The absolute temperature of a monatomic ideal gas is directly proportional to which of the following properties, when taken as an average, of the molecules of that gas?
a. speed
c. mass
b. momentum
d. kinetic energy
D
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A ______________________ universe is Sun centered
Fill in the blank(s) with correct word
Angular Momentum: A uniform 135-g meter stick rotates about an axis perpendicular to the stick passing through its center with an angular speed of 3.50 rad/s. What is the magnitude of the angular momentum of the stick?
A. 0.0394 kg ? m2/s B. 0.473 kg ? m2/s C. 0.0739 kg ? m2/s D. 0.158 kg ? m2/s E. 0.0236 kg ? m2/s
Mass on a Spring: A mass on a spring undergoes SHM. When the mass is at its maximum distance from the equilibrium position, which of the following statements about it are true? (There could be more than one correct choice.)
A. Its acceleration is zero. B. Its speed is zero. C. Its elastic potential energy is zero. D. Its kinetic energy is a maximum. E. Its total mechanical energy is zero.
Auroras near the poles of the planets
a. are found on Earth. b. are found on Jupiter. c. indicate the presence of a magnetic field. d. occur when particles in the solar wind hit a planet’s atmosphere. e. all of the above.