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tell me all abt concave and convex lens
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Religious beliefs of indigenous peoples of oceania connected them to

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity

Afathom is a unit of length, usually reserved for measuring the depth of water. a fathom is approximately 6 ft in length. take the distance from earth to the moon to be 230,000 miles, and use the given approximation to find the distance in fathoms.