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LiRa [457]
3 years ago
9

Which statement best describes the circular flow model a- The model represents the movement of money and resources throughout th

e economy b-the model represents the interactions within the sectors c-the model represents the flow of goods and services abroad d-the model represents the changing relationships between actors
Social Studies
1 answer:
Brrunno [24]3 years ago
7 0

Answer:A

Explanation:Circular flow is a model of the economy that exchanges money,goods and services

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How is the dual court system consistent with the principles of federalism?
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The finding that iq scores have increased dramatically over the last century is known as:____.
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1 year ago
A basketball is dropped from the edge of a cliff at the same time that second basketball is thrown upward from the ground. When
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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}

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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.

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3 years ago
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