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A university lecture by a professor of Physics

Listen to audio recording and answer the questions

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Q1

1.Which would be the best title for this lecture?

Q2

Judging from this lecture, which statement is true?

Q3

Karl Schwartzchild's work led to the discovery of black holes. According to the lecture, how has he been commemorated?

Q4

An astronomer discovers a new celestial object. Which characteristic(s) suggests that there could be a black hole nearby?

Q5

Why does the professor mention Cygnus X-1?

Q6

According to the professor, why should we not be worried about a black hole?

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