Answer:
you need to provide a figure that came with the problem.
I think it's true
I'm not really sure
I think your question should be:
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is
What is the rms value of (a) the electric field and
(b) the magnetic field in the electromagnetic wave emitted by the laser
Answer:
a)
b)
Explanation:
To find the RMS value of the electric field, let's use the formula:
Where
;
;
Therefore
b) to find the magnetic field in the electromagnetic wave emitted by the laser we use:
;
;
The part of the question that says " x 10⁶ " means
" move the decimal point 6 places that way ===> ".
So take the 1.986 and do that to it.
If there aren't enough places to move the decimal point far enough,
add some zeros to the 1.986 before you move the point.