How much energy is radiated each second by one square meter of a star whose temperature is 10,000 K? Note: ? in the Stefan-Boltzmann law is equal to

.



a.

5.67 × 10¹² J



b.

5.67 × 10⁸ J



c.

5.67 × 10⁴ J



d.

300 nm



e.

300,000,000 nm

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B

Physics & Space Science

Astronomers use the right ascension of an object as one part of its position on the celestial sphere. The right ascension can be compared to these direction lines on the Earth:

A. latitude. B. longitude. C. meridian. D. declination.

Our most detailed maps of Venus come from

A) direct observation from Earth-based optical telescopes. B) Earth-based radio telescopes. C) the Hubble Space Telescope. D) manned landings. E) the Magellan space probe.

What parts of the EM spectrum are now able to be viewed in the universe?

What will be an ideal response?

Which two temperature changes are equivalent?

A) 1 C° = 1 K B) 1 F° = 1 C° C) 1 K = 1 F° D) none of the above