Find the energy stored in a 90cm length of a laser beam operating at 10mW.

Find the energy stored in a 60cm length of a laser beam operating at 6mW.

(i) Find the energy stored in a 90 cm length of a laser beam operating at 6 mW . (ii) Find the amplitude opf electric field in a parallel beam of light of intensity 17.7 W//m^(2) .

(i) Find the energy stored in a 90 cm length of a laser beam operating at 6 mW . (ii) Find the amplitude opf electric field in a parallel beam of light of intensity 17.7 W//m^(2) .

(a) Find the energy stored in a 90 cm length of a laser beam operating at 5mW . (b) Find the amplitude of the electric field in a parallel beam of light of intensity 8.85 W..m^(2) .

Find the energy stored in a 60 cm length of a laser beam operating at 4 m W.

Find the energy stored in a 60 cm length of a laser beam operating at 4 m W.

Find the energy stored in a 60 cm length of a laser beam operating at 4 m W.

Find energy stored in a 30 cm length of a laser beam operating at 6 mW.

Find energy stored in a 30 cm length of a laser beam operating at 6 mW.

A laser beam is operating at 100 mW. The amount of energy stored by 90 cm length of this laser beam will be