Answer:
Explanation:
Given
Force 
time interval 
Impulse is given by 
For two significant Figure

Explanation:
It is given that,
Inductance,
RMS value of voltage,
Frequency, f = 60 Hz
We need to find the energy stored at t = (1 /185) s. It is assumed that energy stored in the inductor is zero at t = 0. So,
The current flowing through the inductor is given by :

I = 0.091 A
Energy stored in the inductor is, 

U = 0.000165 Joules
Hence, this is the required solution.
The number of protons
number of neutrons=the mass number- number of protons
14-6=8
To keep the energy going every day