A spinning disk of radius 0.8 m and mass M is spinning on the wall clockwise. You see a dot cross the same point on the wall every 5 seconds. The angular momentum of the disk is and points [into the wall, out towards you].

because if the tool that you are using is not balanced it there would be false mass.

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