3 years ago

In which medium does sound travel faster

Physics

2 answers:

9966 [12]3 years ago

5 0

It travels fastest through solids.

iVinArrow [24]3 years ago

4 0

Answer:

Solids APEX Verified

Explanation:

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In a Broadway performance, an 83.0-kg actor swings from a R = 3.90-m-long cable that is horizontal when he starts. At the bottom

Veseljchak [2.6K]

Answer:

$h = 2.821\,m$

Explanation:

The speed of the actor before the collision is found by means of the Principle of Energy Conservation:

$(83\,kg)\cdot(9.807\,\frac{m}{s})\cdot (3.90\,m) = \frac{1}{2}\cdot (83\,kg)\cdot v^{2}$

$v = \sqrt{2\cdot (9.807\,\frac{m}{s^{2}} )\cdot (3.90\,m)}$

$v \approx 8.746\,\frac{m}{s}$

The speed after the inelastic collision is obtained by using the Principle of Momentum Conservation:

$(83\,kg)\cdot (8.746\,\frac{m}{s} )+(55\,kg)\cdot (0\,\frac{m}{s} ) = (83\,kg + 55\,kg)\cdot v$

$v = 5.260\,\frac{m}{s}$

Lastly, the maximum height is determined by using the Principle of Energy Conservation again:

$\frac{1}{2}\cdot (138\,kg)\cdot (5.260\,\frac{m}{s} )^{2} = (138\,kg)\cdot (9.807\,\frac{m}{s^{2}} )\cdot h$

$h = \frac{(5.260\,\frac{m}{s} )^{2}}{9.807\,\frac{m}{s^{2}} }$

$h = 2.821\,m$

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3 years ago

What is your zodiac sign?

ahrayia [7]

Answer: Gemini

Explanation: lol I just born that that sign ig

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3 years ago

The ______ length of a lens is the distance from the center of the lens to<br> its principal focus.

Marizza181 [45]

Answer:

<h2>Focal length</h2>

Explanation:

The Focal length of a lens is the distance from the center of the lens to

its principal focus.

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3 years ago

If the Earth rotated more slowly about its axis, your apparent weight would

disa [49]

<span>If the Earth rotated more slowly about its axis, your apparent weight would
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</span>A) increase.

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3 years ago

Claire just purchased a new silk dress for her school’s winter formal. She loves the feel of silk and keeps rubbing it with her

bezimeni [28]

Answer:

would adapt if the dress were held completely still

Explanation:

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3 years ago

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