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3 years ago

Why is the core so important to all life on earth

Physics

2 answers:

krok68 [10]3 years ago

4 0

Answer:

Earth's core is important for three main reasons: (1) it is responsible for the generation of Earth's magnetic field; (2) it contains information regarding the earliest history of accretion of the planet; and (3) thermal and compositional features established when the core formed have largely controlled the subsequent

never [62]3 years ago

3 0

Answer:

Earth's core is important for three main reasons:

(1) it is responsible for the generation of Earth's magnetic field;

(2) it contains information regarding the earliest history of accretion of the planet; and

(3) thermal and compositional features established when the core formed have largely controlled the subsequent evolution of the core and also influence the evolution of the mantle, crust, and atmosphere

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who brought astronomy out of the dark ages by declaring: "finally we shall place the sun himself at the center of the universe.

solong [7]

Nicolaus Copernicus was the one who brought astronomy out of the dark ages.

In one of his books "On the Revolutions of the Heavenly Bodies", he published the renowned line which declares his theory.

Nicolaus Copernicus, A polish astronomer put forward the theory that the is th Sun one that rests in the middle or center of the Universe and the planet Earth revolves around it on its axis every day.which was considered to be called the Heliocentric system.

To know more about the Heliocentric system refer to the link brainly.com/question/3491738?referrer=searchResults.

To know about Sir Nicolaus Copernicus' work refer to the link brainly.com/question/6699117?referrer=searchResults.

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2 years ago

A car accelerates in the +x direction from rest with a constant acceleration of a1 = 1.76 m/s2 for t1 = 20 s. At that point the

alex41 [277]

Answer:

(a) $v_1 = a_1t_1 = 1.76 t_1$

(b) It won't hit

Explanation:

(a) the car velocity is the initial velocity (at rest so 0) plus product of acceleration and time t1

$v_1 = v_0 + a_1t_1 = 0 +1.76t_1 = 1.76t_1$

(b) The velocity of the car before the driver begins braking is

$v_1 = 1.76*20 = 35.2m/s$

The driver brakes hard and come to rest for t2 = 5s. This means the deceleration of the driver during braking process is

$a_2 = \frac{\Delta v_2}{\Delta t_2} = \frac{v_2 - v_1}{t_2} = \frac{0 - 35.2}{5} = -7.04 m/s^2$

We can use the following equation of motion to calculate how far the car has travel since braking to stop

$s_2 = v_1t_2 + a_2t_2^2/2$

$s_2 = 35.2*5 - 7.04*5^2/2 = 88 m$

Also the distance from start to where the driver starts braking is

$s_1 = a_1t_1^2/2 = 1.76*20^2/2 = 352$

So the total distance from rest to stop is 352 + 88 = 440 m < 550 m so the car won't hit the limb

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3 years ago

Is there a formula for the 2nd Law of Therodynamics, is so name it?

IrinaK [193]

∆S>_closed integral of dQ/T

There are many equations for different situations of entropy but this is a general one

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4 years ago

what are some challenges of scuba diving and how do pressure variations in depth affect our ability to explore the ocean?

sergiy2304 [10]

Pressure variations affect our ability to explore by limiting how deep we can go. this reason is because as we go deeper in the ocean the pressure increases and can crush you if you go deep enough.

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3 years ago

A tennis ball weighs 2 kg and is traveling at 10 meters per second. What is the tennis ball’s kinetic energy? Find the exponent

masha68 [24]

Kinetic energy = 1/2 * mass* speed^2
= 1/2 * 2* 10*10
= 100 J

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3 years ago