3 years ago

In the video, you saw that models must sometimes be changed. why does that happen?

Physics

2 answers:

Zielflug [23.3K]3 years ago

5 0

Models often need to be changed and updated based on new evidence.

inn [45]3 years ago

4 0

Because scientific data and discoveries will always keep coming out, so models must be updated from time to time.

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It will go left or right

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3 years ago

While John is traveling along an interstate highway, he notices a 150 mi marker as he passes through town. Later John passes a 1

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Answer:

Part a)

distance = 112 miles

Part b)

current position = 112 miles from the position of town

Explanation:

Part a)

Since the distance marker is showing the distance between the town and the position of john at all time

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$d = 112 miles$

Part b)

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4 years ago

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3 years ago

An unstable atomic nucleus has a mass of 17.010-27kg, and starts out at rest. When it decays, it the original nucleus disintegra

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Answer:

Part a)

$v = -(8.33\hat j + 9.33\hat i)\times 10^6 m/s$

Part b)

$E = 4.4 \times 10^{-13} J$

Explanation:

As per momentum conservation we know that there is no external force on this system so initial and final momentum must be same

So we will have

$m_1v_1 + m_2v_2 + m_3v_3 = 0$

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Part b)

By equation of kinetic energy we have

$E = \frac{1}{2}m_1v_1^2 + \frac{1}{2}m_2v_2^2 + \frac{1}{2}m_3v_3^2$

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$E = 9\times 10^{-14} + 6.72 \times 10^{-14} + 2.82\times 10^{-13}$

$E = 4.4 \times 10^{-13} J$

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3 years ago

Assuming the carbon cycle is a closed system, which of the following statements is true?

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Please add answer options :)

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4 years ago

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