How will the domains in an iron nail behave when it is surrounded by a current carrying wire?

real, smaller and upside-down.   so the answer should be b.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j