The three largest asteroids are:
A) Pluto, Sedna, and Quaoar.
B) Deimos, Phobos, and Athos.
C) Ida, Gaspra, and Mathilde.
D) Ceres, Pallas, and Vesta.
E) Halley, Hale-Bopp, and Hyakutake.
D
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A barbell is easier to twist when its weights are
a. close to the axis of rotation. b. near the ends of the bar. c. heavy. d. light. e. none of the above.
Circular Motion of Charges: An electron moving perpendicular to a uniform magnetic field of 3.2 × 10-2 T moves in a circle of radius 0.40 cm. How fast is this electron moving? (e = 1.60 × 10-19 C, melectron = 9.11 × 10-31kg)
A. 2.2 × 107 m/s B. 1.9 × 107 m/s C. 1.9 × 106 m/s D. 3.0 × 107 m/s E. 0.80 × 107 m/s
Identify the falsi?able statement below
A) President Kennedy's murder was orchestrated by an undetectable shadow government of the United States. B) The Sun is at the center of the solar system. C) The laws of nature are magni?cent and beautiful. D) The universe was created by God.
A ball vibrates back and forth from the free end of an ideal spring having a force constant (spring constant) of 20 N/m. If the amplitude of this motion is 0.30 m,
what is the kinetic energy of the ball when it is 0.30 m from its equilibrium position? A) 0.00 J B) 0.22 J C) 0.45 J D) 0.90 J E) 1.4 J