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4 years ago

An aurora occurs when _____.

Physics

2 answers:

drek231 [11]4 years ago

6 0

The correct answer is A. Charged particles from the sun exite the atmosphere near the poles to create auroras.

Bas_tet [7]4 years ago

6 0

Answer:

An aurora occurs when <u>the Earth's magnetic field is overwhelmed by charged ions.</u>

Explanation:

The Earth acts as a huge bar magnet. Magnetic field surrounds the Earth. when the charged particles coming from the sun interact with the magnetic field, beautiful colors can be seen in the sky. These are known as auroras. The color depends upon the gas present in the atmosphere. The electrons of gain energy and jump to higher level and then release photons when return back to its level.

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Consider the moon rocks that the crew of Apollo 11 brought back from Mare Tranquillitatis. Within the zircon crystals within the

NikAS [45]

Answer:

2.9 billion years

Explanation:

6 0

3 years ago

What Is meant By MA of a machine is 2?

stich3 [128]

Answer:

See below ~

Explanation:

The Mechanical Advantage (MA) is defined as the ratio between the force produced by the machine to the force applied to it.

=============================================================

So,

⇒ $\frac{F(out)}{F(in)} = 2$

⇒ This means that the force produced is twice the applied force

7 0

2 years ago

What is a method to predict an earthquake?

Pie

Measurements of microtremors, slope of the land, and motion of tectonic plates predict earthquakes. But we can't predict WHEN accurately enough yet to make the prediction useful to the general public.

8 0

3 years ago

Galaxies contain on average about 100 billion stars. These stars are held together in galaxies by the force of _________________

Butoxors [25]

Its not a or c just saying

7 0

3 years ago

Read 2 more answers

A mass weighing 4 pounds is attached to a spring whose constant is 2 lb/ft. The medium offers a damping force that numerically e

Neko [114]

Answer:

the time at which it passes through the equilibrum position is:

t = 0.1 second

Explanation:

given

w= 4pounds

k(spring constant) = 2lb/ft

g(gravitational constant) = 10m/s² = 32ft/s²

β(initial point above equilibrum) = 1

velocity = 14ft/s

attached is an image showing the calculations, because some of the parameters aren't convenient to type.

3 0

3 years ago