An object that has zero resistance is a semiconductor
a. True
b. False
Indicate whether the statement is true or false
False
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What is a central dominant galaxy?
A) a galaxy around which many other smaller galaxies orbit B) a giant spiral galaxy that exerts large tidal forces on other nearby galaxies C) a spiral galaxy from which many smaller galaxies form when it is stripped apart by tidal forces D) a giant galaxy with several bright clumps of stars at the center of a dense cluster E) a hypothesized galaxy type that no longer exists, but once dominated the structure of the universe
At what time will a new moon set?
A) Noon. B) It will not set at all. C) Sunrise. D) Midnight. E) Sunset.
Tarzan swings back and forth on a long vine. His friend Jane notices in amazement that he makes 30 complete swings in 2.4 minutes
(a) What is the frequency (in hertz) of Tarzan's swing? (b) How long is the vine he is using? What will be an ideal response?
The Bacteria Chloroflexus live in live in lakes, rivers, hot springs, and aquatic environments with very high salt contents. They obtain energy from the Sun and carbon from other bacteria. Given this, they can be classified metabolicaly as
A) photoheterotrophs B) chemoautotrophs C) chemoheterotrophs D) photoautotrophs