Which of the following electron transitions is forbidden?
A) 4p ? 1s B) 3s ? 2p C) 3d ? 2p D) 3d ? 1s
D
Physics & Space Science
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The unit of electrical potential, the volt, is dimensionally equivalent to:
a. J/C. c. F×C. b. J×C. d. C/J.
Physics & Space Science
Kepler's first law states that the orbits of the planets around the Sun are
a. circles. b. ellipses. c. all lying in the same plane. d. none of these.
Physics & Space Science
What is a temperature inversion?
What will be an ideal response?
Physics & Space Science
In A.D. 1054, Chinese astronomers observed the appearance of a new star, whose location is now occupied by
a. a pulsar. b. a neutron star. c. a supernova remnant. d. all of the above
Physics & Space Science