All the following statements are true. Which one follows directly from Kepler's third law?
A) Venus takes longer to rotate than it does to orbit the Sun.
B) Venus has a thicker atmosphere than Mercury.
C) Venus orbits the Sun at a slower average speed than Mercury.
D) Venus is more massive than Mercury.
C
You might also like to view...
The cosmic microwave background gives us a view of the universe when it was
A) 380,000 years old. B) 14 billion years old. C) about 1 million years old. D) 3-5 minutes old.
Movement of water erodes stream channels. The main source of erosion comes from
A) physical abrasion. B) chemical erosion. C) laminar flow. D) lithification.
Stand a meterstick on its end and let it rotate to the floor. If you attach a heavy glob of clay to its upper end and repeat, the time to fall will be
A) shorter. B) longer. C) the same.
Mutual Inductance: A 73-mH solenoid inductor is wound on a form that is 0.80 m long and 0.10 m in diameter. A coil having a resistance of 7.7 ? is tightly wound around the solenoid at its center. The mutual inductance of the coil and solenoid is 19 ?H. At a given instant, the current in the solenoid is 820 mA and is decreasing at the rate of 2.5 A/s. At the given instant, what is the induced current in the coil?
A. 6.2 ?A B. 4.9 ?A C. 7.4 ?A D. 8.6 ?A E. 9.9 ?A