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2 years ago

Which of these was a positive development of early farming in the Midwest?

Social Studies

1 answer:

Dafna11 [192]2 years ago

8 0

Answer: John Deere made a new steel plow to make turning the prairies into farmland much easier.

Explanation:

The climate of the Midwest Region enhances its farming as it has a good climate and also, the region has a fertile, and deep soil made up of vital nutrients for the crops that are planted. Some of the crops that were cultivated include corn, squash, sunflowers, beans, sweet potatoes, etc.

A positive development of early farming in the Midwest was that John Deere made a new steel plow to make turning the prairies into farmland much easier. This was vital as it was used in the breaking down of tough soil

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A basketball is dropped from the edge of a cliff at the same time that second basketball is thrown upward from the ground. When

pentagon [3]

Answer:

The collision occurs at a height of 1/3 of the total height of cliff.

Explanation:

The situation is represented in the attached figure:

For the stone dropped from top of cliff we have

Initial velocity of drop= 0 m/s.

Now the time at which it attains a velocity of 2v is obtained from first equation of kinematics as

$v_{f}=u_{i}+gt\\\\2v=0+gt\\\\\therefore t=\frac{2v}{g}$

Thus the distance it covers in this time can be calculated using third equation of kinematics as

$v_{f}^{2}=v_{i}^{2}+2gh\\\\(2v)^{2}=2gh_{1}\\\\\therefore h_{1}=\frac{2v^{2}}{g}$

For the stone thrown upwards the velocity at collision is give as 'v' thus the velocity at which it is thrown upwards can be calculated by first equation of kinematics as

$v=v_{i}-gt\\\\\therefore v_{i}=v+gt\\\\v_{i}=v+g\times \frac{2v}{g}\\\\\therefore v_{i}=3v$

The height over which it changes it's velocity from '3v' to 'v' can be again obtained from third equation of kinematics as

$v^{2}=(3v)^{2}-2gh_{2}\\\\v^{2}=9v^{2}-2gh_{2}\\\\\therefore h_{2}=\frac{4v^{2}}{g}$

$\therefore h_{2}=2h_{1}$

Thus the collision occurs at at a fraction of 1/3 of height.

6 0

3 years ago

"In a resting state, sodium (Na+) "is at a higher concentration outside the cell and potassium (K+) is more concentrated inside

erica [24]

Answer: option B is correct.

Explanation:

Okay let us fill in the gap in the question;

"In a resting state, sodium (Na+) "is at a higher concentration outside the cell and potassium (K+) is more concentrated inside the cell. During an action potential, the sodium levels INCREASE inside the cell''.

The answer is option B. The levels of sodium inside the cell increase because Sodium (Na^+) enters while the potassium (K^+) moves out of the cell and NOT that the sodium(Na^+) leaves/moves out of the cell. The Sodium(Na^+) outside the content of the cell is more positive than the the content of the cell, this will enhance the sodium ion(Na^+) to move inside the cell thereby INCREASING the sodium levels in the cell.

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3 years ago

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natta225 [31]

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3 years ago

After the Constitution was written, it had to be

ikadub [295]

Answer:

it needed to be approved by the ratification process

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3 years ago

Why is camel called "ship of the desert" ? how can it adapt easily in the desert ?

olasank [31]

Answer:

camel wide variety of feet that help to move in sand without sinking into it . camel have a hump that store water a camel can go As without water and Ladt for several months

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3 years ago

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