1. True or false. The mass of a closed system cannot change.
2. True or false. Fahrenheit scale cannot be used in thermodynamics relations.
3. True or false. An extensive property can be a function of time and location.
4. True or false. If a system is at steady state, then the density is uniform throughout the system.
5. True or false. All modes of heat transfer between two bodies must occur when the two bodies are in contact.
6. True or false. The volume of a closed system cannot change.
7. True or false. Fahrenheit scale is an absolute temperature scale in English units.
8. True or false. A system is at steady state if no more than one of its properties changes with time.
Expert Answer
CommentANSWER:1.TRUEThe system in which mass cannot transfer from system to surrounding is called closed system.2. TRUEAll the thermodynamic relation is based on absolute zero temperature and all relation is based on the Kelvin scale3. FALSEThe extensive property is a function of mass.4.FALSEIn the steady state, the system state is constant with respect to time.5.FALSEIn radiation heat transfer, there is no need to contact between two bodies.6.FALSEThe volume of the closed system can change but mass cannot change.7.FALSEKelvin scale is an absolute temperature scale.8.FALSEA system is at steady state if "no any" of its properties change with time.
Expert Answer
1) A control volume is a system that
(a) always contains the same matter. (b) allows a transfer of matter across its boundary. (c) does not interact in any way with its surroundings. (d) always has a constant volume.
2. A system is at steady state if
(a) none of its properties changes with time. (b) none of its properties changes with location within the system. (c) none of its properties changes with time or with location within the system. (d) none of the above.
5. When a system is isolated,
(a) its mass remains constant. (b) its temperature may change. (c) its pressure may change. (d) all of the above.
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