Which ancient culture had the greatest known success in predicting eclipses?
A) Aztecs
B) Mayans
C) Egyptians
D) Babylonians
E) Greeks
B
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Neutron stars are the size of ________
Fill in the blank(s) with correct word
Why does the observation that all distant galaxies are moving away from Earth not violate the Cosmological Principle?
A. Any other galaxy in the Universe will also see the Universe expanding in the same way. B. The motion of galaxies relative to Earth has nothing to do with the Cosmological Principle. C. The night sky is still dark. D. It does violate the Cosmological Principle but for only the location of Earth.
The net force always points in the same direction as:
a. the displacement. b. the frictional force. c. the velocity. d. the force of gravity. e. the acceleration.
A package is dropped from a helicopter that is moving upward at 15m/s If it takes 8.0s before the package strikes the ground, how high above the ground was the package when it was released? Neglect air resistance
What will be an ideal response?