Discuss a theory that explains how the corona is heated
What will be an ideal response?
Astronomers have mapped a magnetic carpet of looped magnetic fields extending up through the photosphere. Because the gas in the chromosphere and the corona has very low densities, it can't resist movements of the magnetic fields. Turbulence below the photosphere seems to flick the magnetic loops back and forth and whip the gas about, heating the gas. Further observations have revealed magnetic waves generated by turbulence below the photosphere traveling up into the chromosphere and corona and heating the gas.
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The total mass of a binary system can be calculated from
a. the ratio of the angular separation from the center of mass of each of the stars. b. the distance to the binary and its radial velocity. c. the semimajor axis and period of the orbit. d. the radial velocities of the two stars. e. the time required for the smaller star to eclipse the larger star.
____________________ is the resistance of a gas to the flow of radiation
Fill in the blank(s) with correct word
If the fastest you can safely drive is what is the longest time you can stop for dinner if you must travel in total?
A) 1.0 h B) 1.3 h C) 1.4 h D) You can't stop at all.
Which of the following was the first synthetic compound to be made?
a. Neoprene b. Polyethylene c. Bakelite d. Nylon