During the Dark Ages in Europe, the scientific work of the ancient Greeks was preserved and further developed primarily by scholars in
A) Baghdad.
B) Greece.
C) Rome.
D) India.
E) China.
A
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Cellular pH is kept near a value of seven, due to the action of:
a. salts b. buffers c. acids d. bases e. water
Pressure in a Liquid: An air bubble underwater has the same pressure as that of the surrounding water. As the air bubble rises toward the surface (and its temperature remains constant), the volume of the air bubble
A. increases. B. decreases. C. remains constant. D. increases or decreases, depending on the rate it rises.
Answer the following statement(s) true (T) or false (F)
In the region where their beams overlap, two car headlights will create a clear interference pattern on a distant screen.
For this problem, assume that the acceleration of gravity is 10 m/s2 downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?
A) zero B) 10 m/s upward C) 10 m/s downward D) 20 m/s downward E) 20 m/s upward