The curving of light by air is greater when the light source is near the zenith.
Indicate whether the statement is true or false
Answer: False
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____ have elongated nuclei with spiral structure extending from the ends of the elongations. The Milky Way is a member of this class of galaxy
a. Spiral galaxies b. Barred spiral galaxies c. Elliptical galaxies d. Irregular galaxies e. S0 galaxies
If the rotational speed of a rotating habitat in space increases, the weight experienced by occupants
A) decreases. B) stays the same. C) increases. D) is always zero.
If the net torque on a body is zero, the net force on the body is
A. always zero. B. certainly not zero. C. not necessarily zero.
Each photon in a beam of light has an energy of 4.20 eV. What is the wavelength of this light? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A) 321 nm B) 103 nm C) 296 nm D) 412 nm E) 420 nm