Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take for a sample of americium to lose one-third of its nuclei?
A) 2960 s
B) 10.6 × 103 years
C) 4.32 × 103 years
D) 6.44 × 103 years
E) 7.84 × 103 years
C
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Which of the following is an example of a nonconservative force?
a. gravity b. magnetism c. friction d. Both choices A and B are valid.
Which of the following devices is placed into a circuit to measure the current that passes through it?
a) ammeter b) gaussmeter c) voltmeter d) diffractometer e) flowmeter
What type of faulting results from stresses parallel to the fault plane?
a. Reverse b. Normal c. Abnormal d. Strike-slip
Which of the following features of the Solar System does the solar nebula hypothesis explain?
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