Galileo proposed that the Sun is a rotating sphere after he ____

a. noted how the Sun rose in the east and set in the west
b. discovered the parallax of the Sun
c. timed a full rotation of the Sun's equator
d. observed sunspots move across the surface of the Sun
e. measured different spectral lines of emission on different days


d

Physics & Space Science

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If the momentum of an electron is 1.95 × 10-27 kg ? m/s,

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Galactic cannibalism is the capture of the stars in a smaller galaxy by a larger galaxy during collision between the two.

Answer the following statement true (T) or false (F)

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The slope of a distance vs. time graph is the __________

Fill in the blank(s) with correct word

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When rubbing two insulators together, the one that gets a positive charge has had

A. protons added. B. protons removed. C. electrons added. D. electrons removed. E. electrons added and protons removed.

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