Abnormal forms of protein molecules called prions have one of the characteristics of living things in that they
A) can replicate themselves by causing other molecules to change
B) actively respond to external changes
C) have very complex structures
D) use sunlight for energy
B
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Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. Use each word only once.
A narrow copper wire of length L and radius b is attached to a wide copper wire of length L and radius 2b, forming one long wire of length 2L
This long wire is attached to a battery, and a current is flowing through it. If the electric field in the narrow wire is E, the electric field in the wide wire is A) E. B) 2E. C) 4E. D) E/2. E) E/4.
A uniform rod (length = 2.0 m) is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through the rod at a point 0.50 m from one end of the rod. If the rod is released from rest in a horizontal position, what is the angular speed of the rod as it rotates through its lowest position?
A. 3.5 rad/s B. 3.8 rad/s C. 4.1 rad/s D. 2.0 rad/s E. 5.6 rad/s
Does the average distance that a neutron travels through fissionable material before escaping increase or decrease when two pieces of fissionable material are assembled into one piece?
Does this assembly increase or decrease the probability of an explosion? A) The average distance increases while the probability of an explosion also increases. B) The average distance decreases while the probability of an explosion decreases. C) The average distance increases while the probability of an explosion decreases. D) The average distance decreases while the probability of an explosion increases.