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Bengynease2598
15.04.2020 •
Physics
As altitude increases in the troposphere and stratosphere the air temperature
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Ответ:
Explanation:
Our atmosphere has different layers. The lowest layer is called as troposphere which extends up to 10 - 20 km from the surface depending on where you are on Earth. Most of the weather phenomenon occur in this region only. As we go to higher altitude in this region the temperature decreases at a rate of around 6.5 C per km.
The second layer above this is known as stratosphere which extends up to around 50 km from the surface. This part contains most of the ozone layer. Ozone layer is responsible for protecting us from UV radiation from the Sun. This layer absorbs the UV radiation thus the temperature in this layer increases with altitude.
Ответ:
Answer
The Value of r = 0.127
Explanation:
The mathematical representation of the two resistors connected in series is
And from Ohm law
The mathematical representation of the two resistors connected in parallel is
From the question![I_p =10I_s](/tpl/images/0560/2397/1a4a3.png)
=>![I_p =10I_s = \frac{V_0 }{\frac{R_1R_2}{R_1 +R_2} } = \frac{V_0 (R_1 +R_2)}{R_1 R_2}---(2)](/tpl/images/0560/2397/06198.png)
Dividing equation 2 with equation 1
=>![\frac{10I_s}{I_s} =\frac{\frac{V_0 (R_1 +R_2)}{R_1 R_2}}{\frac{V_0}{R_1 +R_2}}](/tpl/images/0560/2397/61b3e.png)
We are told that![r = \frac{R_1}{R_2} \ \ \ \ \ = R_1 = rR_2](/tpl/images/0560/2397/fe58e.png)
From equation 3
Using the quadratic formula
a = 1 b = -8 c =1
Now r = 0.127 because it is the least value among the obtained values