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2 years ago

Watch out for semi trucks making ______.

Social Studies

1 answer:

miskamm [114]2 years ago

4 0

Be careful with semi-trucks making a) loud noises

Some not unusual synonyms of loud are earsplitting, raucous, stentorian, and strident. even as these types of phrases suggest "marked through intensity or volume of sound," loud applies to any extent above normal and may suggest undue vehemence or obtrusiveness.

Loud sound has an excessive volume even as soft sound has a low quantity. Banging of a hammer and a vehicle's horn are examples of loud sounds whilst gambling of a piano and sound of blowing wind are examples of gentle sounds. Sound: it is a form of electricity produced by way of vibrating our bodies.

The sound waves journey through the ear canal to attain the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to 3 tiny bones in the center ear. those bones expand, or boom, the sound vibrations and send them to the inner ear.

Learn more about loud noises here: brainly.com/question/718389

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3 years ago

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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2 years ago

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4 years ago