_____ are massive objects destined to become planets
A) Planetesimals
B) Protoplanets
C) Preplanets
D) Pseudoplanets
B
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Which of the following is furthest from the Sun?
A) a comet in the Oort cloud B) Pluto C) an asteroid in the asteroid belt D) Neptune E) a comet in the Kuiper belt
A particle (charge 7.5 ?C) is released from rest at a point on the x axis, x = 10 cm. It begins to move due to the presence of a 2.0-?C charge which remains fixed at the origin. What is the kinetic energy of the particle at the instant it passes the point x = 1.0 m?
A. 3.0 J B. 1.8 J C. 2.4 J D. 1.2 J E. 1.4 J
The restriction that no more than one electron may occupy a given quantum state in an atom was first stated by which of the following scientists?
a. Bohr c. de Broglie b. Pauli d. Heisenberg
A Carnot engine operates between two reservoirs with unknown temperatures. If the Carnot engine operates at 67% efficiency, what is the ratio of the absolute temperatures of the reservoirs, Tc/Th?
A) 0.33 B) 0.0012 C) 0.0025 D) 0.67