Tuesday, March 19, 2013

Surfing For Physics Formulas For Power?

William asks…Physics question. Magnetic field, Intensity, power?High power lasers in factories are used to cut
through cloth and metal. One such laser has
a beam diameter of 1.48 mm and generates an
electric field at the target having an amplitude 0.304 MV/m.
The speed of light is 2.99792 × 10^8 m/s
the permeability of free space is 4 ×10^−7 T · N/A.

a.) What is the amplitude of the magnetic field produced (in T)?
b.)What is the intensity of the laser (in w/m^2)?
c.)What is the power

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