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stiv31 [10]
3 years ago
10

Match the rocks with the material they are made of.

Physics
2 answers:
laila [671]3 years ago
3 0
Igneous rocks is the third one
Metamorphic is 2nd
sed rocks is 1st
ur welcome my dude ✌
Pie3 years ago
3 0

Answer:

1st box: Sedimentary rocks

2nd box:metamorphic rock

3rd box: igneous rock

Explanation:

Sedimentary rocks are rocks formed from weathered pieces of rocks (sediments)  which have accumulated over a period of time. An example of a sedimentary rock is limestone

Metamorphic rocks are rocks that have been reformed as a result of long term effects of high temperature and pressure. they can be said to ave changed or metamorphosed from their original state which could be igneous , sedimentary or even metamorphic. example is marble

igneous rocks are solidified hot molten magma which have become cooled after a period of time. An example is granite

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If the intensity level of one trombone is 70 dB, calculate a reasonable estimate for the intensity level of 76 trombones all pla
kogti [31]

Answer:

 β₂ = 88.8 dβ

Explanation:

The intensity of the sound is

        β = 10 log (I / I₀)

The sensitivity threshold (I₀) for humans is 1 10⁻¹² W / m²

       I = I₀  10^{\beta /10}

       I = 10⁻¹² 10^{70/10}  

       I = 1 10⁻⁵ W / m²

The total intensity for the 76 trombones is

         I_total = n I

         I_total = 76 1 10⁻⁵

         I_total = 76 10⁻⁵ W / m²

Let's find the sound level

       β₂ = 10 log (76 10⁻⁵ / 10⁻¹²)

       β₂ = 88.8 dβ

8 0
3 years ago
Remember to identify all your data, write the equation, and show your work.
Paraphin [41]

Answer:

I believe it's 8.09 seconds, but I'm rusty on my physics.

Explanation:

The equation for solving the time it takes for an object to fall is \sqrt{2d/g}

So multiply the distance times 2, and you get 642 meters. Then you divide by gravities acceleration constant, 9.8, and you get 65.51. Finally, \sqrt{65.51}, and you get 8.09 seconds.

I pulled the equation off of wikipedia and I'm unsure if it's the correct one, so hopefully this is correct. :/

6 0
3 years ago
Describe the movement of particles at the melting point of a substance with temperature and energy.
Gnesinka [82]

Answer:

As a substance reaches the melting point, the particles begin to move faster, causing the substance to become a liquid.

Explanation:

lmk if you need a different or more detailed answer :)

have a wonderous day <3

7 0
3 years ago
When a high-mass star explodes, which of the following is left over in the center?
il63 [147K]
I would say option D, it depends on the size of the star
8 0
3 years ago
What is the magnitude of the orbital velocity of the earth in m/s?
Lana71 [14]
Circumference C=2πr 
<span>C=2π(1.5x10^8)=9.42x10^8 </span>

<span>In 365 Days there are 8760hr </span>

<span>V=distance/time </span>

<span>V=(9.42x10^8)/8760=107534.2km/hr </span>
8 0
3 years ago
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