A ball is thrown horizontally from the top of a tall cliff. Three seconds later, the ball has fallen a vertical distance of
A) 20 m.
B) 30 m.
C) 45 m.
D) depends on the initial horizontal speed of the ball
C
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Loess is transported by ________ and is important because ________.
A) flowing streams; it tends to braid streams and dam the water B) mass-wasting processes down slopes; it can cause debris avalanches C) wind around glaciers; it is fertile D) flowing streams; erodes very quickly
Aurora occur in the _______________
Fill in the blank(s) with correct word
A Mercator map is constructed by projecting the grid of the globe onto a(n) ________
A) flat surface B) cone C) cylinder D) interrupted surface E) circle
What element is behaves as the oxidizing agent in the following equation and what element behaves as the reducing agent? Sn2+ + 2 Ag ? Sn + 2 Ag?
A. The tin ion, Sn2+, is the oxidizing agent, while silver, Ag, is the reducing agent. B. The tin, Sn, is the reducing agent, while silver ion, Ag?, is the oxidizing agent. C. The tin ion, Sn2+, is the reducing agent, while silver, Ag, is the oxidizing agent. D. The tin, Sn, is the oxidizing agent, while silver ion, Ag?, is the reducing agent.