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aleksklad [387]
2 years ago
9

List the Layers of Earth in order from Thickest to thinnest using the Data table on the Earth’s interior: (Combine numbers for L

ower and Upper Mantle
)1.________________________________________________________________2. ________________________________________________________________3. ________________________________________________________________4. ________________________________________________________________
Physics
2 answers:
wolverine [178]2 years ago
7 0
1. Crust
2. Mantle
3. Outer core
4. Inner core
stealth61 [152]2 years ago
3 0

Answer:

Crust, Mantle, Outer Core, Inner Core

I hope this helped! :))

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An unruly student with a spitwad (a lump of wet paper) of mass 20 g in his pocket finds himself in the school library where ther
jeka94

Answer:

T = 188.5 s, correct is  C

Explanation:

This problem must be worked on using conservation of angular momentum. We define the system as formed by the fan and the paper, as the system is isolated, the moment is conserved

         

initial instant. Before the crash

        L₀ = r m v₀ + I₀ w₀

the angular speed of the fan is zero w₀ = 0

final instant. After the crash

        L_f = I₀ w + m r v

        L₀ = L_f

        m r v₀ = I₀ w + m r v

angular and linear velocity are related

        v = r w

        w = v / r

        m r v₀ = I₀ v / r + m r v

         m r v₀ = (I₀ / r + mr) v

       v = \frac{m}{\frac{I_o}{r}  +mr} \ r v_o

let's calculate

       v = \frac{0.020}{\frac{1.4}{0.6  } + 0.020 \ 0.6  } \ 0.6 \ 4

       v = \frac{0.020}{2.345} \ 2.4

       v = 0.02 m / s

         

To calculate the time of a complete revolution we can use the kinematics relations of uniform motion

        v = x / T

         T = x / v

the distance of a circle with radius r = 0.6 m

         x = 2π r

we substitute

         T = 2π r / v

let's calculate

         T = 2π 0.6/0.02

         T = 188.5 s

reduce

         t = 188.5 s ( 1 min/60 s) = 3.13 min

correct is  C

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5 0
3 years ago
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Answer:

h f = Wf + K

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Which of the following statements describes Newton's first law?
jeka94

Answer:

F = MA

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Dropping a ball (mass) from the top of a building can show gravity, a form of acceleration.

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