The most massive stars generate energy at the end of their lives by fusing iron in their cores
Indicate whether the statement is true or false
FALSE
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The discussion of the "launched apple" and the Moon shows that the
A. velocities of the apple and Moon are constant. B. motion of the Moon and apple can be explained by the same laws. C. apple and the Moon have the same acceleration. D. apple and the Moon experience the same-sized force.
When you see the bright flash of a meteor, what are you actually seeing?
A) a star that has suddenly shot across the sky B) a bright star moving quickly past our solar system C) emission of visible light from a particle that has not yet entered Earth's atmosphere D) the flash that occurs when a speeding rock from space hits the ground E) the glow from a pea-size particle and the surrounding air as the particle burns up in our atmosphere
Bats can detect small objects such as insects that are of a size approximately that of one wavelength. If bats emit a chirp at a frequency of 60 kHz, and the speed of sound in air is 340 m/s, what is the smallest size insect they can detect?
What is the evidence to support the existence of a black hole at the center of the Milky Way?
What will be an ideal response?