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gladu [14]
2 years ago
12

Which is an example of a positive feedback loop? i. warmer temperatures on earth's surface decrease the evaporation of water. ii

. water evaporation creates low-altitude clouds that reflect sunlight back into clouds. iii. water evaporation creates high-altitude clouds which absorb terrestrial energy that would otherwise escape the atmosphere?
Physics
1 answer:
sergejj [24]2 years ago
6 0
It would be "W<span>armer temperatures on earth's surface decrease the evaporation of water."</span>
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Which of these is true of a chemical reaction? (a) energy is always transferred from reactants to products. (b) Energy is transf
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The answer is B: energy is transferred, but it can go to the products or the reactants.
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If 2.0 mol of gas a is mixed with 1.0 mol of gas b to give a total pressure of 1.6 atm, what is the partial pressure of gas a an
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Calculate the current through a 10.0-m long 22-gauge nichrome wire with a radius of 0.321 mm if it is connected across a 12.0-V
Kipish [7]

Answer:

Therefore,

Current through Nichrome wire is 0.3879 Ampere.

Explanation:

Given:

Length = l = 10 meter

Radius = r = 0.321\ mm =0.321\times 10^{-3}\ meter

Resistivity=\rho=1.00\times 10^{-6}\ ohm\ meter

V = 12 Volt

To Find:

Current, I =?

Solution:

Resistance for 0.0-m long 22-gauge nichrome wire with a radius of 0.321 mm if it is connected across a 12.0-V battery given as

R=\dfrac{\rho\times l}{A}

Where,

R = Resistance

l = length

A = Area of cross section = πr²

\rho=Resistivity=1.00\times 10^{-6}\ ohm\ meter

Substituting the values we get

R=\dfrac{1\times 10^{-6}\times 10}{3.14\times (0.321\times 10^{-3})^{2}}

R=\dfrac{1\times 10^{-5}}{3.23\times 10^{-7}}

R=\dfrac{1\times 10^{2}}{3.23}

R=30.95\ ohm

Now by Ohm's Law,

V= I\times R

Substituting the values we get

I=\dfrac{V}{R}=\dfrac{12}{30.95}=0.3876\ Ampere

Therefore,

Current through Nichrome wire is 0.3879 Ampere.

4 0
2 years ago
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What was the change in internal energy (chemical energy plus thermal energy) of the person pulling the block?
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The historical method includes what steps?


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