What is Sgr A??

A) a source of bright radio emission in the center of our galaxy
B) a source of bright ultraviolet light near the center of our galaxy
C) the brightest star in the constellation Sagittarius
D) the bulge at the center of our galaxy
E) a source of bright X-ray emission coming from the entire constellation of Sagittarius


A

Physics & Space Science

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A good heat conductor is

A) a poor insulator. B) a good insulator. C) neither of these

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Two charges lie on the x axis, +2q at the origin, and ?3q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is

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In a collision the total ____________ is the same before and after

Fill in the blank(s) with correct word

Physics & Space Science