flv ,fee0*:adwm of a pool?

  You are originally 1.0 m beneath the surface of a poh 8+oe3.msgnfol. If you dive to 2.0 m beneath the 8fseng3h.m o +surface, what happens to the absolute pressure on you?

State Pascal's principle.y 87:g+e1aduq+.c ied7hw kg +x6m,rigm8tt l

State Archimedes' principll qw x6qd 0.ff1ta9a 0geeo5+we.

  $50 \; cm^{3}$ 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 deepc5hzbkv/ m :(hq j+n.per into water of constant density, what happens to the buoyant force on it?5:k.p n b(mjchh+qv/z

  Salt water has greater density than fresh water. A boat floats in both frr;a t0ldm2d 0kesh water and in salt water. Where is the buoyant force g2 rl0dt;m ad0kreater on the boat?

  Salt water is more dense than fha w0t dp(/ck(rp;2 azresh water. A ship floats in both fresh water and2p ;hk/p( a(w za0rdtc salt 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 mfc44ga/8x* *nrc 74b)v hspm8z ghmrlercury. Where is the buoyant force on the ball grns fchhx rpgvr84a4b*) 47/ m*cgz8mleater?

  A 10-kg piece of aluminum sits at the bottom of a lake, fc5, 4fqzb/vpe1 lq2hright next to a 10-kg piece of leaq1qzpbhfe lc vf42/,5d. Which has the greater buoyant force on it?

  A piece of iron restsb +rf;g cl1z9m,fw*gz:ki s+s on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happens to the water leveksfzbg 9:1mcz lf,;*+rg +si wl in the tub?

  A piece of wood is floating in r h+snlb,8.eol)2yr o a bathtub. A second piece of wood sits on top of the first piece, and does not touch the water. If the top piece is taken off and placed in the watry8,n s. oelr oh2)lb+er, what happens to the water level in the tub?

  Water flows through a pipe. The diameter of the pirt5q)ku4a:p) j8h nu epe at point B is larger than at point A. Where is the spu:)) j48panker t uq5heed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pi8 lbd b is:61;.qpdbqgpe. If the pipe widens to twice its original radius, what is b:qpq.1lbb;8 di s6dg the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe narisfai y) c9svpg2p qb7 w9 i2r9.htx;3rows to half its original radius, what is the flow speed qw;pg 7 a i2hx) 2i9rp 9tisv3fcby9.sin the narrower section?

State Bernoulli's principle.l b,7. alwu6km53gqxk/ b+ oeg

  Which one of the following is assx n4:cqcwd21z ociated with the law of conservation of energy in fl 14zxd2ccwnq: uids?

  As the speed of a moving fluid increases, the pressure in the fls-gpfy,i 5de tt z/u/2uid

  Water flows through a pipe. The diameter of the pipe at point B is l9 k ph4j:y*d t2jrqrua wy55u(arger than at point A. Where is the yuyu r4*h(:t k dprjj5 wq259awater pressure greatest?

  When you blow some air above a paper strip, the pap ohh ,.v.cnt.per rises. This is because

  A sky diver falls through the air at terminal velocity. The force of air resisr,2pm* s :8z u9witewytanc tmi ,w9suyz8w:2 pr*ee on him is

  Two Styrofoam balls, of radii R and 2R, are.c/qzwo 1)hy u released simultaneously from a tall tower. Which will reach the ground firsow uc1 /hyq)z.t?

  When a small spherical rock of radius r falls through water, it experiences a njk4h/ 1v ch 120aa4 -walihutdra1ahah-42/t v iwuhja0 klc41ng 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 thet*z9u (dmxd0; /plgqn 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 td/0*zgx 9mu dlq; p(ngreatest change in the flow rate?

  Two horizontal pipes are the same length, but pippuogu;p -1r 8ohp:t e1w /6d*n*uucuje 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 pip uo/g*ewd p8o ;cuuh6 p:tr1-1 uup*njes. 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 a sz6k,xrz(aicw6hwr9s+ p; 1as pipe A. Water undergoes viscous +iwa6r a1,x szs w9cp hzk;6(rflow 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?

  When soup gets cold, it often tastes greasy. This "g7 q;5ds ysu;) :ig j,zcrj)bbfreasy" taste seems to be associa 5z ;s,bibjs)qg:uy7f r j);dcted with oil spreading out all over the surface of 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 wx m xq,vl wd1(vv,: rkc:vs68uater rises to a height h. If the diamete1k,u, l 6wvvdrxqsvc :v:m(8xr were half as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight7 h-0fp1k qz p0ai,bwe-x)gz -ugs xd* that they can run on top of water without breaking the surface tens-x1q)a-,pgwugfz *xeb p0szd7 i0kh -ion. 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 a:g5 cp w.87 n-etmoqzsufficiently 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 big as bug A in every dimension. That is, bug B is twice as long, twice as wide, etc. 8weq-ca5:zp .tmgn7oWhat is the maximum upward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3dbh7/b) v9(tj5r4 a1lfia ix h.00 cm x 4.00 cm has a mass of 30.0 g. What is its density a1b7a)idht9ih5 xrj/v fb(l4?

  A liquid has a specific gravity of 0.357. What is its densit9l+un-i,vi t zq:zn*z,cz cb 4y?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x 4.00 cm. Whaa0we 6kt.v3 3,jjcm bvt is the maximum pressure it can exert on a horizontal surface3a e3wkvmt,.vjcjb06 ?

  A person weighing 900 N is standing on f .tnqxcj;4 v5-9u+nkgtcgbfeyuh2r ;n/d/2 snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at 0hcd)4cxgt4h/+vgs)d j0ld g a depth of 120.0 m in the o 4j0dg)vchx4 sh/0c )gl+gdtdcean?

  A circular window of 30 cm diameter in a submarine can withstand a b:r)ik ov 69fz*vj+ i(zkq-9i my;k ssmaximum force *6o:i)bqmj9is rz9vvs;k fky(k -zi+ of $5.20 \times 10^{5} \; N$. 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 r+**zdsz4h u +yqd h:qhz; lqh1 2(cptpressure is 300 kPa?

  What is the gauge pressure at a location 15.0 m beqnc3 jirb)2i0q 4 x-znlow the surface of sea? (The density of seawaterr)nzj4b3i icqnx0- q2 is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the ej5r;olxs7py3-l kir -o-d8 msurface of sea? (The density of seawater p7l l-8sde -xo-o;rk r3i5ymj is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The sma7vqmvxn26l33sik.sjfay 3 h r1p 46fill piston has aren6yl 2f7kh6 4smx1fv3 ris3pja.3q vi a $2.0 \; cm^{2}$. 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 radiuu qa,xo/ntz j:-t9 t4ds of 5.0 cm and the large piston has a radius of 15 cm. What force must be applied ou9qxta nz4 /d:j-t ot,n 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 piston. 7m.avusl5ehs8 )sn7rWhat force needs to be applied to a 5.ve7)ua8nl7s r.h 5sm s0 cm diameter piston to accomplish this?

  The small piston of a hydraulic lift has a diameter )dvo m;0vnx3 gzz0:br of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load of 1 )d;3 x 0r:vzbzov0gnm5,000 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. ly3oo9fv l: u -rl4wry:cw-*-kul(aaWhat is the buoyant force (uyvowf9- wr*-kal- ll o c:lyua: r43of the water?

  An object has a volume of+h *(ml it5suq $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a string whi mbgie(q */u1ile submerged in water. What is the tension in the string? (The specific gravity of iron is 7.miu(eq 1g*i /b86.)

  If the density of go3 gq39mxy ho jp2d7bw3/a -5fqbbq rg/ld 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 submrgm6px2n( er5 arine (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 6.86 N when i dcr5 ;a2 jevgy7)h-jybdx)3ct is immersed in water. What is tdx yj-2r3 d ;y)ja ec5c7hv)bghe specific gravity of the object?

  A container of water is placed on a hc;3.2uyx b c3ba0naxscale, and the scale reads 120 g. Now a 20-g pcyuhbbcax3 ;3a 0n2x.iece of copper (specific gravity = 8.9) 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 wi9 eiecol*h.hu 7)b7zuth 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.bq1xf;6wat 9 u0 on6gb.. jmkq0 cm will just barely float in water. What is its u1;f.qaj 60mk.9wbogt 6nxbq mass?

  A rectangular box of neglr/8 s+e fsqt4bf(w/n 6hk9s cligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilogramb frfnst/c6q4(9w hse+sl k /8s 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 halhk -f jz2xfd;9f its volume beneath the surface of the water. The weight of the displaced water is 2000 N. What is the weigh z2k-jh;xf9f dt of the object?

  A solid object floats in water with t 7d6zr-uh6r3:ee ztcon cax6(hree-fourths of its volume beneath the surface. What is the h-dr(z7ezt 6 ouaec:6xrc n 63object's density?

  A 200-N object floatsf;syih;-l ay0x; x iqe5 xa/b. with three-fourths of its volume beneath the surface of the water. What is the buoyant force on the objech-yx.y lfbsa5 i ;qe0/a;ix;xt?

  A polar bear of mass 200 kg st0k6tq) vaq,of 2zo7uqands on an ice floe 100 cm thick. What is the minimum area of the floe that will just suppof2uo ,k)7v06 qoqzqtart the bear in saltwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 xg ds)o0w8 gium5y- 1wh9/z vecm at 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pi-vhfcs4ju ne :ca;zz 0beug8:*bq2/l pe at 1.0 m/s. There is a 2.0 cm diameg;bu- /f0:h 2q 8s u*l:beaceczjvnz4ter restriction in the line. What is the velocity in this restriction?

  Water flows at 12 m/s in a hori0zenq*4bd; nsopakc/;fnf 27 zontal 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 withdzttsh/ 0wv:awb77nu e;6ap , 300 kPa, if the founvezatsabuh d,0:6 ;/w7pwt7 n tain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of5jbgo npq:36; f ephzi/d +:aq a water storage tank that holds water at qz+3/5abnpqjh od;6p g e::if a depth of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sec37 esxn .9mavgex k-4jtional 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 vig2 ma f4*,rz-tn7n()hkwkctp scosity 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 da)cz*g27nwrpmf4t ,-kn kt (h ue to the upper part of the funnel.

  Suppose that the builddsge+p l5v*m76sksk2 -up of fatty tissue 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 cm2*7s5 +d6lsse v kgkponstant blood flow?

  Two narrow tubes are placed in a pan of water. Tube A hw:u *1mpyl-4 8oky iu:h4zf qmas twice the diameter of tube B. If water rises 24 cm in tube A, how high will i4hyi:4-8* po klmwmu f1u:qy zt rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water rise in a mj7h:.btki/)5b fz qgcapillary tubehz7tbjf kb mqgi:5)/. of diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glae7et dksd pd3i2kmsk(,: x;o,ss capillary tube witstm7kp d,d ks;(d 3eko :2i,exh a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and twild 3kfyik0 pa:d 2 tu7an*t4sj03 h3he 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-t3wdn0:ika43u f 02pi jys7ka t *dlh3half 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 width 0.600 m witj/r;zmzo )cq f.uf+2iy+ ;ojdh 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 exert on the 0.600 m .2iy)/ jrzu omjo;+d+qf cf z;side?

  An adjustable rectangular frame has length +ehe(0eae o nn1+z/ for9p*g a12 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 frame. Soapy water hez*(o fa+ganpo/ he+e0 rn91eas 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?