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Troyanec [42]
3 years ago
15

What is the critical angle of a light beam passing drim a medium(n=2) to a medium (n=1.5)

Physics
1 answer:
DIA [1.3K]3 years ago
6 0

Answer:

it is a sad day for rain to fall. Ill answer your question later

Explanation:

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What is the most common gas in the atmosphere
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The most common gas in the atmosphere is nitrogen, because it is found in all living things, and as you may know, there are billions of living things here on Earth.
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Which item is an example of a primary source? A. An academic paper analyzing John F. Kennedy's presidency B. A transcript of a p
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A transcript of a presidential speech (APEX Class ;)

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Which of the following is a likely life cycle of a star?
melomori [17]

Answer:

D.

Explanation:

But this just happen for big stars, like more than 20x the Sun mass.

Shortly: A nebula is a cloud of gas and dust, the material starts to be acummuleted and became a protostar (is like a big planet, almost  a star). With enought mass this is a star, burn hydrogen and transform it in Helium.

This occurs in Main Sequence, is about almost all the life time of a star. Then starts the lack of hydrogen. Gravity compress everything, pressure goes up and heat all. Too much energy, Helium get burned and the star grews fast, became a Red Giant. Time pass and the fuel is over, no more making fusion, gravity compress the star, too much strenght, colapses, neutron star.

If it have pretty mass, ok. If have more than like 2x Sun mass, became a blackhole.

7 0
3 years ago
Josh is designing a lab to separate a mixture of salt and water. He looks at all the ways to separate a mixture but decides that
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The best method to separates mixture of salt and water is evaporation. Take a small sample of mixture in a china dish. Heat it till all water evaporate. The residual remain is salt. Josh should use this method to separate salt from water.

8 0
3 years ago
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According to Coulomb’s Law, the force between two charged objects is related to _____.
Natasha_Volkova [10]

Answer:

A.) the inverse of the square of the distance separating them

Explanation:

Coulombs law states that "the force of attraction between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them."

Mathematically, F = kq1q2/r²

Where q1 and q2 are the charges

r is the distance between the charges.

According to the law, the force between two charged objects is related to the inverse of the square of the distance separating them.

5 0
3 years ago
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