Which of the following is the smallest unit of heaz znzb.osj,k(4*x9n,kg ob-6ji zr+h t energy?

  The amount of heat necessary to raise the temperature of 1 gram of water by df:vw5lc c 24s$1 \; ^{\circ}C$ is referred to as the

  The measure of the average kinetic energy of individual mu1+iq:zb;mh xolecules is referred to as; xhui+1zq:mb

  A cup of water is scooped up from a swimming pool of wateswszmg 28+y4e ht y4ewl.l* exm2 2a(pr. Compare the temperature T and the internal energy U of the water, y.yp+t lhgxm(wse z4a8ew*me22s 4l2in both the cup and the swimming pool.

  The internal energy of an id y;30 z kpga*oefbpkc(xvm3 0.eal gas depends on

  An ideal gas at STP is first compd if/j,.: 0 gjguye-)ee giw2iressed until its volume is half the initial volume, and then it is allowed to expand until its pressure is half the initial pressure. All of this is done while holding .ywuifie/0 ,)d gee2j- i:ggjthe temperature constant. If the initial internal energy of the gas is U, the final internal energy of the gas will be

  An ideal gas with internal energy U.n h sky1aa(rx*n(p o8 at $200 \; ^{\circ}C$ is heated to $400 \; ^{\circ}C$. Its internal energy then will be

  The reason ocean temperatures do not vary dras5 :*barph ywzzs:ofr3)t7dnim8 4 i- xtically is that

  It is a well-known fac*fy(ylcaud00vn.vf6 /quszu o 9l. h2t that water has a higher specific heat capacity than iron. Now, consider equal masses of water and irh /sluuo.fndl6u.90 f *yzy vq (avc20on that are initially in thermal equilibrium. The same amount of heat, 30 calories, is added to each. Which statement is true?

  A thermally isolated system is made up of a hot piece of alumiz,14y vwr8-vw ) kyfognum and a cold piece of copper; the aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than double that of copper. Which object experiences the greater magnitude gain or lv wg v-,y8rzf oyk41w)oss of heat during the time the system takes to reach thermal equilibrium?

  Phase changes occur

  The heat required to change 1p)qok gz 0w-na substance from the solid to the liquid state is referred to aswkq )pn0zgo1 - the

  The heat required to change a substance from the* lkbinxtfpxj)x+d9i )x l,:e7 e)m,i liquid to the vapor state is referred to a) le:m7ix dpnix9lje )xb,t* fik+ )x,s the

  If heat is added to a pure substance at a pq;i1j9f y9 bmyyu2(msteady rate,

  When a solid melts

  When a liquid freezesws;gb pvz.2p3

  When a liquid evaporatex ,rh,j:s z6rn.dts* is

  When a vapor condense,h 6ta+bye*n /- lyvgus

  In a cloud formation, water vapor condenses into water dro8:wdhq g/a4ok lm (xp7 prqk06plets which get bigger andkw(0a7mpxl8 4gdrkh:q /qop6 bigger until it rains. This will cause the temperature of the air in the clouds to

  Turning up the flame under a pan o /ax 26mdh37 c9bwmnmwf boiling water causes

  Equal masses of water atg6p)eoxelshy9hx5 ) 9fn 5djx s3*-ou $20 \; ^{\circ}C$ and $80 \; ^{\circ}C$ are mixed. What is the final temperature of the mixture?

  A chunk of ice ($T = -20 \; ^{\circ}C$) is added to a thermally insulated container of cold water ($T = 0 \; ^{\circ}C$). What happens in the container?

  The process whereby heat flows by means of mol;7lvdw *o:z wt68e yioecular collisions is referred to av6; zo:8 it 7wloyw*des

  By what primary heat transfer mechanism does one end of an iron bar become hot10sxt q;k 5wju when the other end is placed in a0 1 ;txwskuqj5 flame?

  On a cold day, a piece of metal feels much colder to the touch than a piece6cr cg.,d hbt):tu*o n of wood. This is due to the difference in which one of the fo g do ,hn*c:tbcu.6tr)llowing physical property?

  If you double the thickness o:)f(abs 0m fgwf a wall built from a homogeneous material, the rate of heat loss for a given temperature d0s :mfawf)g (bifference across the thickness will

  A layer of insulating mate+j7jxui mq9r c joxr77uo:l*0rial with thermal conductivity K is placed on a layer of another material of thermal conductivity 2K. The layers have equal thickness. What ismcix oo:*rl7u0qu xjj 77 9+rj the effective thermal conductivity of the composite sheet?

  The process whereby h krvrm: mlz/7.eat flows by the mass movement of molecules from one place to another ismk:/ z 7l.rrvm referred to as

  By what primary heat transfer mechanism is a pot 7r:n6ldqhn iafllf(xvo5) 6* of water heated on a stove?

  Convection can occurq)ap.1 cj jl6bob/wx)

  Which of the following best explains why sweating is importm/ r6ifu d5ir+ant to humans in maintaining suitardf uim65ri+/ ble body temperature?

  A spaceship is drifting in an environment;zcspcu7 s+i8jlv .7 / cwfqj1 where the acceleration of gravity is essentially zero. As the air on one side of the cabin is heated by an s87.c/jlzcijw cu 1+vf 7pq s;electric heater, what is true about the convection currents caused by this heating?

  Consider two neighboring rectangular houses built from t 4repm-- fssq.he same materials. One of the houses has twice the length, width, and height of the other. Under identical climatic conditions, what would be true about the rate that heat would haver4p.sf mq- s-e to be supplied to maintain the same inside temperature on a cold day? Compared to the small house, the larger house would need heat supplied at

  If the absolute temperature of a radiator is doubled, by what facto a3einfgp/y.93 y rf6hr does the radiatin3 gefa .fy/r9p y63hing power change?

  The process whereby heat flows in the absence of any medium iss4yq/i 5d pvyr 2 .+g3tyc-7oa-rruv l referred to as

  By what primary heat transfer mechanism does the.i kb+on twscar,0mc+a.c.3og5eq7 h Sun warm the Earth?

  1700 J of work is equivalent to how much x(- dqx9urcqmfn :o9m,9fc5 4 mmd5vyheat?

  16.5 kcal of heat is equivalent to how much w-o0i1ojd/ucwork?

  Gasoline yields $4.8 \times 10^{7} \; joules$ per kg when burned. The density of gasoline is approximately the same as that of water, and 1 gal = 3.8 L. How much energy does your car use on a trip of 100 mi if you get 25 mi per gallon?

  How much heat is needed to raise the temperature of 100 g hb2 x67toj3k0tw0 fhc of lead ($c = 0.11 \; kcal/kg \cdot ^{\circ}C$) by $15 \; ^{\circ}C$?

  If 40 kcal of heat is added to 2.0 kg of wz.8i qanxbqy28be0g,ater, what is the resulting temperature b2g,zeaqy8q0 .bx8i nchange?

  A 4.0-kg aluminum block is orxf*1e9s( 2,c (pn l:q-gidb*jws+h iex uo1beiginally at $10 \; ^{\circ}C$. If 160 kJ of heat is added to the block, what is its final temperature?

  150 kcal of heat raises the tem1 (d1ti as61rmzf6qu pperature of 2.0 kg of material by $400 ^{\circ}F$. What is the material's specific heat capacity?

  A person tries to heqc./--zn3* asasksll at up her bath water by adding 5.0 L of water at $80 \; ^{\circ}C$ to 60 L of water at $30 \; ^{\circ}C$. What is the final temperature of the water?

  A machine part consists of 0.10 kg of iron and 0.16 k,e*xisf tu ui;l63fn0/nu9n eg of copper. How much heat is added to the gear if the temperatureul 0if e 9uusn;,t 6fnie3/n*x increases by $35 \; ^{\circ}C$?

  50 g of lead ($c = 0.11 \; kcal/kg \cdot ^{\circ}C$) at $100 \; ^{\circ}C$ is put into 75 g of water at $0 \; ^{\circ}C$. What is the final temperature of the mixture?

  A 0.600-kg piece of metal is heated tog f9j;k -mgg5 yey3mng(4i2 n*w 8edfk $100 \; ^{\circ}C$ and placed in an aluminum can of mass 0.200-kg which contains 0.500 kg of water initially at $17.3 \; ^{\circ}C$. The final equilibrium temperature of the mixture is $20.2 \; ^{\circ}C$, what is the specific heat of the metal?

  A 0.10-kg piece of cop 4*p5qrdo 6 *psgdn(cwper, initially at $95 \; ^{\circ}C$, is dropped into 0.20 kg of water contained in a 0.28-kg aluminum can; the water and aluminum are initially at $15 \; ^{\circ}C$. What is the final temperature of the system?

  If 50 g of material a -mz tm7w2n/noe 6jx2mktb9v-t $100 \; ^{\circ}C$ is mixed with 100 g of water at $0 \; ^{\circ}C$, the final temperature is $40 \; ^{\circ}C$. What is the specific heat of the material?

  Two equal mass objects make up a system that is thermally isolated from it8::3w.rgiikqvn + - jpb yh3 s.+cgdbfs surroundings. One object harc-j+bp.h3nk+gs:3b w 8di. ifgv y:qs an initial temperature of $100 \; ^{\circ}C$ and the other has an initial temperature of $0 \; ^{\circ}C$. What is the equilibrium temperature of the system, assuming that no phase changes take place for either object? (The hot object has a specific heat capacity that is three times that of the cold object.)

  On his honeymoon, James Jouy,r rl*u k4l4yle attempted to explore the relationships between various forms of energy by measuring the rise o l lyrr,*44ukyf temperature of water which had fallen down a waterfall on Mount Blanc. What maximum temperature rise would one expect for a waterfall with a vertical drop of 20 m?

  The water flowing over Niagara Falls drops a distance of 50z91zvl h+wb-q3/e hs t m. Assuming that all the gravitational energqets/wz+1z3v h -l 9bhy is converted to thermal energy, by what temperature does the water rise?

  A 200-L electric wat2kfipvw (;h0hrpu,5 d er heater uses 2 kW. Assuming no heat loss, how long would it take to heat wf;25p, w(h rv0dpukh iater in this tank from $23 \; ^{\circ}C$ to $75 \; ^{\circ}C$?

  A 5000-W heater is used to heat water. How long will it t+ 0xu8/srxem.fj tji9d xk(g6ake to heat 20 kg of watexm rt(/j8jges 9 0u+xk.d fx6ir from $20 \; ^{\circ}C$ to $100 \; ^{\circ}C$?

  An aluminum kettle (mass 1v.8v:s,hgi;tsc15ym-gs zj; : y nsoj000 g, $c = 0.22 \; kcal/kg \cdot ^{\circ}C$) holds 400 g of pure water at $20 \; ^{\circ}C$. The kettle is placed on a 1000 W electric burner and heated to boiling. Assume that all the heat from the burner heats the kettle and its contents, and that a negligible amount of water evaporates before boiling begins. Calculate the amount of time required to bring the water to boil.

  In grinding a steel knife blade (specific hhhd+ v (a:9** lm,esa/ tppndb5v1wcr eat = $0.11 \; cal/g \cdot ^{\circ}C$), the metal can get as hot as $400 \; ^{\circ}C$. If the blade has a mass of 80 g, what is the minimum amount of water needed at $20 \; ^{\circ}C$ if the water is not to rise above the boiling point when the hot blade is quenched in it?

  How much heat must be removed from steam to cd ()p9pfdii:ehange it to liquid?

  Ice has a latent hea-/rg hd(kcp(ot of fusion of 80 kcal/kg. How much heat is required to melt 200 g of ic /dokgc(p-(r he?

  How much heat energy is needed to change a0t4yg pq4.lxk rujb+8kg;8y7+ drp v 10 kg of ice at $-20 \; ^{\circ}C$ to water at $50 \; ^{\circ}C$?

  How much heat needs to l4z*46 kctq:kcjhfuvu 6bt,jh1u;v5 be removed from 100 g of $85 \; ^{\circ}C$ water to make $-5 \; ^{\circ}C$ ice?

  The heat of fusion of ice is 80 kcal/i38 7gyjoj 50u 0ddgptkg. When 50 g of ice at $0 \; ^{\circ}C$ is added to 50 g of water at $25 \; ^{\circ}C$, what is the final temperature?

  Eight grams of water initialu kq x4w37*hj2nrb s/zly at $100 \; ^{\circ}C$ are poured into a cavity in a very large block of ice initially at $0 \; ^{\circ}C$. How many g of ice melt before thermal equilibrium is attained?

  A block of ice at $0 \; ^{\circ}C$ is added to a 150-g aluminum calorimeter cup that holds 200 g of water at $10 \; ^{\circ}C$. If all but 2.00 g of ice melt, what was the original mass of the block of ice?

  If 2.0 kg of water au1y)ms xt+ujz go4* 8qt $0 \; ^{\circ}C$ is to be vaporized, how much heat must be added?

  How much heat energy is needed to chas).c7b) hhnu ab96.xt xjxu71oz p ns:1ig -hpnge 10 kg of water at $50 \; ^{\circ}C$ to steam at $120 \; ^{\circ}C$?

  How much heat is requirfj9l *p/bm ,doed to change one gram of $0 \; ^{\circ}C$ ice to $120 \; ^{\circ}C$ steam?

  How much heat is required to change 100 g of 6a4bg( 8;w*t dho esiu$-10 \; ^{\circ}C$ ice to $150 \; ^{\circ}C$ steam?

  A person makes ice te 6exjlp e*xc: m )h 24wxaa-qj/8cuo(xa by adding ice to 1.8 kg of hot tea, initially at $80 \; ^{\circ}C$. How many kilograms of ice, initially at $0 \; ^{\circ}C$, are required to bring the mixture to $10 \; ^{\circ}C$?

  The heat of fusion of lead is 5.9 kcal/kg, and the heat of vaporization is 20vh5/s gi.qhu5ficd6g 1ge -s 27 kcal/kg, and its melting ihd 12g6vsf /5cqgh uiesg5 -.point is $328 \; ^{\circ}C$. How much heat is required to melt 50 g of lead initially at $23 \; ^{\circ}C$? (The specific heat of lead is $0.031 \; kcal/kg \cdot ^{\circ}C$)

  The thermal conductivity of6d abeld(ufl:tu1c/1,crm *,x:dg j1to) csg concrete is $0.8 \; W/m \cdot ^{\circ}C$ and the thermal conductivity of wood is $1.1 \; W/m \cdot ^{\circ}C$. How thick would a solid concrete wall have to be in order to have the same rate of flow through it as an 8-cm thick wall made of solid wood? (Assume both walls have the same surface area.)

  The thermal conductivity of aluminum isx5qi5*+c q wmkh-5vsdl sdl+ 1 twice that of brass. Two rods (one aluminum and the other brass) are joined together end to end in excellent thermal contact. The rods are of equal lengths and radii. The free end of th5wsq 1mqk *ixh+dl55+ldc-v se brass rod is maintained at $0 \; ^{\circ}C$ and the aluminum's free end is heated to $200 \; ^{\circ}C$. If no heat escapes from the sides of the rods, what is the temperature at the interface between the two metals?

  A window glass 0.50-+z1 3orvcf o*m/zor uv,ur-,v cm thick has dimensions of 3.0 m by 1.5 m. If the outside temom1 zocrrv*vu z,v/f, +r -u3operature is $-10 \; ^{\circ}C$ and the inside temperature $20 \; ^{\circ}C$, what is the rate of heat conduction through the window?

  A window glass 0.50-cm thick has dimensions of 3.0 m bx5ljnx e8:,rxp (6fti0egr1plg,3 vay 1.5 m. If the outside temperature isaexl1xpv f n86,g e30rtxgr5ijp (l,: $-10 \; ^{\circ}C$ and the inside temperature is $20 \; ^{\circ}C$, how much heat flows through the window in one hour by conduction only?

  How much heat will flow in 1.0 hour through a 2.)nd5kenj1;7zqf p inc .a4r1k 0 m x 2.0 m section of concrete 4k;f 7)1k jzrncnq1 ep. dnai5($k = 2.0 \times 10^{-4} \; kcal/s \cdot m \cdot ^{\circ}C$) 10 cm thick if the inside temperature is $21 \; ^{\circ}C$ and the outside temperature is $4 \; ^{\circ}C$?

  How long will it take to transv-ozd ;wb*t,ifer 1,000,000 cal of heat through a $2.0 \; m^{2}$ pane of 0.30 cm thick glass ($k = 2.0 \times 10^{-4} \; kcal/s \cdot m \cdot ^{\circ}C$) if the temperature differential is $10 \; ^{\circ}C$?

  What is the outside temperature if 4000 kcal of heat is lost )rnyf a m jhlx;k1 4e6pbw7;v.through a $4.0 \; m^{2}$ pane of 0.30 cm thick glass ($k = 2.0 \times 10^{-4} \; kcal/s \cdot m \cdot ^{\circ}C$) in one hour from a house kept at $20 \; ^{\circ}C$?

  In an electric furnace used for re1 isn4d5 -ellzm/541gfdy y oafining steel, the temperature is monitored by measuring the radiant poynszd 15 lmo4g5-dl ayf1/ie 4wer emitted through a small hole of area $0.5 \; cm^{2}$. The furnace acts like a blackbody radiator. If it is to be maintained at a temperature of $1650 \; ^{\circ}C$, at what level should the power radiated through the hole be maintained?

  At what rate is the human body radiating energy when it yhn fx ds5fm8nu,-y(x 5 *ml0ois at $33 \; ^{\circ}C$? Take the body surface area to be $1.4 \; m^{2}$, and approximate the body as a blackbody.

  What temperature exists inside a nhq/3--mxvrt solar collector (effective collection area of $15 \; m^{2}$) on a bright sunny day when the outside temperature is $+20 \; ^{\circ}C$? Assume that the collector is thermally insulated, that the Sun radiates the collector with a power per unit area of $600 \; W/m^{2}$, and that the collector acts as a perfect blackbody.