The laws of refraction and reflection are the same for sound as for light. The speed of sound in air is 340 m/s and in water it is 1510 m/s. If a sound wave approaches a plane water surface at an angle of incidence of 12.0°, what is the angle of refraction?
67.4°
Physics & Space Science
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Direct motion of a planet is its normal motion ____________ among the stars
a. west to east along the ecliptic b. east to west along the ecliptic c. west to east along the celestial equator d. east to west along the celestial equator
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Most galaxies are isolated in space
Indicate whether the statement is true or false
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Which component of Earth's motion causes the stars to rise earlier on successive nights?
What will be an ideal response?
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Longitude Lines Run
What will be an ideal response?
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