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Question
Which statement about black holes is true?A) Their escape velocity is greater than the speed of light.
B) They form from 1.4 solar mass stars.
C) They form an event horizon at twice the Schwartzschild radius.
D) Their main-sequence mass was 5-10 solar masses.
E) Their event horizon is a physical surface boundary.
Answer
This answer is hidden. It contains 1 characters.
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