What's the fundamental reason that Mars has so little geological activity compared to Earth?
A) its small size compared to Earth
B) its large size compared to the Earth
C) its farther distance than Earth to the Sun
D) its closer distance than Earth to the Sun
E) its rapid rotation compared to the Earth
F) its slow rotation compared to the Earth
A) its small size compared to Earth
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If the speed of light in a sphere is 2 × 108 m/s, its index of refraction is
A) 0.50. B) 0.67. C) 1.0. D) 1.5. E) 2.0.
A particular lightbulb produces 8 J of thermal energy while producing 2 J of radiant energy, and this is its entire energy output during this time. How energy-efficient is this bulb [as a producer of light]?
A) 400% B) 20% C) 25% D) 500% E) 80%
Nuclear fission plants generate no pollution
What will be an ideal response?
Determine the drag force acting per unit length in a 1 in diameter steel cable when air at 60ºF, 14.7 psia moves trasnversely (perpendicularly) across the cable at 30 mph.
