What mode of heat transfer does not satisfy the thermodynamic definition of heat transfer and why?
What will be an ideal response?
Convection heat transfer does not rigorously satisfy the thermodynamic concept of heat or heat transfer because there is not a precise boundary across which heat can flow and there is mass transfer mingled with the process.
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Dark matter ____
a. is homogenously distributed through the Universe b. began clumping due to tiny variations in density at the moment of the big bang c. began clumping due to large variations in the distribution of matter and antimatter d. is isotropically distributed through the Universe e. began clumping due to the variations in the distribution of baryonic matter
An object that completes 10 vibrations in 20 seconds has a frequency of
A) 0.5 hertz. B) 2 hertz. C) 200 hertz.
What is the goal of comparative planetology?
A) to use planetary positions to foretell the future B) to find which planets will be most suitable for future colonization C) to help plan future visits by unmanned probes, orbiters, and rovers D) to determine the origin and evolution of the solar system E) to find out how our own solar system compares with extrasolar ones
The extraordinary blueness in lakes in the Canadian Rockies is the result of
A) high-altitude refraction of light. B) glacial silt in the water scattering blue light. C) the unique temperatures of these lakes throughout most of the year. D) none of the above