What is the physical significance of the Biot number? Is the Biot number more likely to be larger for highly conducting solids or poorly conducting ones?
What will be an ideal response?
Biot number represents the ratio of conduction resistance within the body to convection resistance at the surface of the body. The Biot number is more likely to be larger for poorly conducting solids since such bodies have larger resistances against heat conduction.
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?All of the following statements about multi-ribbed belts made of EPDM are true EXCEPT:
A. ?EPDM belts are designed to last 50,000-60,000 miles. B. ?Belts are designed to have clearance between the rib peaks and the pulley grooves. C. ?EPDM belt to gradually lose material on the ribbing similar to the way a tire wears. D. ?EPDM belt is more elastic than a standard neoprene belt and resists cracking even at higher mileage.
Develop equations that may be solved to give the final temperature of the gas remaining in a tank after the tank has been bled from an initial pressure 
to a final pressure 
Known quantities are initial temperature, tank volume, heat capacity of the gas, total heat capacity of the containing tank, 
, and 
Assume the tank to be perfectly insulated.
What will be an ideal response?
____________________ is a limit to one or more degrees of freedom.
What will be an ideal response?
A device that is used to raise or lower voltage on equipment is a _________.
a. capacitor b. relay c. transformer d. switch