Compared to other spiral galaxies, the Milky Way is ____

a. comparable to the smallest and dimmest spirals known
b. smaller and dimmer than most spirals
c. very average in size and luminosity
d. larger and brighter than most spirals
e. comparable to the largest and brightest spirals known


d

Physics & Space Science

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What form of interplanetary debris did mankind discover first? Why?

What will be an ideal response?

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The sun's X-ray and ultraviolet light output is greater than what we would expect based on the photosphere's temperature

Indicate whether the statement is true or false

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Two point charges of +2.0 ?C and -6.0 ?C are located on the x-axis at x = -1.0 cm and x = +2.0 cm respectively

Where should a third charge of +3.0-?C be placed on the +x-axis so that the potential at the origin is equal to zero? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) A) x = 4.0 cm B) x = 1.0 cm C) x = 2.0 cm D) x = 3.0 cm E) x = 5.0 cm

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