The three common phases of mar hhyc/ bq6o h+)u*n8vtter are

  Density is

  Substance A has a dezmk8)q gg0sbg 9upk( 1nsity 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 following4 x+zygqv.:fs ,m /hxe is not a unit of pressure?

  Consider three drinking glasses. All three have thet6/wm *)taa3mwkv-shl9stu)k5wy 2(n .lfe o 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. Which glass has the greatest liquid pressure at the bot t2*s3sk9 vo ) 6e5/( ant-lf )awyku.mtwlhmwtom?

  What is the difference between the pressures inside and q cyvydy;; o4ex7k5tea /w+ c/outside a tire called?

  When atmospheric pressure chanx ;j8vlka+viy/ 71trwges, what happens to the absolute pressure at the bottom of a po;/ 7+ tyvklavj iwxr81ol?

  You are originally 1. .w.(9s:crpannbw. xp0 m beneath the surface of a pool. If you dive to 2.0 m beneath the surface, what n ars(pw 9n.. pwcx:b.happens to the absolute pressure on you?

State Pascal's princnmg ;y q-*6fnciple.

State Archimedes' pri)le u5vsdq*1ke)2lzltx- pr0 nciple.

  $50 \; cm^{3}$ 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 density, what happenqy l s40on6;hxs to the buoyant force onys64n0 ;q ohlx it?

  Salt water has greater density than fresh water. A boat floats in bothnio;/y1;m ;oyop4thl 8orr5e fresh water and in salt water. Where is the buoyant force greater on yo;1nrp hlio5 ym;o8or4 e/t; the boat?

  Salt water is more dense than fresh water. A ship floats in both fre2q3 ba+:xkf.ko) ssfksh water and salt water. Ckf qo.f: sxb3 )+2askkompared 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 mercurb8 ;5xxkh6n yn1uhe2 ky. Where is the buoyant force o;1k82uy5 n xhx e6bnhkn the ball greater?

  A 10-kg piece of aluminum sfb82g g0nyf 9;dcz:pjits at the bottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoy28zg0gnp9yf:fbc j; d ant force on it?

  A piece of iron rests on top of a piece of wood floating in a bathtub. If the. aq3b qxn.rvb2ssaqe( ,2pi mp4xu 7, iron is rema(qpur qnaixvb 7ss3 .2.e q,2x ,p4bmoved from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of woods d x/ t(b h. +gu8kew);2osicw7b+giu sits on top of the first piece, and does not touch the water. If the top piece +2sgck.iw+sot8bw h/xg(d7u e) iub; is taken off and placed in the water, what happens to the water level in the tub?

  Water flows through a pipe. vs0vnd v n;lzw*35,fbxc ;+th The diameter of the pipe at point B is larger than at point A. Where is the speed of the water greaz;wt53+vvhbx ,d;0f*v snlcn ter?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If thecazd70u6-dums;pe qcj(, d v: pipe widens to twice its origi cqdemua(ucdd0pz,: jv67s;- nal radius, what is the flow speed in the wider section?

  An ideal fluid flows a jt3edla 7oezy ee(:38t 12 m/s in a horizontal pipe. If the pipe narrows to half its original radius, what is the flow speed in the no(ej3z3el7t d: aee8y arrower section?

State Bernoulli's principle:ii sov)mcc7kok 98( s.

  Which one of the following is associated with the l5qrnt 3 5dam+ 1phs t:/j8qwjuaw of conservation of energy intja +n1qtr5dh3wmp5:squ / 8 j fluids?

  As the speed of a movingly1dynmse(2r-o 0 ed( fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of the pipe at point B is larger 0 fsw*(okxj7usy0y j7 than at point A. Where is the water pressure greates0kws 7y(0ojj *ysx fu7t?

  When you blow some air above a paper strip, the paper rizn hw1mg g ny(8s7q(9nses. This is because

  A sky diver falls through the air at tedjat4*/h7 z i b drq2/a6.aqhhrminal velocity. The force of air resistance on2 d6atq4ia7.rj q */bdhahh /z him is

  Two Styrofoam balls, of radii R and 2R, are released simultaneously from ah13:+w 7ijhqyrjc cki 3y*f1 a tall tower. Whicj3yyh3q* c1 :rk1h+iifc7j awh will reach the ground first?

  When a small spherical rock of radius r falls through water, it experien p3-d mezw:q*kces a drag w:ed 3*kq-mpzforce $F=arv$, 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 flow of fluid through a narrow pief/ v3q6xn/m jai1bm;pe? That is, if you made a 10% change in each of the quantities below, which would cause the greatest change in the flow f/;/mqi jabm1e6n3 xv rate?

  Two horizontal pipes are the .b3hr ;vf(sb.d ihyh d50 6joa-ix9rvsame length, but pipe B has twice the diameter of pipe A. Wat.5v-y.sd(v6r9 dbx;hh 0irifoj abh3er 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 rate in pipe B?

  Two horizontal pipes have the same diameter,;dym7o).i g bl 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 flow ratebd oy;7).ligm in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" twt5xzkpl.;k iuz3 7q6aste seems to be associated with oil spreading out all over the surface o7ptq;zx.u5 kw kzi6l3 f 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 height h. Ilyt1vo02 hnk 0f the diameter were halotny2h0l10 vkf as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently lightweight thprz-l6ap d ;+jat they can run on top of water without breaking the surface tension. Water l+-pj; dp6arz 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 lri1k j0fu4jk9 ightweight 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 jk1ijuf 94k r0the 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 dimensi o chbnx09 mkj4-ebv1*ons 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. Whajbx9c-ve*ohm041 k n bt is its density?

  A liquid has a specificn1sju7/p k/z.mdzjj09x v fx- gravity of 0.357. What is its density?

  A brick weighs 50.0 N, and measures 4 xmw)mr vtp0 k.z)e7m6p-bn m30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a ho70zm ewrxm 4 btknpp6) .v)m-mrizontal surface?

  A person weighing 900 N is standing on sno2q /m/ruwzc+5 rff;rgwshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolut / ;6sm/wx*j+ yvzwnfre) must a submarine withstand at a depth of 120.0 m inx zr6w syfm*+jn;v //w the ocean?

  A circular window of 30 cm diameter in a5u pf4is7 7nqn submarine can withstand a maximum force ouqsf 7475nnp if $5.20 \times 10^{5} \; N$. 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 3 bt0h( +u-cuas00 kPa?

  What is the gauge pressuid 0fs)nk+y7k re at a location 15.0 m below the surface of sea? (The dens7yf+ks nkdi 0)ity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a locationr6:ziu4sbvne( dq1zw c:8 x*r- fyq(o 15.0 m below the surface of sea? (Thsyibur (:dz6e(:v o x84nr zq-fwc1*qe 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 pist* cf(31lwqeue4ko *hz on q*eeo l4 *w(k ufz3c1hhas 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 radius of 5.0 cm and th(.e c(r:riw1zznvbde* w(h6 5 itvg(ze large piston has a radius of 15 cm. What force must be applied on the small piston ir(hwz6( zd i1z n(:rt*(vcewig b.5e vn 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 d,r;bir7-cnga tujxzkp j/ ;d3/47mdxkx n7g6iameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplishxa/nc ggm;xkzpkx4j-3 7td6 ,r;iju7br n7d/ this?

  The small piston of a hydraulic lift has a diameter of 8.t+()lvqaiki8 dx d;a6 0 cm, and its large piston has a diameter of 40 cai lidq+dka)6(vt ;8x m. 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 is the buoyantc d tur6tpecie7uc gx9/o s1z1z/f4f)a i)4n6 force of the waterifxuce c16)9rg4i ufd1 n/ c)as ep6ztzot/74?

  An object has a volume of k (ucfdnl0h2d. j)/mj $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by a str.z:rk7n3g+tv x rer6ring while submerged in water. What is the7gr+ k r.x6 etz:vnrr3 tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold ijzbx-wp hqpvh 8zh371 -i1/s xs $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subma .w -( m4xi p6f0ftuk+hmr4tfqek,r1rrine (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 n6v0ip spuu-, 6.86 N when it is immersed in water. What is the specific gravity of tuvu,i 0s np6-phe object?

  A container of water is placed on a scale, and the scale k7 zo*2sbaai+ reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from ok7 +iz*bsa2aa 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 1.05e: 2d z,pw;usii4i9lk *loc5 icp v8t 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 j vvr //;ix0dav7mrd,xust barely float in watermdr vr xv7a/0;/dvx, i. What is its mass?

  A rectangular box of nt dc5(9xfjutt/fq:: pegligible mass measures 5.0 m long, 1.0 m wide, and 0.50 m high. How many kilograms cuqp/:ttfj9d(: f xt5 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 of the wate9pka 3r q6z8 oj*q;yo2npd fa-r. The weight of the displaced water is 2000 k*ooay6-qzq9p darn2jf ;8p 3 N. What is the weight of the object?

  A solid object floats in water with three-fourths os/q 3q so uj8m9r/kqz+f its volume beneath the surface. What is the o o+k/3z9 q8qjmsuq /srbject's density?

  A 200-N object floats with three-fourths of its vf ,v6d*j d(1:b4a th4yg7)pwdtuhthjolume beneath the surface of the w6d4,vtahby*4 )d ( 1g u:p7fhhwjtdjtater. What is the buoyant force on the object?

  A polar bear of mass 200 kg stands onhz. 3(b8 zld 4bx/epaqu)nst7h( pge , an ice floe 100 cm thick. What is the minimum areat8q(/4sx,(dab) 7b3peh ezhug nzpl. of 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 3.0 cm at 2.0 m/s. Find the flow dl8kh8xr swj:p1/: yu rate.

  Liquid flows through a 4 v/k wpe(ln43m.0 cm diameter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. Wm/e 3p(vlknw4 hat is the velocity in this restriction?

  Water flows at 12 m/s in a horizontal pipe wih3h x+o4 uiffov34n1 yth 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 pu.8aax *heo--zaps i 7zmp to supply a drinking fountain with 300 kPa, if the fountain is e .ah7opz xzs-ia8*a-30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a wa2rat ugff(), 7 h0f0uoqd -a7bjythb( ter storage tank that holds water at a depth of 15 m. At what rate will water flow out of o tbaf h7b()gyrd t,fj 20a0huuf7 -q(the hole?

  Water flows through a horizontal pipe of cross-sectional nl8,x2jwlh, je 4 u1mjmd*m txc41x,f 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 9 ihgx-j1nw3.c:e zsd take to pour 4.0 L of oil through a funnel with a neck 15 cm 1 n.ji9 -chxsedgz 3w: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 artery decreash5ujom9k+e 7l q s 0c3zkx/a3ded the radius by 10%. By how much would the prk9o07x a3z+ jhk sd5mulqce3 /essure 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 diameternxws1x0t hwcg/n5. n ( of tube B. If water risect(snhxwn / wxn.05g1s 24 cm in tube A, how high will it rise in tube B?

  The surface tension of water is 0.073 N/m. How high will water senzna5//8 uwq gs1he1:,te p rise in a capillary tube of diameter 1. s /nwaeqz,1e:eup1h5ntg 8/s2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass/kcz7ey9m x9ue. mxr: capillary tube with a 9xm7 xm /er.uek 9y:zcdiameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, and the water risesv) sh8j l-l,qi:ri*z s in the tube to 4.0 cm above t-q8s ir jliv:*z)ls,h he level of the pan. The surface tension in the liquid is lowered 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 rectangular fr u/3ll*u)w;oto6f zklame of length 0.120 m and width 0.600 m with a soap film formed within its confined area. If the s6uof;l tz) l/3uw*olk urface tension of soapy water is 0.0260 N/m, how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangk6mo28zq;cepa- 0ac r)is8w8o4ggrzl o w;2 dular 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 frame. Sca;rm-8; 26 we qcgkzz2wor4ld8og8 ops )ia0oapy 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?