The absorption lines in the visible portion of the spectrum of a star that are produced by hydrogen are from the
a. Lyman series.
b. Balmer series.
c. Paschen series.
d. isotopes of hydrogen.
e. ions of hydrogen.
b
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One light-year (ly) is roughly _____
A) 1010 km B) 1011 km C) 1012 km D) 1013 km
Carnot Engine: An ideal Carnot engine operating between a warm reservoir of unknown temperature and a cold reservoir at 1.76 K has an efficiency of 40.0%. What is the temperature of the warm reservoir?
A. 2.93 K B. 0.0500 K C. 106 K D. 0.0400 K
Galactic cannibalism is the capture of the stars in a smaller galaxy by a larger galaxy during collision between the two.
Answer the following statement true (T) or false (F)
A gas is quickly compressed in an isolated environment. During the event, the gas exchanged no heat with its surroundings. This process is
A) isothermal. B) isochoric. C) isobaric. D) adiabatic. E) idealistic.