Monatomic, diatomic, and polyatomic ideal gases each undergo slow adiabatic expansions from the same initial volume and the same initial pressure to the same final volume. The magnitude of the work done by the environment on the gas:
A. is greatest for the polyatomic gas
B. is greatest for the diatomic gas
C. is greatest for the monatomic gas
D. is the same only for the diatomic and polyatomic gases
E. is the same for all three gases
Answer: A. is greatest for the polyatomic gas
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A negatively-charged particle is slowly moving as it enters a region that has a constant magnetic field. If the velocity of the particle is initially perpendicular to the magnetic field, what will be the subsequent motion of the particle?
a) It will follow a helical path around the magnetic field lines. b) It will follow a circular path in the plane perpendicular to the magnetic field lines. c) It will follow a straight line path in the same direction as it was initially traveling. d) It will follow a circular path in a plane parallel to the magnetic field lines. e) It is impossible to predict the path the particle will follow.
The flux through a coil changes from 4 × 10-5 Wb to 5 × 10-5 Wb in 0.1 s. What emf is induced in this coil?
A) 5 × 10-4 V B) 1 × 10-4 V C) 4 × 10-4 V D) 3 × 10-4 V E) 7 × 10-4 V
Ganymede is larger than Mercury, but it is not classified as a planet because it orbits Jupiter as opposed to the sun
Indicate whether the statement is true or false
A boxcar of mass 125 tons at rest becomes uncoupled on a 2.0° grade. If the track is considered to be frictionless, what speed does the boxcar have after 9.0 seconds?
a. 4.0 m/s b. 0.038 m/s c. 31 m/s d. 3.1 m/s e. 0.31 m/s