What is evaporation?
Ans: Evaporation is when the fastest molecules at the surface of a liquid have escape velocity and leave to become a gas.
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For the heat exchanger tube and fin arrangement shown write the node equations for nodes 2 and 5. Write the equations for both implicit and explicit methods.
The "flatness" problem arises because the curvature of space seems remarkably close to:
A) zero curvature, favoring a spherical cosmos. B) exactly one. C) .5, suggesting we are split between open and closed universes. D) 2.73 K, in spite of the eddies and turbulence that led to galaxy formation. E) infinity, suggesting an open universe is the only possible cosmology.
Newton's rings will be closer together if illuminated with
A) red light. B) blue light. C) white light. D) none of the above
A quantum is a
a. discrete amount. b. fundamental property. c. unit of momentum. d. proton.