A circuit consists of a 11.4-mH coil, a 19-? resistor, a 5.0-? resistor, a 10-V battery and a switch, all in series. What is the time constant of this circuit?

a. 2.1E–3 s
b. 4.8E–3 s
c. 2.9E–3 s
d. 4.8E–4 s
e. 4.2E–1 s


d

Physics & Space Science

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An object moving at 30 m/s has an acceleration of -2.0 m/s/hr. Its speed

A. decreases very quickly. B. decreases very slowly. C. increases very slowly. D. increases very quickly.

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a. Both are uncharged. b. Both have spin ?. c. Both can carry different amounts of momentum. d. Choose this answer if all of the above are true.

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