What is the resistance of 1.0 m of a solid cylindrical metal cable having a diameter of 0.40 inches and a resistivity of 1.68 × 10-8 ? ? m?
A) 0.00012 ?
B) 0.00021 ?
C) 0.0012 ?
D) 0.0021 ?
B
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The theory of general relativity proves that wormholes like those used in science fiction cannot exist
Indicate whether the statement is true or false
You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16 cm
If you could use any two of these lenses to build a telescope, what is the lens separation for the telescope to provide the maximum magnification for comfortable viewing of a planet? A) 10.0 cm B) 12.0 cm C) 18.0 cm D) 24.0 cm
A spring is stretched from 0.500 m to 0.800 m. Assume the un-stretched position is 0.00 m. If the spring constant of the spring is 10.0 N/m, what is the work done on the spring?
A. 1.95 J B. 2.21 J C. 2.45 J D. 2.75 J E. 3.01 J
The average temperature over the past 1000 years has been about 15?C?C. From the graphs, you can conclude that Earth's average temperature during the past 800,000 years has
A. varied between about 7?C and 19?C B. stayed remarkable steady, never varying by more than about 2?C C. never been as high as it is today D. varied between about ??10?C and +4?C