Thomas Jefferson is arguably the most important person in American history. The guiding principle of this experiment in representative Democracy is that our government derives its powers from those it governs.Explanation:

4 0

2 years ago

During middle adulthood, which of the following are factors related to sleep disturbances and sleep disorders

Elanso [62]

A harder time falling asleep is the factor that may be related to sleep disturbances and sleep disorders.

What are sleep disorders?

This is the term that is used to refer to all forms of disturbances that may keep a person awake at night even though they may want to sleep.

This would have the person having difficulty being able to rest well. This may get worse in old age. Sleep disorders have being linked to be due to several issues.

These issues may include

Depression
anxiety
medical conditions

Read more on sleep disorder here: brainly.com/question/934341

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5 0

2 years ago

What stands on four legs in the morning two legs in the afternoon and trlhree legs at night?

Aleksandr [31]

Riddle??
It would a person.
Four legs- when a baby
two legs- adult life
three legs- when an elderly walks with a cane and their feet

Hoped this helped.

~Bob Ross®

8 0

3 years ago

Read 2 more answers

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

notsponge [240]

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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7 0

1 year ago