How is laminar or turbulent free convection determined?
What will be an ideal response?
The Grashof number is the common parameter used to determine whether free
convection is laminar or turbulent. A high Grashof number indicates turbulence
and a low Grashof number indicates laminar free convection.
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During the course of a demonstration the professor is called away. When he returns he finds a beaker of water that was at room temperature is now at a slightly higher temperature. There is a stirring rod on the desk and a cigarette lighter. The professor can assume that the temperature increase is due to
A. heat added to the system. B. either heat added or mechanical work done. C. mechanical work done on the system.
Why are the designs of the Hubble and Chandra Space Telescopes different?
What will be an ideal response?
The spin of elementary particles is quantized
a. True b. False Indicate whether the statement is true or false
What were the major reasons for the great increase in size of the typical power plant as seen in Fig. 8.10?
What will be an ideal response?