The apparent path that the Sun traces annually along the celestial sphere is called the
a. ecliptic.
b. heliosphere.
c. solstice circle.
d. celestial prime meridian.
a
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In order for the angular momentum of a rotating object to be conserved
A. Net force must be zero B. Net force must be constant, but not equal to zero C. Net torque must be zero D. Net torque must be constant, but not equal to zero
Chondritic meteorites provide important clues because they are believed to
A. contain grains from the first material that condensed out of the Solar nebula. B. be the only source of the necessary amino acids required for life. C. be the source of all coal found on Earth. D. contain many rare metals.
What is the accepted explanation for millisecond pulsars?
What will be an ideal response?
Why would the earth's orbit be unaffected were the Sun to suddenly become a black hole?
What will be an ideal response?