A gas is quickly compressed in an isolated environment. During the event, the gas exchanged no heat with its surroundings. This process is
A)
isothermal.
B)
isochoric.
C)
isobaric.
D)
adiabatic.
E)
idealistic.
D
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A(n) ____ emits large amounts of energy but photographically appears to be a single point of light much like a star
a. a planet like Venus b. E galaxy c. spiral galaxy d. double-lobed radio galaxy e. quasar
The type of radiation affected by greenhouse gasses is
a. UV radiation. b. IR radiation. c. visible radiation. d. gamma radiation.
A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30° from its initial direction of motion. What is the y component of the velocity of the 1.0-kg object just after the collision?
a. ?3.7 m/s b. ?3.4 m/s c. ?1.5 m/s d. ?2.4 m/s e. ?4.1 m/s
The temperature increase in the stratosphere is
due to a) Rayleigh scattering. b) absorption of ultraviolet radiation. c) the greenhouse effect. d) photosynthesis.