Which moon has a thick atmosphere made mostly of nitrogen?
A) Europa B) Titan C) Triton D) Ganymede
B
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Identify the FALSE statement. Differentiation of large planetesimals and protoplanets:
is the process by which these bodies develop internal layering. began with heating up component materials within these bodies. was caused by heat created by the transformation of kinetic energy from collisions into thermal energy. was inhibited if radioactive elements were present because their decay required heat input from the surroundings. resulted in a central ball of iron alloy (the core) and an outer shell of lighter rocky materials (the mantle.)
An alpha particle is moving at a speed of 5 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 4 × 10-2 T. The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg
(a) The radius of the path of the alpha particle is (b) The time it takes the alpha particle to complete one revolution around its path is
If the part of an iceberg that extends above the water were suddenly removed, the
A) iceberg would sink. B) buoyant force on the iceberg would decrease. C) density of the iceberg would change. D) pressure on the bottom of the iceberg would increase. E) none of the above
The energy dissipated in a light bulb in a circuit is provided by the
A) lamp filament itself. B) wires leading to the lamp. C) voltage source. D) none of the above