____________ are Kuiper belt objects that are in a 3:2 resonance orbit with the orbit of Neptune
a. Plutinos
b. Charons
c. Protons
d. Lepton
e. Resonons
a
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Potential: The electron-volt is a unit of
A. charge. B. electric potential. C. electric field. D. electric force. E. energy.
Solenoid: An ideal solenoid that is 34.0 cm long is carrying a current of 2.00 A. If the magnitude of the magnetic field generated at the center of the solenoid is 9.00 mT, how many turns of wire does this solenoid contain? (?0 = 4? × 10-7 T ? m/A)
A. 860 B. 1590 C. 2320 D. 3180 E. 1220
Two planets travel in circular orbits about a star. The period of planet A is T, while that of planet B is 3T. What is the ratio of the orbital radii, 
A. 0.33 B. 0.19 C. 0.48 D. 0.69
The horizontal acceleration of a projectile
a. is zero b. stays constant c. continuously increases d. continuously decreases e. sometimes decreases and sometimes increases