A steel pipe column (E 5 210 GPa) with length L 5 4.25 m is constructed of circular tubing with outside diameter d2 5 90 mm and inner diameter d1 5 64 mm. The pipe column is fixed at the base and pinned at the top and may buckle in any direction. The Euler buckling load of the column is most nearly:
(A) 303 kN
(B) 560 kN
(C) 690 kN
(D) 720 kN
(B) 560 kN
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The temperature scale where the numerical value is proportional to the average kinetic energy of the atoms or molecules is
a. Fahrenheit. b. Celsius. c. Kelvin. d. none of the above.
Earth exerts a gravitational force of 7000 N on one of the communications satellites. What force does the satellite exert on Earth?
A. more than 7000 N B. 7000 N C. less than 7000 N D. zero
What is meant by the "habitable zone"?
A) the zone where water can be a liquid around the center of the Galaxy B) the region around each star where terrestrial planets could have liquid water on their surfaces C) the zone in which terrestrial-sized planets could form around each star D) the region in dense atmospheres like Jupiter's that water droplets could form E) the regions near the poles of Mercury where liquid water might exist
A 400-turn circular coil (radius = 1.0 cm) is oriented with its plane perpendicular to a uniform magnetic field which has a magnitude that varies sinusoidally with a frequency of 90 Hz. If the maximum value of the induced emf in the coil is observed to be 4.2 V, what is the maximum value of the magnitude of the varying magnetic field?
A. 59 mT B. 62 mT C. 65 mT D. 68 mT E. 31 mT