Over the course of a single night, stars move overhead due to ________.
A. the motion of the Sun around the galaxy
B. their motion around Earth
C. the tilt of Earth's axis
D. the rotation of the celestial sphere
E. the rotation of Earth on its axis
Answer: E
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In a single-slit diffraction experiment, a beam of monochromatic light of wavelength 630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the screen is 1.80 m, what are the positions of the first dark fringes?
A) 0.440 × 10-3 m B) 0.870 × 10-3 m C) 1.30 × 10-3 m D) 1.65 × 10-3 m E) 2.84 × 10-3 m
______________ is the measure of the ability of an atom to attract shared electrons to itself
Fill in the blank(s) with correct word
When Venus first formed it had large quantities of water vapor in its atmosphere while today only very low levels of water are present. Where did most of the water vapor go?
A) it was destroyed in the atmosphere by ultraviolet light from the Sun B) it became chemically incorporated into rocks in the crust C) it was blasted into space by impacts D) it escaped into space
A room in a house has a floor area of 110 ft2 . Which of the following is most likely the approximate volume of the room?
a. 3 m3 b. 30 m3 c. 300 m3 d. 3 000 m3 e. 10 m3