Once a protoplanet reached a large mass, what is the next step for it to formally grow into a planet?
a. gravitational collapse
b. expanding
c. accretion
d. condensation
e. slowing momentum
a
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From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 121.6 nanometers (nm). The spectrum of a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm
What can we conclude? A) The star is moving toward us. B) The star is moving away from us. C) The star is getting hotter. D) The star is getting colder. E) The "star" actually is a planet.
What is the anticipated interaction of the Milky Way and Large Magellanic cloud?
What will be an ideal response?
If an electric toaster operating on 120 volts draws a current of 6 amperes, the resistance of the toaster is 20 ohms
Indicate whether the statement is true or false