A locomotive is pulling three wagons along a level track with a force of 100,000 N. The wagon next to the locomotive has a mass of 70,000 kg, the next one, 50,000 kg, and the last one, 80,000 kg. Neglect friction
What is the force between the 70,000-kg and 50,000-kg wagons? A) 35,000 N
B) 40,000 N
C) 50,000 N
D) 60,000 N
E) 65,000 N
E
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An RLC series circuit has a 200 
resistance, a 3.00 mH inductor, and a 100 ?F capacitor. What is the resonant frequency for this circuit?
A. 1.80 kHz B. 1.80 MHz C. 290 Hz D. 290 kHz E. 11.0 kHz
Islamic scholars ________.
A. influenced the naming of bright stars B. made detailed studies of the motions of the planets C. developed algebra D. studied and expanded upon older texts in astronomy E. All of these choices are correct.
Exhibit 12-2
The figure below shows a graph of angular velocity versus time for a man bicycling around a circular track.
?
?
Use this exhibit to answer the following question(s).
Refer to Exhibit 12-2. What is his average angular acceleration, in rad/s2, in the first 10 minutes?
A.
B.
C.
D.
E.
The smaller portion of a solution is generally called the
a. salt. b. solute. c. molar concentrate. d. solvent.