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3 years ago

The movement to end slavery

Social Studies

1 answer:

tino4ka555 [31]3 years ago

8 0

Answer:

It's called the Abolitionist movement

Explanation:

The movement was originally started in 1830. At first, this movement did not gained a lot of public support. But Activists keep pushing the movement by doing two main things:

- highlighting the cruel actions that the slave owners often done to the slaves. Questioning the morality of the supporters of slavery by supporting that type of treatments to other human beings.

- By promoting the idea that United States no longer need to use slaves labors due to the technological advancement made durign the industrial revolution.

The movements started to gradually gained popularity in the Northern States, but not so much in southern states. This led to the civil war to abolish slavery that occurred in 1861.

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How fast must an object move before its length appears to be contracted to one-half its proper length?

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The object must move with the speed of $\frac{\sqrt{3} }2}$ times to approximately seeing that it is contracted to exactly half of its actual length.

<h3>How is this calculated?</h3>

The length contraction experimented by the object as it approaches lightspeed, in meters per second, is described by Lorentz contraction formula:

$\frac{L}{L'} = \sqrt{(1) - (\frac{v}{c})^{2}$

Here, v is the current speed m/s

c is the speed of light in m/s

L' is the length of the object at rest in m

L is the length of the object at the current speed in m

Now we know that

$\frac{L}{L'}= \frac{1}{2}$ and $\frac{v}{c} = r$ then,

$\frac{1}{2} = \sqrt{1 - r^{2} }\\\frac{1}{4} = 1 - r^{2}\\r^{2} = \frac{3}{4}$

Hence, r = $\frac{\sqrt{3} }{2}$

Therefore, the answer is the object must travel at a speed of $\frac{\sqrt{3} }{2}$ times the lightspeed to be contracted to one-half its proper length.

To know more about the Lorentz contraction formula, visit:

brainly.com/question/17407131

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dunno if it will help....

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