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4 years ago

What causes an aurora?

Physics

1 answer:

geniusboy [140]4 years ago

6 0

Answer:

When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.

Explanation:

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I NEED ANSWERS!

Neporo4naja [7]

Answer:

A water fall?

Explanation:

It's an example I took in my science class

5 0

3 years ago

Read 2 more answers

A paper-filled capacitor is charged to a potential difference of V 0 = 2.5 V V0=2.5 V . The dielectric constant of paper is κ =

forsale [732]

Answer:

$V_1=9.25 V$

Explanation:

We are given that

$V_0=2.5 V$

$k=3.7$

We have to find the new potential difference of the capacitor.

When the capacitor is disconnected then the charge stored in capacitor is constant.

When we introduce material of dielectric constant k between the plates of capacitor then the capacitance of capacitor increases k times.

$C_0=\frac{Q}{V_0}$

$C'=kC=\frac{kQ}{V_1}$

$\frac{Q}{V_0}=\frac{kQ}{V_1}$

$V_0=\frac{V_1}{k}$

Using the formula

$V_0=\frac{V_1}{k}$

$V_1=V_0k=2.5\times 3.7=9.25 V$

Hence, the new potential difference $V_1=9.25 V$

5 0

3 years ago

Anna is conducting an experiment to determine how weather affects cell phone reception. She is trying to decide the best way to

Anestetic [448]

Your answer should be D.
Hope this helps :)

5 0

3 years ago

Which disadvantage of nuclear power use poses the greatest threat to the environment?

Mekhanik [1.2K]

The correct answer is The storage and management of radioactive wastes

Explanation:

In general, nuclear reactions (changes in the nucleus of an atom such as fission) release a lot of energy including a lot of heat. Moreover, this heat is used by humans to obtain electricity and other types of energy, which is known as a nuclear power. This type of power is considered positive because it does not emit carbon and it is quite efficient.

However, in most cases, it is a threat to the environment and living beings because storing and managing the wastes of this type of power is difficult and expensive. Indeed, dealing with the wastes of nuclear power requires complex infrastructure, and any accident or leaking leads to serious consequences from the death of those exposed to the wastes to permanent loss of diversity or changes in nearby areas.

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3 years ago

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The Sloan Digital Sky Survey includes many thousands of galaxies in its spectroscopic catalogs. How are the distances to most of

Katarina [22]

The distances to the most of these galaxies estimated from their red shifts and the application of Hubble's Law.

<h3>What is Hubble's Law?</h3>

The discovery in physical cosmology that galaxies are travelling away from Earth at rates proportionate to their distance is known as Hubble's law, often referred to as the Hubble-Lemaître law or Lemaître's law. In other words, they are travelling away from Earth more quickly the more away they are. The redshift of the galaxies—a shift in the light they produce toward the red end of the visible spectrum—has been used to calculate their velocities.

The Sloan Digital Sky Survey includes many thousands of galaxies in its spectroscopic catalogs. The distances to the most of these galaxies estimated

from their red shifts and the application of Hubble's Lawh

to learn more about Hubble's law go to - brainly.com/question/3050512

#SPJ4

3 0

2 years ago