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Nataly_w [17]
4 years ago
7

The ancient city of Pompeii was destroyed when a mixture of hot volcanic gasses, ash, and rock pored down Mount Vesuvius and cov

ered the city. Which two terms describe the substance that was produced by the volcano?
Physics
2 answers:
Alex4 years ago
5 0

Hello there,

The answers are  Pyroclastic flow and Tephra

Hope this helps if so please mark brainiest!

Bad White [126]4 years ago
4 0

the pyroclastic fallout that came from the volcano killed more than 13,000 people

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A 12.0 kg block rests on an inclined plane. The plane makes an angle of 31.0° with the horizontal, and the coefficient of fricti
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Answer:

The acceleration of each of the two blocks and the tension in the rope are 5.92 m/s and 147.44 N.

Explanation:

Given that,

Mass = 12.0 kg

Angle = 31.0°

Friction coefficient = 0.158

Mass of second block = 38.0 kg

Using formula of frictional force

f_{\mu} = \mu N....(I)

Where, N = normal force

N = mg\cos\theta

Put the value of N into the formula

N =12\times9.8\times\cos 31^{\circ}

N=100.80\ N

Put the value of N in equation (I)

f_{mu}=0.158\times100.80

f_{mu}=15.9264\ N

Now, Weight of second block

W = mg

W=38.0\times9.8

W=372.4\ N

The horizontal force is

F = mg\sintheta

F=12\times9.8\times\sin 31^{\circ}

F=60.5684\ N....(II)

(I). We need to calculate the acceleration

a=m_{2}g-\dfrac{f_{\mu}+mg\sin\theta}{m_{1}+m_{2}}

a=\dfrac{372.4-(15.9264+60.5684)}{12+38}

a=5.92\ m/s^2

(II). We need to calculate the tension in the rope

m_{2}g-T=m_{2}a

-T=38\times5.92-38\times9.8

T=147.44\ N

Hence, The acceleration of each of the two blocks and the tension in the rope are 5.92 m/s and 147.44 N.

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