Recently discovered organisms that create their energy through chemical reactions (chemosynthesis instead of photosynthesis) and live in environments previously thought too alkaline, hot, cold, dark, saline, etc. to sustain life
These organisms are collectively called: A) viruses.
B) huge crabs.
C) extremophiles.
D) hydrothermal vents.
E) giant red tube worms.
C
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A) 0.20 A B) 0.40 A C) 0.80 A D) 3.2 A E) 1.6 A
Two long parallel wires are placed side-by-side on a horizontal table. If the wires carry current in the same direction,
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A capacitor in a single-loop RC circuit is charged to 85% of its final potential difference in 2.4 s. What is the time constant for this circuit?
a. 1.5 s b. 1.3 s c. 1.7 s d. 1.9 s e. 2.9 s
How many neutrons are in a 15C nucleus?
A. 7 B. 8 C. 6 D. 9