The Maxwellian speed distribution provides a direct explanation of:
A. thermal expansion
B. the ideal gas law
C. heat
D. evaporation
E. boiling
Ans: D. evaporation
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________ attraction holds the electron in orbit around the nucleus of the hydrogen atom.
A. Gravitational B. Electrical C. Nuclear D. Centrifugal
The charge of an electron is
a. positive b. negative c. electrons have no charge
Compared to Jupiter, the motions observed in Saturn's atmosphere are:
A) faster with fewer zone-belt alternations. B) slower with fewer zone-belt alternations. C) faster with more zone-belt alternations. D) slower with more zone-belt alterations. E) nearly identical.
Star A and star B both have an apparent magnitude of 7.0, but star A is at a distance of 15 pc and star B is at a distance of 30 pc. Which statement below is correct?
A) Star A appears brighter than star B, but star B and star A have the same intrinsic brightness. B) Star B appears brighter than star A, but star B and star A have the same intrinsic brightness. C) Star A and star B appear to have the same brightness, but star B is intrinsically brighter than star A. D) Star A and star B appear to have the same brightness, but star A is intrinsically brighter than star B. E) It is impossible to determine how bright these stars are or appear to be relative to one another, given the information above.