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3 years ago

No-till farming helps to conserve soil fertility because

Physics

1 answer:

zubka84 [21]3 years ago

7 0

Answer:

a) remnants of the previous crop are left to slowly decay

Explanation:

No-till farming also called zero tillage farming is an agriculture technique or way of growing crops without disturbing the soil through tillage.

No-till cultivation is meant to enhance the amount of water infiltrating the soil, the preservation of organic matter by the soil, and its nutrient cycling. It can reduce soil erosion in a few agricultural areas.

Here correct answer is a) remnants of the previous crop are left to slowly decay

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Answer:

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3 years ago

A 15-ft3 tank contains oxygen initially at 14.7 psia and 80°F. A paddle wheel within the tank is rotated until the pressure insi

Nikolay [14]

Explanation:

Equation for energy balance will be as follows.

$\Delta E_{system} = E_{in} - E_{out}$

$\Delta U = W_{in} - Q_{out}$

Hence, $W_{in} = Q_{out} + mC_{v} (T_{2} - T_{1})$

Therefore, we will calculate the final temperature as follows.

$\frac{P_{1}V}{T_{1}} = \frac{P_{2}V}{T_{2}}$

$T_{2} = \frac{20 psia}{14.7}(638 R)$

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Now, we will calculate the mass as follows.

m = $\frac{P_{1}V}{RT_{1}}$

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= 1.031 lbm

Hence,

$W_{in} = Q_{out} + mC_{v} (T_{2} - T_{1})$

Putting the values into the above equation as follows.

$W_{in} = Q_{out} + mC_{v} (T_{2} - T_{1})$

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3 years ago

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Answer:

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Explanation:

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3 years ago

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Answer:

Water gains energy during evaporation and releases it during condensation in the atmosphere

Explanation:

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In evaporation, water molecules gains energy because the molecules of water vibrate faster and become more energetic. Hence they are able to escape into the atmosphere from the surface of the liquid.

In condensation, the molecules of gaseous water looses energy and becomes liquid.

Hence, water gains energy during evaporation and releases it during condensation in the atmosphere.

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3 years ago

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