What statement below best describes the behavior of light encountering the objective lens of a refracting telescope?
a. All light is absorbed as it travels through a dense, transparent material.
b. White light from astronomical objects is emitted by the lens.
c. Light rays are focused to form an image after they pass through the lens.
d. Light rays are focused to form an image after they reflect off the lens.
c
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The magnetic field tilts of which two bodies are the most unusual?
A) Mercury and Earth B) Jupiter and Saturn C) Uranus and Neptune D) Saturn and Venus E) Mars and Saturn
The "wispy terrain" on Rhea was revealed by the Cassini spacecraft to be
A) ice cliffs created by tectonic fractures. B) water ice flows from past impacts that cracked its icy surface. C) the icy ash of water volcanoes. D) "maria" created during the period of high impacts. E) water ice flows from geyser-like activity.
If the interplanar spacing of NaCl is 2.814 × 10?10 m, what is the predicted angle at which X-rays of wavelength 0.140 nm will be diffracted in a first-order maximum?
A. 31.3° B. 7.20° C. 20.5° D. 14.4° E. 29.8°
____ pushed gas and dust particles out of the solar nebula by the light from the sun
a. Radiation pressure b. Outgassing c. Condensation d. Accretion e. Differentiation