The hottest star is the one that glows
A) red.
B) white.
C) blue.
D) need more information
Answer: C
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In the diagram, which of the transitions would absorb a photon with the smallest energy (longest wavelength)?
a. Transition 1
b. Transition 2
c. Transition 3
d. Transition 4
e. Transition 5
The average molecular kinetic energy of a gas can be determined by knowing
A) only the number of molecules in the gas. B) only the volume of the gas. C) only the pressure of the gas. D) only the temperature of the gas. E) All of the above quantities must be known to determine the average molecular kinetic energy.
Estimation: A reasonable estimate for the height of the walls in an ordinary American home is
A. 10 m. B. 8 m. C. 2.5 m. D. 1.5 m.
The Sun is a spherically shaped star that is
composed primarily of a)iron. b)hydrogen. c)water. d)helium.