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At t = 0, the current through a 65.0 mH inductor is 52.0 mA and is increasing at the rate of 100 mA/s.
What is the initial energy stored in the inductor?
____________ J
How long does it take for the energy to increase by a factor of 10 from the initial value?
_________________ s
A 4.0 kg mass is hung vertically from a spring with a spring constant of 510 N/m. It is pulled down from its equilibrium position by 2.0 cmand allowed to oscillate. What are the period and frequency of oscillation
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