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Dafna11 [192]
4 years ago
7

What is the wavelength of an earthquake wave if it has a speed of 12 km/s and a frequency of 15 Hz

Physics
1 answer:
professor190 [17]4 years ago
3 0
First change km/ s into m/s, then use the formula
Lambda = velocity/ frequency
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A uniform piece of sheet steel is shaped as in the figure below. (Both axes are marked in increments of 2). Compute the x and y
Elena-2011 [213]
"increments of 8" means the major divisions are 0,8,16,24 ? 

<span>x axis, calculate the moment arms from 0 </span>
<span>3x4, 2x12, 1x20 </span>
<span>from an arbitrary C </span>
<span>3(c-4) + 2(c-12) + (c-20) = 0 </span>
<span>3c - 12 + 2c -24 + c - 20 = 0 </span>
<span>6c = 56 </span>
<span>c = 9.33 </span>

<span>y axis </span>
<span>3x3, 1x12, 2x20 </span>
<span>3(c-4) + 1(c-12) +2 (c-20) = 0 </span>
<span>3c - 12 + c - 12 + 2c - 40 = 0 </span>
<span>6c = 64 </span>
<span>c = 10.67 </span>

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5 0
3 years ago
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When sound is created it travels to the ear through a
kaheart [24]
Sound travels through the ear via compression
6 0
3 years ago
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The heat that builds up in the greenhouse effect initially enters the atmosphere as
Trava [24]

Answer:

Solar radiation

Explanation:

Gases such as methane , ozone, and Carbon dioxide are known as the greenhouse gases. When the gases are heated up they usually build up in the greenhouse effect and after a while they enter the atmosphere as solar radiation.

It is important to note that the release of the gases is usually the first(initial) release of the gases into the atmosphere.

7 0
3 years ago
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Why is Vy negative and not positive because I solved it and it resulted in a positive number?
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Explanation:

You are given the initial velocity, the displacement, and the acceleration.  You're looking for the final velocity.  So you use the equation:

v² = v₀² + 2aΔy

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v = ±√(v₀² + 2aΔy)

You must use the physical context of the problem.  If we take up to be the positive direction, then v must be negative, since the projectile is moving down.

8 0
3 years ago
if a car moves 120 meters west and turns around and travels 20 meters in the opposite direction what is the total displacement?
Mekhanik [1.2K]

Answer:

100 meters

Explanation:

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