What is the total translational kinetic energy in a test chamber filled with nitrogen (N2 ) at 2.16 × 105 Pa and 20.7°C?
The dimensions of the chamber are 4.00 m × 5.70 m × 7.40 m. The ATOMIC weight of nitrogen is 28.0 g/mol, Avogadro's number is 6.022 × 1023 molecules/mol and the Boltzmann constant is 1.38 × 10-23 J/K.
5.47 × 107 J
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Fusion depends upon the ________ nuclear force getting the protons to stick together
Fill in the blank(s) with correct word
Regarding Ptolemy's and Copernicus's theories of astronomy, today we find that
A) both theories are useless because they disagree with the highly accurate measurements available today. B) Copernicus's theory is correct. C) Copernicus's theory is still useful, but more accurate theories are available today. D) both theories are false because we know that Kepler's theory is correct and precisely accurate. E) Ptolemy's theory is correct.
The choices describe four hypothetical planets. Which one would you expect to have the hottest interior? (Assume the planets orbit a star just like the Sun and that they are all the same age as the planets in our solar system.)
A) Size: twice as big as Earth Distance from Sun: same as Mercury Rotation rate: once every 6 months B) Size: same as the Moon Distance from Sun: same as Mars Rotation rate: once every 10 days C) Size: same as Mars Distance from Sun: same as Earth Rotation rate: once every 18 hours D) Size: same as Venus Distance from Sun: same as Mars Rotation rate: once every 25 hours
The fastest moving planet in a solar system is the
A) smallest planet. B) most massive planet. C) planet nearest the Sun. D) planet farthest from the Sun. E) all move at the same speed.