A series LR circuit includes a 9.0 V battery, a resistance of 0.50 
and an inductance of 0.80 H. When the switch is closed, how long does it take for the current to reach one half of its maximum value?
A. 0.80 s
B. 1.6 s
C. 2.3 s
D. 1.1 s
E. 0.55 s
D. 1.1 s
Physics & Space Science
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Magnetic Field of a Long Wire: At a point 10 m away from a long straight thin wire, the magnetic field due to the wire is 0.10 mT. What current flows through the wire? (?0 = 4? × 10-7 T ? m/.A
Fill in the blank(s) with the appropriate word(s).
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The energy levels in the atom are continuous
What will be an ideal response?
Physics & Space Science
Firewalking is similar to
A. water on a saucepan B. the space shuttle reentry C. an automobile air bag D. water skiing
Physics & Space Science
Which of the following is not associated with a cold front?
A) thunderstorms B) drop in air pressure C) gradually rising warm air D) clear skies behind the front
Physics & Space Science