In general, how does the size and location of a star's habitable zone depend on the star's mass?
A) The smaller (less massive) the star, the larger and the closer-in the habitable zone.
B) The smaller (less massive) the star, the smaller and the closer-in the habitable zone.
C) The smaller (less massive) the star, the larger and the farther-out the habitable zone.
D) The habitable zone is always about the same size, but its location moves inward for smaller stars.
B
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If an applied stress is equal in three perpendicular directions, the stress is _____________.
Fill in the blank(s) with the appropriate word(s).
What do we mean by hyperspace?
A) It is another word for spacetime. B) It is a space through which it is possible to travel very fast. C) It is a space with a hyperbolic geometry. D) Any space with more than three dimensions.
Large molecular clouds will form into protostars because of ____
a. the thermal motions of the atoms in the gas cloud b. gravitational contraction c. radiation pressure from nearby stars d. the temperature reaching a critical point e. condensation of dust and gas
Selena states that 
proves that entropy has a definite value at the beginning and end of an adiabatic free expansion. Ron says 
, where W is the number of microstates of a given macrostate. Which one, if either, is correct?
A.
B.
C.
in an adiabatic free expansion.D.
E.