Why should isotherms and heat flow lines be orthogonal or perpendicular to each other?
What will be an ideal response?
Heat flow occurs because of a temperature difference and isotherms have no
temperature difference. Thus heat cannot flow along isotherms, but must be
perpendicular or orthogonal to isotherms.
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A.
B.
C.
D.
E.
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What is the average distance between air molecules at STP?
a.
b.
c.
d.