The word LASER is an acronym for
A)
Light Altered Spectra of Energy Radiated.
B)
Latent Source of Enhanced Radiation.
C)
Light Amplification by the Stimulated Emission of Radiation.
D)
Light Absorbed States of Energetic Resonance.
E)
none of the above answers.
C
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The sketch shows groups of stars on the H-R diagram, labeled (a) through (e); note that (a) represents the entire main sequence, while (c) and (d) represent only small parts of the main sequence. Which group represents stars that are cool and dim?
A) a B) b C) c D) d E) e
An important condition for operation of the Falkirk Wheel is that
A) water in each gondola have the same depth. B) ships carried are more or less equal in weight. C) no water spill when a ship enters a gondola. D) all of the above E) none of the above
A meter stick is moving toward you with a speed of 0.85c. What is its length?
A) zero B) 0.47 m C) 0.53 m D) 0.74 m E) 1.0 m
For a mole of material, the increment of heat (dQ) added to the material divided by the change in temperature (dT) is the heat _____________.
Fill in the blank(s) with the appropriate word(s).