The energy in an oscillating lc circuit containing a 1.57 h inductor is 5.96 μj. the maximum charge on the capacitor is 205 μc. for a mechanical system with the same period, find the (a) mass, (b) spring constant, (c) maximum displacement, (d) maximum speed.

May someone explain how to do this question?

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

Will you chech and finish these for me, because i am stumped with them.