The sun moves
a. about one degree westward each day.
b. about one degree eastward each day.
c. about 360 degrees westward each day.
d. about 360 degrees eastward each day.
e. along the celestial equator.
B
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The orbits of most asteroids:
A) lie beyond Neptune. B) lie entirely beyond the orbit of Mars. C) cross the orbit of Mars. D) cross the orbit of Earth. E) cross the orbits of all four terrestrial planets.
Calculate the linear speed due to the Earth's rotation for a person at the equator of the Earth. The radius of the Earth is 6.40 × 10^6 m
a. 74.0 m/s b. 233 m/s c. 465 m/s d. 73.0 m/s
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
a.
A.
b.
B.
c.
C.
d.
D.
e.
E.
Quantum tunneling occurs in
a. nuclear fusion. b. radioactive decay by emission of alpha particles. c. the scanning tunneling microscope. d. all of the above. e. only (b) and (c) above.