Why does Saturn radiate even more excess energy than Jupiter?
A) Saturn is still radiating heat left over from its formation.
B) Saturn's thick cloud layer contributes to a larger Greenhouse Effect.
C) Helium rain gives off heat as it differentiates toward Saturn's center.
D) Saturn's atmosphere contains much methane, creating a large Greenhouse Effect.
E) Saturn can fuse hydrogen into helium in its core, like the Sun.
C
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Which is the first postulate of Bohr's model of the atom?
a. The angular momentum of the electron is quantized. b. Light is quantized. c. An electron radiates while it remains in an allowed orbit. d. An electron is not in a precise orbit. e. A photon is emitted whenever an electron jumps up one orbit.
The length of a spaceship is 14 m when it is at rest. If the spaceship travels by you with a speed of 0.80c, what length does it appear to you?
A) 6.3 m B) 8.4 m C) 18 m D) 20 m E) 22 m
The potential (relative to infinity) at the midpoint of a square is 3.0 V when a point charge of +Q is located at one of the corners of the square
What is the potential (relative to infinity) at the center when each of the other corners is also contains a point charge of +Q? A) 12 V B) 9.0 V C) 3.0 V D) 0 V
Simple Harmonic Motion: An air-track cart is attached to a spring and completes one oscillation every 5.67 s in simple harmonic motion. At time t = 0.00 s the cart is released at the position x = +0.250 m. What is the position of the cart when t = 29.6 s?
A. x = 0.0461 m B. x = 0.210 m C. x = 0.218 m D. x = 0.342 m E. x = -0.218 m