Which of the following is a result of Earth rotating on its axis?
A) The occurrence of day and night
B) The lunar phases
C) The yearly cycle
D) The occurrence of solar eclipses
A
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In a single-slit experiment, light of wavelength 500 nm is used to produce a diffraction pattern on a screen 4.0 m away. If the distance between both 3rd order minima is 6.0 cm, what is the slit width?
a. 
b. 
c. 
d. 
e. 
According to Mathiessen’s rule, the electrical resistivity of a metal is the _________of electrical resistivity of 0, 1, 2, and 3-dimensional defects and thermal vibrations.
Fill in the blank(s) with the appropriate word(s).
A solar eclipse that occurs when the moon's umbra reaches Earth's surface is called
a. a total solar eclipse. b. a partial solar eclipse. c. an annular solar eclipse. d. a penumbral solar eclipse. e. an umbral solar eclipse.
If the headlights on a car are separated by 1.3 m, how far down the road can they be resolved if the angular resolution of the eye is 5.0 × 10-4 rad and the person has excellent vision?
A) 1.3 km B) 5.0 km C) 4.8 km D) 0.65 km E) 2.6 km