⦁ Determining the magnetic flux, A rectangular piece of stiff paper measures 10 cm x 5 cm. You hold the piece of paper in a unif
1 answer:
You might be interested in
Answer:
434.0 V/m
Explanation:
The power output of the laser is:
while the radius of the beam is
so the cross-sectional area is
So the intensity of the laser beam is
The intensity of a laser beam is related to the magnitude of the electric field by
where
c is the speed of light
is the vacuum permittivity
Solving the formula for E, we find