The thermionic emission current density from a hot filament is in the form of a rate equation, with the energy term equal to the _________.
Fill in the blank(s) with the appropriate word(s).
work-function
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Explain Mercury's peculiar rotation and revolution. How is it different than most other planets?
What will be an ideal response?
Polarization: Light of intensity S0 that is polarized horizontally passes through three ideal polarizers. The first and third are horizontal, but the second one is oriented at 0.39270 rad to the horizontal. In terms of S0, the intensity of the light that passes through the set of polarizers is closest to which one of the following choices?
A. 0.729 S0 B. 0.125 S0 C. 0.427 S0 D. 0.854 S0
Which statement about this cluster is not true?
A) It contains some stars that are burning helium in their cores. B) It probably contains no young stars at all. C) It is likely to be located in the halo of the galaxy. D) It is likely to be spherical in shape. E) It is the type of cluster known as an open cluster of stars.
The Moon's spin-orbit resonance shows it is ________ with the Earth
Fill in the blank(s) with correct word