Which of the following is the best definition of refraction?
a. reversal in the direction of...
Physics, 31.08.2019 16:30 JojoSiwa901
Which of the following is the best definition of refraction?
a. reversal in the direction of a wave
b. loss of energy from a wave
c. change in wave direction due to a change in wave speed
d. blocking of a wave by a sharp boundary
Answers: 2
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The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
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