Answer:
The total energy can be expressed as 
Explanation:
The problem states that
The Poynting vector, which measures energy flux, equals 
The rectangle's length is represented by 
The width of the rectangle is
The duration considered is 
Mathematically, the overall electromagnetic energy incident on the area is given by

where A denotes the area of the rectangle, calculated as

By plugging in the respective values


Again substituting values


Explanation:
Please refer to the attachment for the solution.
Answer: damping coefficient = 1.5×10^5Ns/m
Explanation:
Refer to the attached file for the solution