The three common phases of ma. scmcaruemyr4-37 fnp-h0s e d exy.o)9+d0m tter are

  Density is

  Substance A has a density ra m:jvv 4 +(gf4qkx.kof $3.0 \; g/cm^{3}$ 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 o jlv 2meo,j)3u;/ t56oscacpkf pressure?

  Consider three drinking glasses. All three h:)qqtz*lwum( c;h m: fave 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 ll(mqwc:u;fm* )ht z:qess water than A. Which glass has the greatest liquid pressure at the bottom?

  What is the difference b61d ,5xp efo fgbe99taetween the pressures inside and outside a tire called?

  When atmospheric pressure changes, what happens togs ms mz+:+s;bcipq(o xu7:042cgmvb the absolute pressure at the bottom of a poolcm b g: (0 2zp4umsm;oqi+sv7:b+xsc g?

  You are originally 1.0 m beneath the surdaq o k-l9a bu3s rqya 5:l(y) 9x8wy2aqse;6oface of a pool. If you dive to 2.0 m beneath the su(ql-8aw 2s e l99a)dqsb qx uao3;ok:6ar5 yyyrface, what happens to the absolute pressure on you?

State Pascal's principle;-g lr30q3 6s gwokj ldcjt)x:.

State Archimedes' prnf 2goph:3, *wuu(.hoznm d3gwt p2 qb6trd0+inciple.

  $50 \; cm^{3}$ 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 hapw.n +f7 ctbb5lfbi 74 pu+lp/ppens to the buoyant force oflb+l4c7nf5 pbt .u/pipb+ 7wn it?

  Salt water has greater density t. fmj)njl 7k;+pyrhe +han fresh water. A boat floats in both fresh water and in salt water. Where is the buoyant force greater on the boa )hj7 m +;+y.pkrjelfnt?

  Salt water is more dense than fresh water. A ship floats in 15/8. mkrk2yp peyc mtjme:r;both fresh water and salt waterepy. c2k rtm/y1;re8jmmp:k 5 . 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 mercury. Where i t,jvygd)8 ybz0x p39ss the buoyant force on the ball greatery 3p0 jxgzy )vst,8db9?

  A 10-kg piece of aluminum sits at the bottom ofb q+w-0gkmyba tp/89yq ezr yw8 *15brbqw;1g a lake, right next to a 10-kg piece of lead. Which has the gbqg 1-y80eq+w9b/*mp 1zy5r ;tygb 8qrwa kbw reater buoyant force on it?

  A piece of iron rests on to+zq:n+o -.r*driaf hd p of a piece of wood floating in a bathtub. If the iron is removed from the wood, what happonf q+r*zd-i+ah: .rd ens to the water level in the tub?

  A piece of wood is floating in a bathtub. A second piece of wood sits on top glil9lcd2wq 1d:3 e7 gof the first piece, and does d:cl7 q1gleilwg92d 3 not touch 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 diameter of the pipe at po: -s4.xrnn ysgus y,o6int B is larger than at point A. Whr6yug 4. snn -o,:xyssere is the speed of the water greater?

  An ideal fluid flows at 12 m/s in a horizontal pipe. If the pipe w:b/ ybodt o -mg:y2:zh.ajdq/8 qs fn3idens to twice its original radius, 2 m/g:q by hybso/:af3jqtdd8: -.nzowhat is the flow speed in the wider section?

  An ideal fluid flows at 12 m/s in a horizontalazvc s:a 4*1ia pipe. If the pipe narrows to half its original ra4vic * :za1asadius, what is the flow speed in the narrower section?

State Bernoulli's pr;q 7/c7r4a n0lffh iwv;vsu 2sinciple.

  Which one of the following is associated with the law of conser250velybj -tx.m*nb f,y upv4vation of energy in flxnvt5.byp*mjlu0 bfve ,4-2 yuids?

  As the speed of a moving fluid i8t+ob8i0 ji irncreases, the pressure in the fluid

  Water flows through a pipe. The diameter of the0ch*nnr8ywpg 2 w,7b6 mu(-;mj: jn 6ld etkcn pipe at point B is larger than at point A. Where is the waterjnk:nyt cj0 u;n(wd r6gc * 6whb7emp8l,n -m2 pressure greatest?

  When you blow some air above a paper stqo28-0 a jyh vror*blvype )pe2+3pe-rip, the paper rises. This is because

  A sky diver falls through the air at terminal velocity. The force of air resisv-k; 2m)vqsf 5h:nfdh tance5m-sk)fhv:qdvn ;f h2 on him is

  Two Styrofoam balls, of radii R and 2R, are a 1cyq(mq;cu, released simultaneously from a tall tower. Which will reach the ground cq,(amq 1c uy;first?

  When a small spherical rock of radius r falls through wa;c*zzgk(g)1uo nnz 7fk2 krg/ ter, it experiences a dr1kg (/zgcn kz7o) ku;fg2*nz rag 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 eb,.j oost1pm8w htc58ffect on the 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 greate1.8 h5 ,jobp8mostwct st change in the flow rate?

  Two horizontal pipes are the same ler-i ;f0 c(b:2yt eetbzngth, but 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 pipeebt(f;t r-2c:e biy0zs. 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 dgb;gcfaf i)axq mp4w 5*92u1is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of 4*axfpqc1f;ib52 9dwu gm)ga the pipes. If the flow rate in pipe B is Q, what is the flow rate in pipe A?

  When soup gets cold,n8 9 0-h.spqdamtg6;4tbad oo it often 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 readily explained in terms ofd4ta 80;h b mq-9at nogsdo6p.

  When a tube of diameter d is placed in water, thg,fr4* smt 4 ao dgk54s+5otcce water rises to a height h. If the diameter were ccoat4sfktg*o4 ,5 m +g45s rdhalf as great, how high would the water rise?

  Certain insects, such as the water bug, are sufficiently liawse b.3iiz wpu)w76dl1 r )3qghtweight that they can run on top of water without breaking the surface tension. Water bug A has weight W. Water bug B isi w)ws36rbwpdalq.1 7u e3i)z 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 qv hk 5c(4/aff q4ii6dbug, 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 upward force on the feetv6ca5qi ff(hi4 /dkq4 of bug B?

  A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm has a mas+ lwyn1 brz9htpqr2u zk/oo- e.ke;;+s of 30.0 g. zlr/kozrbee21pnuqk ;+ +9w -y.h;o tWhat is its density?

  A liquid has a specific gravity of 0.357. What is*0ahpsvy-w n e77 jtj/ its density?

  A brick weighs 50.0 N,jq sp7 xcle:) k3*e;vfsff (3l and measures 30.0 cm x 10.0 cm x 4.00 cm. What is the maximum pressure it can exert on a horizontall : f3l pce7s*f )(jqs3;evxkf surface?

  A person weighing 900 N is standing 1v 6.*ofs iv (8tanfqzmc25fl on snowshoes. Each snowshoe has area $2500 \; cm^{2}$. What is the pressure on the snow?

  How much pressure (absolute) must a submarine withstand at a depth of 120.0 *n.9svjf;fj on-wj t:m in*sf. jjjn-vo;t9 wf:n the ocean?

  A circular window of 30 cm diameter+0m yr jr8eww)j5c*h h in a submarine can withstand a maximum force om+0h 5w) jhje*cw8ryrf $5.20 \times 10^{5} \; N$. What is the maximum depth in a lake to which the submarine can go without damaging the window?

  What is the gauge pr 8vm ).yvl1s h c406dgz-rkcgkessure if the absolute pressure is 300 kPa?

  What is the gauge pres7 p2p3nlfse4cnn. q .hsure at a location 15.0 m below the surface of sea? (The density of seawater 2p .3nq 7e .cnsl4fnhpis $1.03 \times 10^3 \; kg/m^{3}$.)

  What is the absolute pressure at a location 15.0 m below the suww4 3lzv4g3 0inkkww 3rface of sea? (The density of seawater w ww3inkgz 34k0lvw34is $1.03 \times 10^3 \; kg/m^{3}$.)

  A 500-N weight sits on the small piston of a hydraulic machine. The small pis hml5 oer2/mc2ton has area mom2/ce52hlr $2.0 \; cm^{2}$. 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 tez8(fd: ute7;n9koax he large piston has a rad8d (ux9k o n7aez:;tefius 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 hydraw 1 f,sogzw21qj6lbx 4injv9 p;:+le uulic piston. What force needs to be applied to a 5.0 cm diameter piston t fwl :4j9osq1u6 ;npb lgj+we12xv z,io accomplish this?

  The small piston of a hydraulic liftp al*4 (o;etgi has a diameter of 8.0 cm, and its large piston has a diameter of 40 cm. The lift raises a load ofe4 gltio(p*a ; 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 buoyant forcypslson( 7fb 2pt9j 2,e of the9 t(2npl2s bs,y jp7fo water?

  An object has a volume 49xu(cbrt nwhw 69uf(p+fw a(b9zyz b 8gr.3lof $4.0 \; m^{3}$ and weighs 40,000 N. What will its weight be in water?

  A 4.00-kg cylinder of solid iron is supported by xed 1b*,vvc 8aa string while submerged in water. Whedv8 vb 1,*axcat is the tension in the string? (The specific gravity of iron is 7.86.)

  If the density of gold is/ /z0 8,ur it7dd3cok tdhajs0 $19.3 \times 10^3 kg/m^{3}$, what buoyant force does a 0.60-kg gold crown experience when it is immersed in water?

  A crane lifts a steel subm5 m)isi kr+hx-5azow 9ua d85uarine (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 whx8 )6vz )qtw y+7pvzeqen it is immersed in water. What is the specifyqwx) v7v6ep qzz8+)tic gravity of the object?

  A container of water is plhe ,qbk. ;qlspy 5qzfiv7 t;fbc/kk y+482tg1aced 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 lowered into th,5 b1fqf 7k8.bckt; q tv/yk ig2;elhsq+ypz4e water, not touching
the bottom of the container. What will the scale now read?

  A piece of aluminum w jv j.g )k:lngta5-i:8:gs hqoith 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 c2*v9cvuor ph;(bfaj0 m will just barely float in water. What is its massuh bp9 vvof20cjra ;*(?

  A rectangular box of negligible mass measures 5.0pzhgw-4 6f7ot,pecy gp)mmc:ih+ 4,b m long, 1.0 m wide, and 0.50 m high. How many kilograms of mass can be loaded onto the box before it sinks ip4i+hzocm -)g bcwh, e46f, m:g ptyp7n 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 water. The; e npi 0xl489fif6q6k bkji3x weign3e9kf6 blj 8i4ixpxqf0;6k i ht of the displaced water is 2000 N. What is the weight of the object?

  A solid object floats in water with three-fourths of its volume beneat 7q0dcqjc+)i ufsw )q,h the surface. What is the obje7)scw0i ,uqqd+ qc) fjct's density?

  A 200-N object floats with three-fourths of its volume beneath the surface ryx2 0 1e*7qwzyx4fhlof the water. What is the buoy4fzx hql71y02ex rw*y ant force on the object?

  A polar bear of mass 200 k fl qw6a0d:i)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 :f0)k w q6alidof ice is 0.98.

  Liquid flows through a pipe of diameter 3.0 cm at 2.0 m/s. Find the flow kfj lp02 )pofog1 n8h)rate.

  Liquid flows through a 4.0 cm dia lt zyw3/8yy;zmeter pipe at 1.0 m/s. There is a 2.0 cm diameter restriction in the line. What is the velocity in this reszy;z3yy w/t 8ltriction?

  Water flows at 12 m/s in a hoxh.c0 d7q,d tns -zsq+rizontal 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 ta fzg zz6mjc.p5xyb 64.ke for a pump to supply a drinking fountain with 300 kPa, if .z6 z.cmyjpzfb6xg5 4the fountain is 30.0 m above the pump?

  A hole of radius 1.0 mm occurs in the bottom of a water s. wo,zn5h1 oo -b-dhuutorage tank that holds water at a depthn5-bu 1huoh -ood .z,w of 15 m. At what rate will water flow out of the hole?

  Water flows through a horizontal pipe of cross-sectiona:/khmyj5 l*dk l 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- j x*.jy/b 3w0-17rjbwv jexnws. 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 the upper part r w ej01b.jbnjx3 7vy/-j*wwxof the funnel.

  Suppose that the build-up of fatty tissue on the wall of an artery yn8y0o6hs zj (decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?8zyh 6osy( nj0

  Two narrow tubes are placed in a pan o(3th7*y n d,vxjw s(mmf water. Tube A has twice the diameter of tube (,s3n (dwxmymht j*v7B. If water rises 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 rise in a ca,9.fryto a3 3cechtd3 pillary tube c3hta3 yd o3e.t 9fc,rof diameter 1.2 mm?

  232

  To what height would water at 0 degree Celsius rise in a glass caqf6gbm3; hk h*pillary tube withhmb*gfh q3k6; a diameter of
0.50 mm?

  A narrow tube is placed vertically in a pan of water, auz(ze/ xfs:b5nd 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 o(sue5/ b:xz zfne-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 frame of length 0.120 m and width 07s;fyod k oxka4 co :gu,4q:a5.600 m with a soap film formed within its confined area. If the surface tension of soapy water is 0.0260 N/m, how much forc qsacka 7o:xok , :;4fod4ygu5e does the soap film exert on the 0.600 m side?

  An adjustable rectangular frame has length 12 cm and width 5 cm, and is buikn0sz*z abj (+lt 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/m. How much work is required to move the adjustable long +za*n k(jzbs 0side so that the frame is 12 cm square?