The basic energy resource that fueled the "industrial revolution" was a form of
A) nuclear energy.
B) thermal energy.
C) gravitational energy.
D) chemical energy.
E) radiant energy.
D
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A light-year is the distance light travels in one year
Indicate whether the statement is true or false
Why do astronomers narrow their search to the "habitable zone" of other star systems?
a. the most likely place to support planets with thick atmospheres b. the least likely place to have zero ultraviolet radiation c. the most likely place with liquid water, and extraterrestrial life d. the most likely place to have oxygen in the atmosphere e. the least likely place to have wide temperature ranges on the surfaces of planets
It can be concluded from Gauss's law for magnetism that
A) south magnetic poles do not exist. B) isolated magnetic poles sometimes exist. C) north magnetic poles do not exist. D) magnetic poles are pairs of electric charges. E) isolated magnetic poles do not exist.
In a relay race, runner A is carrying the baton and has a speed of 2.8 m/s. When he is 25 m behind the starting line, runner B starts from rest and accelerates at 0.080 m/s2. How fast is B traveling when A overtakes her?
A) 0.10 m/s B) 0.33 m/s C) 0.84 m/s D) 2.0 m/s E) Runner A never catches up.