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Delvig [45]
3 years ago
7

1. The thin top layer of the crust is called the Crust. What are the two types of

Physics
2 answers:
kolbaska11 [484]3 years ago
8 0
Oceanic and continental
kupik [55]3 years ago
3 0

Answer:

I believe it's D

Lithosphere and Mantle

Explanation:

The Earth's crust is a thin shell on the outside of the Earth, accounting for less than 1% of Earth's volume. It is the top component of lithosphere: a division of Earth's layers that includes the crust and the upper part of the mantle.[9] The lithosphere is broken into tectonic plates that move, allowing heat to escape from the interior of the Earth into space.

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A 49.5 gram super ball traveling at 25.5 m/s bounces off a brick wall and rebounds at 19.5 m/s. a high-speed camera records this
OLga [1]
T = 4.25 ms = 4 x 10⁻³ s, the time for rebound
v₁ = 25.5 m/s, the impacting velocty
v₂ = -19.5 m/s, the rebounding velocity (n the opposite directon)

The change in velocity is
v₂ - v₁ = - (25.5+19.5) = -45 m/s

The acceleration is
a = (-45 m/s)/(4 s) = -11.25 m/s²
The negative sign indicates that the final velocity is opposiye to the impact velocty.

Answer: The magnitude of the acceleration is 11.25 m/s²
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3 years ago
What is the net force on an object when you combine a force of 10n north with a force of 5n south?
svetoff [14.1K]
Let north as positive
Fnet=10n-5n
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Scissors are considered a compound machine because
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They make work easier
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The centripetal force acting on the space shuttle
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The centripetal force acting on the space shuttle as it orbits Earth is equal to the shuttles momentum
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Which statement explains how it is possible to carry books to school without changing the kinetic or potential energy of the boo
Mamont248 [21]

Answer:

a. by moving the book without acceleration and keeping the height of the book constant

Explanation:

FOR CONSTANT KINETIC ENERGY:

The kinetic energy of a body depends upon its speed according to its formula:

ΔK.E = (1/2)mΔv²

So, for Δv = 0 m/s

ΔK.E = 0 J

So, for keeping kinetic energy constant, the books must be moved at constant speed without acceleration.

FOR CONSTANT POTENTIAL ENERGY:

The potential energy of a body depends upon its height according to its formula:

ΔP.E = mgΔh

So, for Δh = 0 m/s

ΔP.E = 0 J

So, for keeping potential energy constant, the books must be moved at constant height.

So, the correct option is:

<u>a. by moving the book without acceleration and keeping the height of the book constant</u>

8 0
3 years ago
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