The ____________________ shows that sunspots are associated with magnetic activity
Fill in the blank(s) with correct word
Zeeman effect
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An annular solar eclipse occurs
A. when the Moon in its orbit is closest to Earth, and, so not able to cover the complete disk of the Sun. B. every year when the Sun is highest in the sky. C. when the Moon in its orbit is farthest from Earth, and, so not able to cover the complete disk of the Sun. D. None of these choices is correct.
When we glimpse the chromosphere at the start and end of totality, its color is
A) green (the famous flash). B) yellow, like the photosphere below it. C) red, due to ionized hydrogen at lower pressure. D) blue, due to the ionization of nitrogen by the magnetic fields. E) white from the moonlight.
Explain how Kepler's laws allow us to use the motion of an asteroid to find its average distance from the Sun
What will be an ideal response?
The quantity "pressure" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to
a. MLT?1. b. ML?1T?2. c. M2L?1T?3. d. a dimensionless quantity.