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klasskru [66]
3 years ago
14

2. True or false. As a wave travels through a given material its velocity changes.​

Physics
1 answer:
laila [671]3 years ago
6 0

Answer:

ture

Explanation:

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Most of the Earth's volcanoes occur
timofeeve [1]

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A.

Explanation:

NEAR THE CENTER OF TECTONIC PLATES.

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How does vegetation in the soil affect the rate of erosion
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Plants slow down water as it flows over the land and this allows much of the rain to soak into the ground. Plant roots hold the soil in position and prevent it from being blown or washed away. Plants break the impact of a raindrop before it hits the soil, reducing the soil's ability to erode.

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Question:<br> the distance of the car can move by velocity 15 m/s for time 5s is :<br> Physics
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c) 2.05

Explanation:

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2 years ago
A 4.0 kg object will have a weight of approximately 14.8 N on Mars. What is the gravitational field strength on M
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Answer:

Gravitational field strength =weight/mass

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3 0
2 years ago
Suppose that you are holding a pencil balanced on its point. If you release the pencil and it begins to fall, what will be the a
Naily [24]

Answer:

The angular acceleration of the pencil<em> α  = 17 rad·s⁻²</em>

Explanation:

Using Newton's second angular law or torque to find angular acceleration, we get the following expressions:

    τ = I α                              (1)

    W r = I α                          (2)

The weight is that the pencil has is,

   sin 10 = r / (L/2)

   r = L/2(sin(10))

 

The shape of the pencil can be approximated to be a cylinder that rotates on one end and therefore its moment of inertia will be:

    I = 1/3 M L²

Thus,

   mg(L / 2)sin(10) = (1/3 m L²)(α) 

   α(f) = 3/2(g) / Lsin(10)

   α  = 3/2(9.8) / 0.150sin(10)

  <em> α  = 17 rad·s⁻²</em>

Therefore, the angular acceleration of the pencil<em> </em>is<em> 17 rad·s⁻²</em>

3 0
3 years ago
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