The three common pha pt ebyob00i+8ses of matter are

  Density is

  Substance A has a densi ,ialgtwg8y h 6z:xth70ph 1*6icz5bbty 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 pres1bigbqddul 73+s/ x0-6 adx hrsure?

  Consider three drinking glasses. dtk1l*y4gt s q;2uo.x All three 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 bottom, and so holds more water than A. Glass C is narrowet4 ;1kuy. 2oqsg*lxtdr 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 thqc4jyjbnz y5. 9h4fx7 e pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens to the absolddr d8f c,m78d r0yh+mute pressure at the bot c,+ydrr 7d0dd8h mm8ftom of a pool?

  You are originally 1.0 m beneath tusi+cf2bvl0z;p -8 hzlsb i 67he surface of a pool. If you dive to 2.0 m beneath the surface, what happens to the absolute pressure on -l +0 v bfiiu7hzz 8;l2sbcps6you?

State Pascal's princi* dho/djxn+7g ple.

State Archimedes' principle.pm6rcy )ioq/h+)nfvx.gpwt13 +u / cw

  $50 \; cm^{3}$ 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 4d;zpp 9jryeusu/n/ :water of constant density, what happens to p9y:j uu;dsr/np z/4ethe buoyant force on it?

  Salt water has greater density than fresh water. A boatv/ 6n- 1wn qojdfces+f6fk,-p g,:p zy floats in both fresh water and in salt water. Where is the bup po cf gqn-z:e/-,w,6jk+1v dnysff 6oyant force greater on the boat?

  Salt water is more dense than fresh water. A ship floats in both fresh1msumxh;g 4 /b water anugxm1sbh/m4 ; d 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 jzeje n7eo3f()h, 9lipool of mercury. Where is the buoyant force on the bale nojhli)z 397j, (efel greater?

  A 10-kg piece of aluminum sits at the bbx2*cl g73 3+lp03wijm3;tsio vlf h w-a gw8fottom of a lake, right next to a 10-kg piece of lead. Which has the greater buoyant force on it? x3gsi8ot + hc; ml7wp vb-3jwf233g*w0flal i

  A piece of iron rests on top of a piece of wood floatin t 5cg7h )gv2c(w7zhgsko3w7;uy:vn o st5 d9rg in a bathtub. If the iron ist ( ;:swvt s7cr3vzw57 y g2k docn)7u9ggh5oh removed from the wood, what happens to the water level in the tub?

  A piece of wood is floating in a bathtub. A s2)wz7lnc*k uv)zg,dt * -rsfaecond 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 icrv7wznag*)* ) ts,kfldu 2- zn the water, what happens to the water level in the tub?

  Water flows through a pipe..z9e xp*gwq +k The diameter of the pipe at point B is larger than at point A. .pw9x eqgzk+* Where is the speed of the water greater?

  An ideal fluid flowsf;a2co( wlkh4 at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radiu4a;lwkh ( o2fcs, what is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the j0ayoz 1 eva; /0l3qi f.gqww;pipe narrows to half its ai/w 1jzyea. w;3o; gf0qqvl0 original radius, what is the flow speed in the narrower section?

State Bernoulli's principlk.(o y+l;he i fx/rzqzy;+i5 i )cuhd+e.

  Which one of the following is associate xk0z0xmg ie /;v-u u8aco0sr0d with the law of conservation of energy in fluid o0u x-00/;sazci0g rumx8v kes?

  As the speed of a movinn x,2mexk7a7 xg fluid increases, the pressure in the fluid

  Water flows through a pipe. The diameter of theka5r/1o8- koyro-v kk pipe at point B is larger than at point A. Where is the water preyo58or-k k-1kok/r vassure greatest?

  When you blow some air above a paper strip, the paper rises. Than;(t plm2 sxu35 as+ nrz8wx+is is because

  A sky diver falls through the air at te ;ynwhht :r5k:/mehlngc7-w /rminal velocity. The force of air resistance on himt /-h/wnkc5 m;:e hy:grn7lwh is

  Two Styrofoam balls, of radii R a7:gb rcfl, +;bj6 c :.aymxro28xzdetnd 2R, are released simultaneously from a tall tower. Which will reach t+cfclob:6; yz x,:.dbe 2 mtarr gx87jhe ground first?

  When a small spherical rock of radius rp+o z-i6akf d u4l+vc+ falls through water, it experiences a drd ++a vi6p+u4o c-lfkzag 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 our).u8 + btcir.aq+ djn the flow of fluid through a narrow pipe? That is, if you made a 10% change in each of the quantities below, which would caus rtb )jqc.+.+iu 8daure the greatest change in the flow rate?

  Two horizontal pipes are the same length, but igz2; 4 9d .wevm, rjyf3qd6hcpipe 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 pd.h;4zr9 mq,w2yjdv 3 fi e6gcipes. If the flow rate in pipe A is Q, what is the flow rate in pipe B?

  Two horizontal pipes have the same d k-x,qx:juu ;c(ktn+ 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 isxj-;:nuk tx+c (uqkd, the flow rate in pipe A?

  When soup gets cold, it often tastes greasy. This "greasy" taste se,ybic;tl 6o8 pems 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 readily explained in termsily,8oc ;6 bpt of

  When a tube of diameter d is placed in water, the water rises to a heig9q0ownr -/jj8jj(7m;yur b lm pvf+)rht h. If th+j7qrr yj-b0lr()npv98 ofw/umj;j m e diameter were half as great, how high would the water rise?

  Certain insects, such as the water bug, are dqe:z x 043fa (akxs gimp0(3ysufficiently 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 dimensiona00s(ka33mg(ei fx:yq xzp 4d s. That is, bug B is twice as long, twice as wide, etc. What is the weight of bug B?

  Certain insects, such as thexb6iwebb1, - ;uh8jx;jfzy0 n water bug, are 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 big as bug A in every dimension. That is, bug B is twice as long, twice as wide, etc. What is the maximum 8 ifz ;bhju1 xe6 0;,yjn-wxbbupward force on the feet of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 co udk2-/d7 qrp)lvdn (m x 4.00 cm has a mass of 30.0 g. What / ok ddp- r)n(ld2vqu7is its density?

  A liquid has a specific gravity of 0.357. What2pt3q,f*ai, in pbc0rmlv m pf-+p/w- is its density?

  A brick weighs 50.0 N, and measures 30.0 cm x 10.0 cm x c.p j++yodl7ca v2da: 4.00 cm. What is the maximum pr j2.oycl7vd+dc aa+p:essure it can exert on a horizontal surface?

  A person weighing 900 N is standinxbyq7+9vpk 8+uzeq/ r baew:3g on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absol sk,s6c2qpd 8 kqau8nhap/wqsw/x)5 4ute) must a submarine withstand at a depth of 120.0 m in thepssnda6c5w4 qsq2/k,x8p/ 8ha uwk) q ocean?

  A circular window of 30 cm diameter in a submarine can withstand a max;ql xs8 j6vgx2imum forcexqsg82xvl 6j; 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 absol kj0)qsl+.f msute pressure is 300 kPa?

  What is the gauge pressure at a lon o(+ t 7-w1yja:jtlttcation 15.0 m below the surface of sea? (The denst+at(jjlwyt: o7n-t 1 ity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0. gpu4xywvvrvr:/*9n4qq 8b l:i e +mm m below the surface of sea? (The d/nylm pv4w9:mgu8. rv+xq re i*4b qv:ensity of seawater is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on thj0hf2 -nwuo-z e small piston of a hydraulic machine. The small piston - -ujzfw2o0hn has 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 the la(je7yla / nv,,dhqrg /rge piston has a r ,dhr/jve,q(yag/ 7nladius 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 x.u -gjig1+ aiby a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diamet.guji+g- xi1 aer piston to accomplish this?

  The small piston of a hydraulic lift has a diameter of 8.0-h+9ujb+kxf8ds btmy (w)uwlpi 8 92w cm, and its large piston has a diameter of 40 cm. The lift rais29+uhk)-9s+wbimp wy bt( j8 wu8xldfes 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.tzj+ d q1w,dg0 90rytb What is the buoyant force of the water?,bd 9j0t0tzg +ywdqr1

  An object has a volufk j papw67+ w ek7t,gd23mxp+me of $4.0 \; m^{3}$ 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)igh0u,2gwibh 82phv ing while submerged in water. What is the tension in the strgw 8iivbpg 2,2uh )hh0ing? (The specific gravity of iron is 7.86.)

  If the density of goldva4s +e k/o3yql,yl. g 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 (dens; +i3 nvt-pbdad r)vx:ity = $7.8 \times 10^3 \; kg/m^{3}$) 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 6.8lmyu;br/+ q8e cd 7s 2fu,tzz.6 N when it is immersed in water. Whatqz ;,df esc /zbl7m2u+8r.uty is the specific gravity of the object?

  A container of water is:rwcio8:4pw1 sfpg:o placed on a scale, and the scale reads 120 g. Now a 20-g piece of copper (specific gravity = 8.9) is suspended from a thread and loweroi :p:1w rfpcw:g48s oed into the water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum with a m l-nkwz3czauz1 8 :gq)ass 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 barely float i)j:o 7g 6o;2tt1fj6eybkaz9aetwe-c n waterjta-) wz c2f7:g6eobk 1j;oaet9t6 ye. What is its mass?

  A rectangular box of negligible mass measures 5.0 m long, 1.0 m jlnpf * e+n9-:wot8on wide, and 0.50 m high. How many kilograms of mass can be loaded onto the 9e t+nl8-w:opfjn*on 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 + lrw(;j fro4sthe water. The weight of the displac+f rj(lo;w4sred water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneath the srkm)q(lm(35ijpq/ oiurface. What is(3qi jril k5o)qm(p/m the object's density?

  A 200-N object floats with three-fourths of its volume beneath thq5;4zt yein5hpw uair3;j1v 2 e surface of the water. What is4 zyp;uva32 5h1wqjni tr5e;i the buoyant force on the object?

  A polar bear of mass 200 kg stands on an ice f o(d cz,i5z;puloe 100 cm thick. What is the minimum area of the floe that will just support the bear in s5oz c(pz;du, ialtwater of specific gravity 1.03? The specific gravity of ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm atv6f)gcf+m wn3 vykhh y,(b(- z 2.0 m/s. Find the flow rate.

  Liquid flows through a 4.0 cm diameter pipe at 17dzi 7 3hdw3td.0 m/s. There is a 2.0 cm diameter restriction in the lzh w3d3i 7d7tdine. What is the velocity in this restriction?

  Water flows at 12 m/s jfy( 9-z yn-,v -djtkjin 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 drinko l11v . tvyfbp)mj.d-ing fountain with 300 l1jp1 vb t vm).fy.-dokPa, if the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water stor /kf hk(u a. s4n*pxwgg-*cml,age tank that holds water at a depth*(4g.hp-as /ckwufm xn,g*lk of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-secgnmo2w-2 uy wun ;k,/etional 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 take(,r5sk pck ,sq to pour 4.0 L of o,qs(ckr, psk 5il 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 the funnel.

  Suppose that the build-up of yw7z6 q cc8+aufatty 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 increasec6y+ zw8acu7q d to maintain a constant blood flow?

  Two narrow tubes are placed in a pan of wateroym0c+ j n)q.q. Tube A has twice the diameter of tube B. If water rises 24 cm in tube A, how high will it rise in tube B.nq+ jom cy)q0?

  The surface tension of water is 0.0u hzl2/vw:2 1wtuph x )ee2g:fdv ;xk973 N/m. How high will water rise in a capillary tube of 1:tv2v2/d efx 9;)h2:uwugxz plk ew hdiameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass capillgh,7gj m1z,/,enh0 mrhhiy9,oe2uljary tube with a diameuz,gh hnj0h ,m,eierym,2/ olh 179gj ter of
0.50 mm?

  A narrow tube is placed vertica 7u8bw-p 07 r4nq y1fzrqikd3tlly in a pan of water, 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. What happens to the height of the liquid column in the tub zq wnk 8i1-3d7brpu 4fyq0tr7e?

  Consider a rectangular frame of length 0.120 m and widt cxqxnvh ;i0;r 1+sul zu(,un4h 0.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, nu u n0h,4+su;; riz(vxlqcx1how much force does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm+p9w. rbw 2but, 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.t w uprwb.9+b2026 N/m. How much work is required to move the adjustable long side so that the frame is 12 cm square?