Why is Europa considered a good candidate for the possible existence of life?
A) Strong evidence suggests that it has a deep, subsurface ocean of liquid water.
B) The Galileo spacecraft found strange seasonal changes on its surface that look like they could be due to life.
C) It is located within our Sun's habitable zone.
D) It has a thick atmosphere with a surface pressure greater than that on Earth.
A
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Electromagnetic wavelengths of a few centimeters are classified as in what range?
A. visible B. ultraviolet C. microwave D. radio E. gamma ray
All gamma-ray bursters have the same fundamental driving mechanism, although we don't yet know whether it is a hypernova or a merger of two neutrons stars
Indicate whether the statement is true or false
How much work must be done by frictional forces in slowing a 1000-kg car from to rest?
A) 3.41 × 105 J B) 2.73 × 105 J C) 4.09 × 105 J D) 4.77 × 105 J
A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance farther apart. Does C increase, decrease, or stay the same?
1.increase 2.decrease 3.remains the same