The Mid-Atlantic Ridge separates the South American plate and the African plate at a divergent plate boundary.
Indicate whether the statement is true or false.
Answer: True.
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Complex molecules in the interstellar medium are found
A) only around the supergiant stars like Betelgeuse that make their heavy atoms. B) uniformly throughout the disk of the Galaxy. C) primarily in the dense dust clouds. D) scattered evenly throughout the universe, a product of the Big Bang itself. E) on the surfaces of the coolest class K and M stars only.
Projectile Motion: As shown in the figure, a heavy rock is shot upward from the edge of a vertical cliff. It leaves the edge of the cliff with an initial velocity of 15 m/s directed at 25° from the vertical and experiences no appreciable air resistance as it travels. How high is the cliff?
Fill in the blank(s) with the appropriate word(s).
Center of Mass: A 30-kg child stands at one end of a floating 20-kg canoe that is 5.0-m long and initially at rest in the water. The child then slowly walks to the other end of the canoe. How far does the canoe move in the water, assuming water friction is negligible?
A. 1.0 m B. 2.0 m C. 3.0 m D. 4.0 m E. 5.0 m
Which is the smallest entity in the following list?
A. Molecule B. Electron C. Nucleus D. Atom