How does the spectrum of a star depend on its surface temperature?
A. The cooler the star, the more molecular absorption bands will be present in its spectrum.
B. Hot stars and cool stars can both have weak hydrogen lines.
C. The hotter the star, the more colors will be present in its continuous spectrum.
D. All of these choices are correct.
E. None of these choices are correct.
Answer: D
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Indicate whether the statement is true or false
The color charge of leptons is
A) violet. B) red. C) blue. D) zero. E) green.
Intensity: About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. Use this information to estimate the average power output of the sun.
A. 1 × 1026 W B. 2 × 1026 W C. 3 × 1026 W D. 4 × 1026 W
In what ways do the magnetic fields of both Uranus and Neptune defy the conventional Dynamo Theory for planetary magnetic fields?
What will be an ideal response?