Pulling out of a dive, the pilot of an airplane guides his plane into a vertical circle with a radius of 600 m. At the bottom of the dive, the speed of the airplane is 150 m/s. What is the apparent weight of the 70.0-kg pilot at that point?
A) 3310 N
B) 686 N
C) 2630 N
D) 489 N
E) 1370 N
A
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The absorption lines in the visible portion of the spectrum of a star that are produced by hydrogen are from the
a. Lyman series. b. Balmer series. c. Paschen series. d. isotopes of hydrogen. e. ions of hydrogen.
In Bohr's model of the atom, electrons
A) only make transitions between orbitals of specific energies. B) are not confined to specific orbits. C) are spread uniformly through a large, positive mass. D) can be halfway between orbits. E) move from orbit to orbit in many small steps.
The condensation theory is an example of:
A) a catastrophic theory. B) a hot Jupiter theory. C) a collision hypothesis. D) an evolutionary theory. E) a capture theory.
The characteristic that distinguishes fermions from bosons is
A) their mass. B) their electric charge. C) their spin. D) their size. E) their speed of travel.