On the autumnal equinox the Sun is
a. 23.4° north of the celestial equator.
b. 23.4° south of the celestial equator.
c. on the celestial equator and moving north with respect to the equator.
d. on the celestial equator and moving south with respect to the equator.
e. closest to the north celestial pole.
d
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When a nucleus undergoes alpha decay, the daughter element always has
A. more electrons than the parent. B. less charge than the parent. C. more neutrons than the parent. D. the same atomic number as the parent.
Unpolarized light passes through three ideal polarizing filters
The first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal, and the third filter has a vertical transmission axis. What percent of the light gets through this combination? A) 9.4% B) 91% C) 50% D) 0% E) 33%
The temperature changes from 35°F during the night to 75°F during the day. What is the temperature change on the Celsius scale?
A) 72 C° B) 40 C° C) 32 C° D) 22 C°
The anomalous Zeeman effect occurs because electrons have intrinsic spin, and when placed in a magnetic field, lose their degeneracy for the __________ states with different ________ . Fill in the missing words