The radio lobes of double-lobed radio sources are inflated by jets of excited gas emerging in two directions from the central galaxy
Indicate whether the statement is true or false
True
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What determines the amount of time that a particular star remains above your horizon any given day?
A) all three of your latitude, longitude, and the star's declination B) your latitude and the star's declination only C) your latitude and the star's right ascension only D) your longitude and the star's declination only E) your longitude and the star's right ascension only
Which of these gases are outgassed from our volcanic eruptions?
A) oxygen, methane, ammonia B) carbon dioxide, water vapor, oxygen C) ammonia, water vapor, oxygen D) water vapor, methane, carbon dioxide E) helium, carbon dioxide, methane
The alternating current in wide use in homes in North America is 60 cycles per second, or 60 Hz. How many times per minute does this current reverse its direction of travel?
A. 3600 times B. 60 times C. 7200 times D. 120 times E. None of these choices are correct
The leveling of the Earth's surface is known as ______________
Fill in the blank(s) with correct word