Which of the following telescopes benefits most from adaptive optics?

A) the Keck I telescope on Mauna Kea
B) the Hubble Space telescope
C) the Arecibo radio telescope in Puerto Rico
D) the Chandra X-ray Observatory


A) the Keck I telescope on Mauna Kea

Physics & Space Science

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Exclusion Principle: How many possible sets of electron states (or quantum numbers) are there in the 5f subshell?

A. 2 B. 8 C. 10 D. 14

Physics & Space Science

Acceleration due to gravity on the Moon is less than on Earth, and the Moon is smaller than Earth. This means that compared to an Earth satellite, a satellite in close orbit about the Moon would travel

A) slower. B) faster. C) the same. D) need more information

Physics & Space Science

No optical traces have been found of the gamma-ray bursters

Indicate whether the statement is true or false

Physics & Space Science

The radius of the Sun is 6.95 × 108 m. It radiates heat at the rate of 5.42 × 1026 W. Assuming that it is a perfect emitter, what is the temperature of the surface of the Sun? The Stefan-Boltzmann constant is 5.67 × 10-8 W/(m2?K4)

A) 6.30 × 103 K B) 8.25 × 103 K C) 8.87 × 103 K D) 3.93 × 107 K E) 5.78 × 107 K

Physics & Space Science