A plane is traveling at Mach 0.930 through air at a temperature of 0°C. What is the plane's speed? (Speed of sound at 0°C is 331 m/s.)
a. 308 m/s
b. 331 m/s
c. 424 m/s
d. 93.0 m/s
e. Mach number is undefined at 0°C.
a
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According to Heisenberg's uncertainty principle, electrons are more unpredictable than protons. This is because electrons
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A cylindrical space colony 13 km in diameter and 30 km long has been proposed as living quarters for future space explorers. Such a habitat would have cities, land, and lakes on the inside surface and air and clouds in the center. All this would be held in place by the rotation of the cylinder about the long axis. How fast would such a cylinder have to rotate at its perimeter to produce a 1-g
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