Term
Thermal conductivities of glass and fiberglass are dramatically different because of ________________
thermal conductivity of air. |
|
Definition
|
|
Term
Several days after a snowstorm, the roof on Jones' house is uniformly covered with snow,
whereas on Smith's house next door the snow has completely melted off. A likely reason
for this is that Jones' house has ____________ roof insulation than does Smith's. |
|
Definition
|
|
Term
(T/F)In a composite slab made of two layers of different materials, the heat flow rate throught the
slab is the sum of the heat flow rates through individual layers. |
|
Definition
|
|
Term
The insulating value of a double-glazed window may ____________ when the spacing is made to
great because of the ____________ of air in the space between the two panes of glass. |
|
Definition
|
|
Term
(T/F)A constant-volume gas thermometer measures the pressure of the gas and converts it into
absolute temperature in Kelvins. |
|
Definition
|
|
Term
A constant-volume gas thermometer measures the (absolute/gauge) pressure of the gas, rather than
its (absolute/gauge) pressure, and is more similar to a barometer than to a pressure gauge in this
respect. |
|
Definition
|
|
Term
| A properly functioning thermometer measures (the object / its own) temperature. |
|
Definition
|
|
Term
A thermometer put in direct sunlight is likely to show temperature _____________ than the
temperature of air around the thermometer. |
|
Definition
|
|
Term
| For a good heat radiator it is advantageous to have a __________ value of ____________ of the surface. |
|
Definition
|
|
Term
In the van der Walls equation of state,
(p +
an2
V2
)(V - nb) = nRT, the term nb accounts for the fact that a real gas occupies ___________ volume than an
ideal gas at the same temperature and pressure. |
|
Definition
|
|
Term
| W is positive when the work is done _______ the system, and not _________ the system. |
|
Definition
| by the system, not on the system |
|
|
Term
| A quasi-static process, which begins and ends at the same temperature, is not necessarily _________________. |
|
Definition
|
|
Term
(T/F) If two identical gas-cylinder systems are taken from the same initial state to the same final state, the
difference between the heat obtained by a given system and the work done by this system is necessarily
the same for the two systems. |
|
Definition
|
|
Term
| (T/F)The equation Q = ΔU+W applies to both reversible and irreversible processes. |
|
Definition
|
|
Term
To say that Q is (positive/negative) in some process is the same as saying that the system obtains from the outside
world a net positive amount of energy due to (temperature/volume/pressure) difference alone. |
|
Definition
|
|
Term
| If ice and water have been together in a glass for a long time, they both should have a temperature of _________________. |
|
Definition
|
|
Term
(T/F)If a system goes from state 1 to state 2 in any quasi-static process, the molar specific heat, C, is
calculated as C = ΔU/(nΔT), where ΔU and ΔT are, respectively, the differences in the internal energy
and temperature between the two states and n is the number of moles in the gas. |
|
Definition
|
|
Term
In the van der Walls equation of state,
(p +
an2
V2
)(V - nb) = nRT, the term an2/V2 is introduced to account for ________________________. |
|
Definition
| Attractive interaction between gas molecules |
|
|
Term
According to the kinetic theory of the ideal gas, if a molecule doubles its mass (while all other
parameters remain the same), its contribution to the gas pressure ________________. |
|
Definition
|
|
Term
| Isothermal contraction of an ideal gas can be described by the equation _____________. |
|
Definition
|
|
Term
(T/F) According to the kinetic theory of the ideal gas, if all molecules of the gas double their speeds and the
length of the box containing the gas doubles as well (while other dimensions of the box and the mass of
the gas molecules remain the same), the pressure of the gas remains unchanged. |
|
Definition
|
|
Term
| (T/f)Transfer of heat from a warmer to cooler object is an irreversible process. |
|
Definition
|
|
Term
Molar specific heat of a gas at constant volume can be calculated as R/2 times the number of activated
________________ of a molecule of the gas, where R is the universal gas constant. |
|
Definition
|
|
Term
(T/F) In Quasi-Static Adiabatic Expansion of ideal gas, the internal enargy of the gas is converted into work
with 100% efficiency . |
|
Definition
|
|
Term
Colder water supplied to the cooling system of a power plant (which uses natural gas as the fuel) is
expected to ________________ of the power plant. |
|
Definition
|
|
Term
(T/F)The amount of work done by a heat engine in one Carnot cycle is the sum of works during the adiabatic
expansion and adiabatic contraction. |
|
Definition
|
|
Term
A gas of very complicated molecules each with many degrees of freedom would have its specific heat
ratio, γ, _________________. |
|
Definition
|
|
Term
When a heat engine works between two reservoirs with temperatures Th and Tc, the amount of work ___________, but the ratio of the work done to the heat obtained from the hot
reservoir is ________________ by Th and Tc. |
|
Definition
| Can Differ, Completely Defined |
|
|
Term
| In the Carnot cycle of a refrigerator, the stage when heat is extracted from the cold reservoir is _______________. |
|
Definition
|
|
Term
When an ideal gas is expanded in volume at constant pressure, the average kinetic energy of the gas
molecules ________________. |
|
Definition
|
|
Term
(T/F)If the temperture of the hot reservoir stays unchanged, COP of a refrigerator increases when the
temperature cold reservoir decreases. |
|
Definition
| False. COP decreases when the temp of cold reservoir decreases. |
|
|
Term
| (T/F)A refrigerator left in a kitchen with an open door would not cool the air in the kitchen in the long run. |
|
Definition
|
|
Term
| The coefficient of performance of a refrigerator (is/is not) not limited from above. |
|
Definition
|
|
Term
A Carnot-cycle heat pump uses work W and delivers heat Q into a house, where W is always ________________
Q. |
|
Definition
|
|
Term
(T/f) In quasi-static isothermal expansion of ideal gas 100% of heat supplied to the gas is converted into
work. |
|
Definition
|
|
Term
|
Definition
| Slow change where the system is always in thermodynamic equilibrium during the change. (The processes is reversible as shown on a PV-Diagram) |
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