CVC PHYS1403 SU201 Calc_SE (page 5 of 8) s surfacc, D. The light really docsn i
ID: 304952 • Letter: C
Question
CVC PHYS1403 SU201 Calc_SE (page 5 of 8) s surfacc, D. The light really docsn i go into the black hole since n s traveling so tas. n bounces of the bole s away from us, so that is why we can no longer see it. 20) Which of the following BEST describes a Nova? A. B. C. D. An explosion which creates a planetary nebula and a white dwarf The explosive burning of Hydrogen on the surface of a white dwarf in a binary system The carbon detonation of a white dwarf when its mass exceeds 1.4 solar masses in a binary star system. The collapse and bounce of an iron core in an isolated massive star 21) Select the statement that BEST describes core collapse and rebound ("bounce") within a dying, massive star A. As the core collapses, the concentrated magnetic and electric fields produced by the collapse sling material B. As the core collapses, the electrons and protons combine to form neutrons. As the collapse continues, the core outward, causing it to bounce away from the core becomes so highly compressed that the neutrons form a barrier that halts the collapse. The innermost part of the core stops collapsing and rebounds slightly as the barrier takes shape. As the core col slings the ma As the core collapses, a temporary rapid expansion of the core to twice its original size causes the core to expand outward C. llapses, the increased density of the material creates a huge localized gravitational field, which causing it to bounce way from th e core D. 22) Although core bounce probably helps some to eject the outer layers of a High Mass star in an event calleda produced it is most likely that that the huge amount of when the electrons and protons combine to form the neutrons in this High Mass star are the main factor driving the shock wave that propels the outer layers f the star into space. A. Supemova, neutrinos B. C. D. Nova, neutrinos Helium flash, neutrinos Deflagration, neutrinos 23) If the Sun were magically to turn into a black hole of the same mass, Earth's orbit would.. A) Remain the same-the Earth would not notice any change B) The Earth would be sucked into the Sun by the increased gravity C) The Earth would drift way from the Sun D) The Earth's rate of rotation would increase 24) Why is the surface of a black hole called the Event Horizon? Because it is the last location around a Black Hole that an observer would be able to see anything happening. Because it is where an observer can see the first light escaping from the Black Hole. Because it is the first place where matter falling into the Black Hole would collect. Because it is where the pair particle production occurs, an important event around Black Holes. A. B. C. D. Cedar Valley CollegeExplanation / Answer
Answer to 20 is option a. Nova is an explosion where a planetary nebula and white dwarf are created. So, an explosion which creates a planetery nebula and a white dwarf is best describing a nova.