When light goes from one material into another material having a HIGHER index of refraction
A) its speed, wavelength, and frequency all decrease.
B) its speed and wavelength decrease, but its frequency stays the same.
C) its speed decreases but its wavelength and frequency both increase.
D) its speed decreases but its frequency and wavelength stay the same.
E) its speed increases, its wavelength decreases, and its frequency stays the same.
B
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If the radial velocity of a star is positive, the star is moving _________________ you
a. parallel to b. away from c. towards d. in circles around
A 5.5 meter long Aluminum wire has resistance of 0.40 m?, ? = 2.82 × 10-8 ? ? m, ? = 4.29 × 10-3 C-1. Its conductivity is
A) 233. ? ? m. B) 3.55 × 107 ?-1 m-1. C) 2.5 × 103 ?-1 . D) 2.5 × 103 ? ? m. E) 2.33 × 107 ?-1 m-1.
Which of the following is true of Saturn's moon Enceladus?
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