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astraxan [27]
3 years ago
7

Which factors improve soil fertility? Select the three correct answers. A. Humus B. Bedrock C. Horizon D. Nitrogen E. Manure

Physics
2 answers:
Katyanochek1 [597]3 years ago
5 0

Correct answer choices are :

A) Humus

E) Manure

D) Nitrogen


Explanation:


Soil fertility leads to the capability of a soil to support agricultural plant growth, i.e. to produce plant environment and occur in continued and steady yields of high quality. A fertile soil will include all the important nutrients for basic plant nourishment, as well as other nutrients required in smaller amounts.

alisha [4.7K]3 years ago
4 0
<h3><u>Answer;</u></h3>
  • <em>Humus</em>
  • <em>Manure</em>
  • <em>Nitrogen</em>
<h3><u>Explanation;</u></h3>
  • <em><u>Soil fertility is a characteristic of soil</u></em> that refers to the capability of soil to maintain and provide a suitable habitat for growth of agricultural crops, thus resulting to continuous productivity.
  • <em><u>The fertility of soil</u></em> may be influenced or enhanced by various factors which includes, <u><em>the soil structure, organic matter, soil pH, and water retention among other factors. </em></u>
  • <em><u>Humus, nitrogen, and manure </u></em>are among the factors that boosts or improves soil fertility, and thus enhances growth and sustainability of agricultural crops by the soil.
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Electrical systems are governed by Ohm’s law, which states that V = IR, where V is the voltage, I is the current, and R is the r
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Answer:

\frac{dR(t)}{dt}=0.06\Omega

Explanation:

Since R(t)=\frac{V}{I(t)}, we calculate the resistance rate by deriving this formula with respect to time:

\frac{dR(t)}{dt}=\frac{d}{dt}(\frac{V}{I(t)})=V\frac{d}{dt}(\frac{1}{I(t)})

Deriving what is left (remember that (\frac{1}{f(x)})'=-\frac{1}{f(x)^2}f'(x)):

\frac{d}{dt}(\frac{1}{I(t)})=-\frac{1}{I(t)^2}\frac{dI(t)}{dt}

So we have:

\frac{dR(t)}{dt}=-\frac{V}{I(t)^2}\frac{dI(t)}{dt}

Which for our values is (the rate of <em>I(t)</em> is decreasing so we put a negative sign):

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8 0
3 years ago
How is item A different from Item B?
iris [78.8K]

Explanation:

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8 0
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The magnetic field at the earth's surface can vary in response to solar activity. During one intense solar storm, the vertical c
Natalka [10]

Answer:

EMF = 1684.67 Volts

Explanation:

As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time

So we can say

EMF = \frac{d\phi}{dt}

now we have

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here since magnetic field is constant so we have

EMF = A\frac{dB}{dt}

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A = (190 \times 10^3)(190 \times 10^3)

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3 years ago
A car starts moving from the position of rest with uniform acceleration of 8m/s^calculate the distance travelled by it during 10
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We calculate the coordinates at t₁ = 9 min and t₂ = 10 min, since the 10th minute is between t₁ and t₂.

As it leaves from rest, it means that the initial speed is zero


t₁=9 min=540 s

t₂=10 min=600 s

x₁=at₁²/2=8*540²/2=4*291600=1166400 m

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Δx=x₂-x₁=1440000-1166400=273600 m represents the distance traveled by the car in the 10th minute of travel




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3 years ago
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