Which laboratory observation would most support the kinetic theory's assumption that molecules in a gas are widely separated?
a. A gas exerts the same pressure on each part of a container's wall.
b. A gas is highly compressible.
c. A gas with a lower formula mass diffuses more rapidly than one with a higher formula mass.
d. A gas expands when the pressure on it is released.
b
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An object that is initially at rest breaks up into two pieces of unequal masses when a spring-loaded device is released
If you compare the kinetic energy of the larger mass to that of the smaller mass immediately after they separate, which of the following statements is correct? A) The kinetic energy of the larger mass is greater. B) The kinetic energy of the smaller mass is greater. C) The kinetic energies of the two masses are equal. D) The total kinetic energy is zero J.
We do not know for certain whether the general trends we observe in stellar birth masses also apply to brown dwarfs. But if they do, then which of the following would be true?
A) Brown dwarfs would be responsible for most of the overall luminosity of our Milky Way Galaxy. B) Most of the brown dwarfs in the Milky Way Galaxy would be quite young in age. C) Brown dwarfs would outnumber all ordinary stars. D) Brown dwarfs would be extremely rare.
Addition by 1. Components: Vector 
has a magnitude of 4.0 m and points 30° south of east. Vector 
has a magnitude of 2.0 m and points 30° north of west. The resultant vector 
+ 
is given by
A. 10.0 m at an angle 30° south of east. B. 10.0 m at an angle 60° east of south. C. 2.0 m at an angle 60° south of east. D. 2.0 m at an angle 30° south of east. E. 1.0 m at an angle 30° east of south.
The internal energy of a monatomic ideal gas is equal to which of the following?
a. (3/2)PV c. 3T/P b. (3/2)nT/V d. none of these