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sleet_krkn [62]
4 years ago
8

Which type of rock would form from a lava following a volcanic eruption

Physics
1 answer:
melisa1 [442]4 years ago
5 0

When lava reaches the surface of the Earth through volcanoes or through great fissures the rocks that are formed from the lava cooling and hardening are called extrusive igneous rocks. Some of the more common types of extrusive igneous rocks are lava rocks, cinders, pumice, obsidian , and volcanic ash and dust.

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Ulleksa [173]

Answer:

1.27\:\text{s}

Explanation:

We can use the following kinematics equation to solve this problem:

v_f=v_i+at

Solving for t:

-24.5=-12.1+-9.8t,\\-12.4=-9.8t,\\t=\frac{-12.4}{-9.8}\approx \boxed{1.27\:\mathrm{s}}

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3 years ago
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When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular. b. is perpendi
never [62]
Hi Pupil Here's Your answer :::


➡➡➡➡➡➡➡➡➡➡➡➡➡


When an object is moving with uniform circular motion, the centripetal acceleration of the object \textbf{is\:Zero}.


Because the body is moving with a uniform velocity and hence, there might not be any acceleration due to it.


⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅



Hope this helps .......
5 0
3 years ago
In order to effectively radiate a radio signal, an antenna must be at least one-half the wavelength of transmission in length, i
Virty [35]
<span>The equation that relates Wavelength & frequency of electromagnetic waves is : Velocity (c) = Wavelength (λ) * frequency (f) ------ (1) Electromagnetic wave velocity (c) = Speed of Light = 3 * 10^8 m/s From (1), Wavelength , λ = c / f λ= (3*10^8)/(980*10^3) λ = 306.12 m Minimum height of the antenna for effective transmission = λ * 0.5 = 306.12*0.5 Answer : 153 m (rounded off)</span>
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Answer:

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Explanation:

can't believe you don't know how to do this.

3 0
3 years ago
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