A 0.50 gas tank holds 3.0 moles of ideal diatomic nitrogen gas at a temperature of The atomic mass of nitrogen is . What is the rms speed of the molecules? (The Boltzmann constant is 1.38 × 10-23 J/K, NA = 6.022 × 1023 molecules/mol.)
A) 560
B) 790
C) 390
D) 21
E) 97
A
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A child pulls on a wagon with a horizontal force of If the wagon moves horizontally a total of in what is the average power generated by the child?
A) 18 W B) 22 W C) 24 W D) 27 W
A locomotive is pulling three wagons along a level track with a force of 100,000 N. The wagon next to the locomotive has a mass of 80,000 kg, the next one, 50,000 kg, and the last one, 70,000 kg. Neglect friction
What is the force between the 80,000-kg and 50,000-kg wagons? A) 35,000 N B) 40,000 N C) 50,000 N D) 60,000 N E) 65,000 N
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H.
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. A. B. B. C. C. D. D. E. E.
Processed meteorites with low metal content probably are
A) leftover chunks of rock from the earliest period in the formation of the solar system. B) pieces of comets rather than of asteroids. C) chunks of a larger asteroid that was shattered by a collision. D) chunks of rock chipped off the planet Mercury. E) chunks of rock chipped off the planet Mars.