3 years ago

Earth's magnetic field is generated by

Physics

2 answers:

evablogger [386]3 years ago

6 0

The movement of electrical charges inside the earth

qwelly [4]3 years ago

5 0

Answer:

Explanation:

The magnetic field, is generated by electric currents due to the motion of convection currents of molten iron in the Earth's outer core : these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

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If the net force on an object is in a negative direction, what will the direction of the resulting acceleration be?

Verdich [7]

Newton's 2nd law says: Force = (mass) x (acceleration) .

I wrote Force and acceleration in bold letters because
they're both vectors ... they have size and direction.

The equation is saying that the Force and the acceleration
are both in the same direction.

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4 years ago

Q:Why does a sheet of sandpaper become warm when you rub it against a wooden board?

otez555 [7]

Answer: D and friction

Explanation:

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3 years ago

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In Trial III, a different, looser, spring is used; its force constant is 23.1 N/m. The suspended mass is the same as the one in

cricket20 [7]

Answer:

T=0.827s

Explanation:

The period of a spring can be calculated with the equation

$T=2\pi w$

But we know as well that w is given by,

$w=\sqrt{\frac{k}{m}}$

Replacing,

$w=\frac{2\pi}{T}= \sqrt{\frac{k}{m}}\\T=2\pi\sqrt{\frac{k}{m}}\\T=2\pi\sqrt{\frac{0.4}{23.1}}$

So we have that

$T=0.827s$

7 0

3 years ago

Consider a weather balloon floating in the air. There are three forces acting on this balloon: the force of gravity is FG, the f

Andreyy89

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3 years ago

a horse moves a sleigh 1.00 kilometer by applying a horizontal 2,000 newton on its harness for 45 minutes.

sineoko [7]

Work:

1 kilometer = 1000 meters
45 × 60 = 2700

W = F × D
W = 2,000 N × 1,000 m
W = 2,000,000 J

P = W ÷ t
P = 2,000,000 J ÷ 2,700 s
P = 741 watts

Answer:

741 watts of horse power.

5 0

3 years ago