The __________ moon is visible above the eastern horizon a couple of hours before sunrise
a. waning gibbous
b. waxing gibbous
c. waxing crescent
d. waning crescent
e. new moon
D
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For small angle approximations
a. the angle must be 10° or less b. the angle must be 10 radians or less c. the angle must be 1° or less d. the angle must be 1 radian or less e. the angle must be 45° or less
An atom is ionized if one of its electrons jumps to a higher energy level in the atom
Indicate whether the statement is true or false
As a normal object’s thermal energy U goes to zero, the slope of a graph of its entropy S versus U
A. approaches infinity. B. approaches some positive value less than infinity. C. approaches zero. D. approaches some finite negative value. E. approaches negative infinity. F. depends entirely on the object’s properties.
This painting represents the Sun and planets (and two dwarf planets) of our solar system. What is not to scale in this painting?
A) The sizes of the planets are not correctly scaled compared to each other or the Sun. B) The distances between the planets are not shown to scale. C) The Sun is too big compare to the planets. D) Everything is correctly scaled, but the planets are shown in the wrong order from the Sun. E) Neither distances nor sizes are correctly scaled.