Outgassing is
a. the adding of material to an object an atom or molecule at a time.
b. the adding of material to an object by collection of solid particles.
c. the release of gas from rocks as they are heated.
d. the largest of the Galilean satellites.
e. caused by the bombardment of the solar wind.
C
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Shock waves occur when
A) the wave source is traveling at a speed greater than the wave speed. B) the frequency of the waves is the resonant frequency of the system. C) the amplitude of waves exceeds the critical shock value. D) the period of the waves matches the lifetime of the waves. E) two waves from different sources collide with each other.
Compared to Earth, Venus has:
A) a more transparent atmosphere. B) a lower average surface temperature. C) a far greater percentage of its surface in low-level ocean basins. D) about the same percentage of its surface in raised continents. E) a far greater percentage of its surface in raised continents.
A.A B.B C.C D.D E. Toward the viewer F. Away from the viewer T. The field is zero.
The site from which an airplane takes off is the origin. The x axis points east; the y axis points straight up. The position and velocity vectors of the plane at a later time are given by
?
m and 
m/s.
?
The plane is most likely
A. just touching down. B. in level flight in the air. C. ascending. D. descending. E. taking off.