In a style rule, the CSS property: value combination is called the ______.
A. heading
B. declaration
C. rule
D. selector
Answer: B
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An astronaut is piloting a spacecraft, which is in a circular orbit around Earth. A space station is ahead, on the same circular orbit. If he fires his rockets briefly to increase the forward speed of the rocket, what will happen?
What will be an ideal response?
Density waves may explain
A) the lack of blue stars in the halo. B) the random orbits of halo stars. C) the density of red stars in the bulge. D) the spiral arm structure of the Galaxy. E) the large number of open clusters in the halo.
Disregarding the effects of friction, a cyclist will coast farther when a lamp powered by a wheel generator is
A) of low wattage. B) of high wattage. C) turned off. D) none of the above
A heat engine having the maximum possible efficiency has an efficiency of 35.0% when operating between two heat reservoirs. If the temperature of the hot reservoir is 700 K, what is the temperature of the cold reservoir?
A) 200 K B) 245 K C) 350 K D) 455 K E) 600 K