The vernal equinox marks the beginning of spring in the northern hemisphere
Indicate whether the statement is true or false
TRUE
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Which of the following statements about the celestial equator is true at all latitudes?
A) It extends from your horizon due north, through your zenith, to your horizon due south.
B) It cuts the dome of your local sky exactly in half.
C) It represents an extension of Earth's equator onto the celestial sphere.
D) It lies along the band of light we call the Milky Way.
E) It extends from your horizon due east, through your zenith, to your horizon due west.
A solid steel ball is dropped from a great height and when its speed reaches 20 m/s its acceleration downward is 7.35 m/s2 . What would be the terminal velocity in this situation?
a. 80 m/s c. 40 m/s b. 60 m/s d. 20 m/s
A(n) ____ is a commonly accepted set of scientific ideas and assumptions
a. theory b. paradigm c. hypothesis d. natural law e. model
The force that causes an object to fall to earth is
A. gravitational force. B. electromagnetic force. C. weak interaction. D. strong nuclear force.