The radio waves emitted from Sagittarius A* region take how long to travel to Earth?

A. 220 million years
B. 50,000 years
C. 100,000 years
D. 8.5 years


Answer: B

Physics & Space Science

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Indicate whether the statement is true or false

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The southern highlands of Mars date to which geological era?

A) Amazonian B) Hesperian C) Cenozoic D) Noachian

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A surprise from the Pioneer Venus photos was that:

A) the craters on Venus are all large. B) the clouds rotate around the planet in only four days, very unlike the slow surface rotation. C) the clouds of Venus are mainly water vapor, like our own. D) the highest volcano, Maxwell Mons, protrudes above the cloud deck. E) no impact craters at all are found on the Venusian surface.

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Three identical resistors are connected in series to a 12-V battery. What is the voltage across any one of the resistors?

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