Granulation is caused by

a. sunspots.
b. rising and sinking gases below the photosphere.
c. shock waves in the corona.
d. the solar wind flowing away from the corona.
e. heating in the chromosphere.


b

Physics & Space Science

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Parallel Wires: Two long, parallel wires carry currents of different magnitudes. If the current in one of the wires is doubled and the current in the other wire is halved, what happens to the magnitude of the magnetic force that each wire exerts on the other?

A. It is doubled. B. It stays the same. C. It is tripled. D. It is quadrupled. E. It is reduced by a factor of two.

Physics & Space Science

Dark lines in an absorption spectrum represent:

a) particular energies of light coming from a distant object that areabsorbed by materialin between. b) flaws in the telescopes and spectroscopes that astronomers use to measure spectra. c) hotter regions in the object that is emitting the spectrum. d) regions where light travels more slowly and is not able to reach us. e) photons emitted when an electron jumps from a higher to a lower energy level.

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In neutronization of the core, a proton and an electron make a neutron and a(n):

A) positron. B) muon. C) neutrino. D) pion. E) antineutron.

Physics & Space Science

You are a passenger in a moving car, and you drop a coin from your right hand, holding your left hand directly below the point of release. If the car is moving at unchanging velocity, the coin will come down

A) in front of your left hand. B) in your left hand. C) to the side of your left hand. D) behind your left hand.

Physics & Space Science