Answer:

Explanation:
Provided:
fiber diameter d= 18 μm
screen distance D= 30 cm
wavelength λ= 560 nm
from this, we can determine the fringe width

substituting the values yield


Utilizing Einstein's equation that signifies the relationship between mass and energy:

where
E stands for energy
m represents the object's rest mass
and c denotes the speed of light
By applying this formula and using m=2.5 kg, we can compute the object's equivalent energy:
Thermal Power is approximately 460W. According to the Stephan-Boltzmann Law Formula: P = єσT⁴A, where: P = radiation energy, σ = Stefan-Boltzmann Constant, T = absolute temperature in Kelvin, є = emissivity of the material, and A = the surface area. Given that σ = 5.67 x 10^(-8), ε = 0.6, and T = 30°C which converts to Kelvin as 303K, with the human body dimensions of 2m length and 0.8m circumference leading to an area of 1.6m², so thermal power equals 0.6 x 5.67 x 10^(-8) x 303⁴ x 1.6 = 458.8W. Rounding gives about 460W.
The city evaluates the continuous increase of carbon monoxide from different origins each year. According to calculations, in the year "C: 2019"<span> (rounded to the closest whole number), the concentration of CO will surpass the allowed threshold.
If this is not correct, feel free to inform me and I will find out the right answer. However, I am confident this is accurate.:) </span>