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Sphinxa [80]
3 years ago
12

__________ is the gradual increase in the temperature of earth’s atmosphere. greenhouse effect air pollution global warming temp

erature inversion
Physics
2 answers:
tamaranim1 [39]3 years ago
8 0
Global warming would be the one 
irina [24]3 years ago
5 0

Answer: <u>Global Warming </u>is the gradual increase in the temperature of earth’s atmosphere.

Explanation:

Due to presence of atmosphere on Earth, the sun radiations are trapped in the lower atmosphere. This rises the temperature of the Earth gradually. This has led to a habitable temperature of the Earth.

With increase in green house gases in the atmosphere recently, more heat is being trapped leading to rise in average temperature of Earth. This is known as Global warming.

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What is the maximum value of the magnetic field at a<br> distance2.5m from a 100-W light bulb?
MA_775_DIABLO [31]

To solve this problem we will apply the concepts related to the intensity included as the power transferred per unit area, where the area is the perpendicular plane in the direction of energy propagation.

Since the propagation occurs in an area of spherical figure we will have to

I = \frac{P}{A}

I = \frac{P}{4\pi r^2}

Replacing with the given power of the Bulb of 100W and the radius of 2.5m we have that

I = \frac{100}{4\pi (2.5)^2}

I = 1.2738W/m^2

The relation between intensity I and E_{max}

I = \frac{E_max^2}{2\mu_0 c}

Here,

\mu_0 = Permeability constant

c = Speed of light

Rearranging for the Maximum Energy and substituting we have then,

E_{max}^2 = 2I\mu_0 c

E_{max}=\sqrt{2I\mu_0 c }

E_{max} = 2(1.2738)(4\pi*10^{-7})(3*10^8)

E_{max} = 30.982 V/m

Finally the maximum magnetic field is given as the change in the Energy per light speed, that is,

B_{max} = \frac{E_{max}}{c}

B_{max} = \frac{30.982 V /m}{3*10^8}

B_{max} = 1.03275 *10{-7} T

Therefore the maximum value of the magnetic field is B_{max} = 1.03275 *10{-7} T

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