An experimental result that is statistically significant is:
a. likely to occur by chance alone
b. unlikely to occur by chance alone
c. scientifically significant or important
d. the result of an experiment with only one variable
e. influenced by sampling error
b
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When an apple that weighs 1 N is held at rest above your head, the net force on the apple is
A) 0 N. B) 0.1 N. C) 1 N. D) 10 N. E) none of the above
The "wispy terrain" on Rhea was revealed by the Cassini spacecraft to be
A) ice cliffs created by tectonic fractures. B) water ice flows from past impacts that cracked its icy surface. C) the icy ash of water volcanoes. D) "maria" created during the period of high impacts. E) water ice flows from geyser-like activity.
Conglomerate and breccia are classified as ______________ rocks
Fill in the blank(s) with correct word
Surface tension of liquids
A) increases when wetting agents are added. B) decreases as the liquid temperature increases. C) is about the same for all liquids. D) results from a thin molecular membrane beneath the liquid surface. E) keeps steel ships afloat.