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marusya05 [52]
3 years ago
12

Which of Earths layers is made up of liquid metal

Physics
1 answer:
wolverine [178]3 years ago
7 0
The outer core is made out of molten lava also known as liquid metal because of all the iron and other metals in it 
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A girl throws a stone from a bridge. Consider the following ways she might throw the stone. The speed of the stone as it leaves
Len [333]

Answer:

the velocity in all the cases will be same.

Explanation:

given,

girl throws a stone from the bridge

air is friction less

we have to find from the given cases in which case the velocity of stone will be greatest.

According to Work energy theorem work done by the sum of all the force is equal to kinetic energy.

As the air is frictionless hence the speed depend upon the height from which the stone is thrown.

height in all the cases is same.

so, the velocity in all the cases will be same.

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2 years ago
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A dart hits a dartboard and stops in 0.060 s. The net force on the dart is 14 N during the collision.
Rainbow [258]

Answer:

<em>The change of momentum of the dart is 0.84 Nw.s</em>

Explanation:

<u>Impulse and change of momentum</u>

The change in momentum of an object is its mass times the change in its velocity:

\Delta p=m\Delta v=m(v_2-v_1)

The change in the momentum can also be found by considering the force acting on it. If a force F acts for a time Δt, the change of momentum is given by:

\Delta p=F.\Delta t

The dart hits a dashboard with a net force of 14 N during the collision and stops in 0.06 seconds. The change of momentum is:

\Delta p=14*0.06=0.84

The change of momentum of the dart is 0.84 Nw.s

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2 years ago
Can anyone plzzzz answer this question... Cuz it's really urgent....
nlexa [21]

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ValentinkaMS [17]

Answer:

because it is from a mathematical combination of SI base units

Explanation:

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