According to the planetary migration model, the jovian planets are thought to have formed:
A) in the orbit where they are now.
B) further from the Sun than they are now.
C) in another solar system.
D) closer to the Sun than they are now.
E) None of the above.
B
You might also like to view...
If R1 < R2 < R3, and if these resistors are connected in parallel in a circuit, which one has the highest current?
a. R1 b. R2 c. R3 d. All have the same current.
A massive star can fuse more and more massive nuclei, but this process is limited by the fact that, at some point, an element that is produced ____
a. becomes completely degenerate in the core, changing the pressure-temperature relationship b. cannot produce energy through fusion c. will only fuse in the presence of even more massive nuclei d. is not found in nature e. decays radioactively before it can undergo fusion
A 10-V-emf battery is connected in series with the following: a 2-µF capacitor, a 2.0-? resistor, an ammeter, and a switch, initially open; a voltmeter is connected in parallel across the capacitor. At the instant the switch is closed, what are the current and capacitor voltage readings, respectively?
a.
zero A, 10 V
b.
zero A, zero V
c.
5 A, zero V
d.
5 A, 10 V
Rutherford's experiment, in which he fired alpha particles of 7.7 MeV kinetic energy at a thin gold foil, showed that nuclei were very much smaller than the size of an atom because
a. some alpha particles passed through the foil undeflected. b. some alpha particles were deflected backwards. c. some alpha particles were captured by the gold nuclei. d. the alpha particles could not get closer than 10-10 m to the gold nuclei. e. the alpha particles split into deuterium nuclei when they encountered the gold nuclei.