Which of the following statements about novae is true? (indicate all true answers) A nova can occur on a single, isolated star. A star system that undergoes a nova may have another nova sometime in the future. A nova involves fusion taking place on the surface of a neutron star. A nova is the most powerful type of explosion ever seen in the universe. When a star system undergoes a nova, it brightens as much as a star system undergoing a supernova.
Which of the following statements about novae is true? (indicate all true answers) A nova can occur on a single, isolated star. A star system that undergoes a nova may have another nova sometime in the future. A nova involves fusion taking place on the surface of a neutron star. A nova is the most powerful type of explosion ever seen in the universe. When a star system undergoes a nova, it brightens as much as a star system undergoing a supernova.
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Transcribed Image Text:Which of the following statements about novae is true? (indicate all true answers)
A nova can occur on a single, isolated star.
A star system that undergoes a nova may have another nova sometime in the
future.
A nova involves fusion taking place on the surface of a neutron star.
A nova is the most powerful type of explosion ever seen in the universe.
When a star system undergoes a nova, it brightens as much as a star system
undergoing a supernova.
Transcribed Image Text:Which of the following statements about black holes is true for an object falling into
a black hole? (select all true answers)
In the object's reference frame, the object will slow down as it falls and come to
a stop just before it reaches the event horizon.
Once the object crosses the event horizon, it can no longer communicate with
anything outside the black hole.
From an outside observer's viewpoint, there will be a bright flash of light as the
object crosses the event horizon.
From an outside observer's viewpoint, light from the object will become
increasingly blueshifted as it approaches the event horizon.
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