Which is the largest moon in the solar system?
A) Titan
B) the Earth's moon
C) Ganymede
D) Triton
C
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An ideal diode in an ac circuit
A. doubles the current. B. halves the current. C. permits the current to flow in only one direction. D. permits the current to flow in one direction and double the current to flow in the other. E. permits the current to flow in one direction and half the current to flow in the other.
The Big Bang formed:
A) only hydrogen. B) only helium. C) hydrogen and helium, but nothing else. D) all elements up to iron. E) all elements found in nature now.
A uniform, horizontal beam of length 6.0 m and weight 140 N is attached at one end to a wall by a pin connection (so that it may rotate). A cable attached to the wall above the pin supports the opposite end. The cable makes an angle of 60° with the horizontal. What is the tension in the cable needed to maintain the beam in equilibrium?
a. 81 N c. 70 N b. 69 N d. 140 N
In nickel-based superalloys, aluminum and titanium are added to provide _________-hardening.
Fill in the blank(s) with the appropriate word(s).