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yulyashka [42]
3 years ago
10

Which of the following best describes what we mean by the universe? (A) all the galaxies in all the superclusters(B) the sum tot

al of all matter and energy(C) a vast collection of stars that number as many as the grains of sand on all the beaches on Earth(D) our Milky Way Galaxy
Physics
1 answer:
EastWind [94]3 years ago
3 0

Answer:

(B) the sum total of all matter and energy

Explanation:

Universe comprises of all the matter and energy that exists in space. It contains billions of stars, planets and interstellar matter that is clouds of dust and gas. There is large amount of the empty space in between.

Universe contains stars as many as grains of sand on all beaches on the Earth. These stars are grouped into galaxies. Milky Way is one of the galaxies.  Galaxies can be grouped into clusters and super-clusters.

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A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from
Furkat [3]

A light ray in air enters and passes through a block of glass , the speed will remain same after it emerges from the block

When a light ray enters into the glass then the speed of the light will get decreased because as a light ray enters into a denser medium , the speed of light get decreased . But when the light ray emerges out from glass , it going from denser to rarer medium , due to which speed will increase and come to same value as it was while entering the glass .

To learn more about denser medium here :

brainly.com/question/13613040

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3 0
1 year ago
Complete the mechanism for the given reaction by adding the missing bonds, charges, nonbonding electrons, and curved arrows
kipiarov [429]

The mechanism for the given reaction by adding the missing bonds, charges, nonbonding electrons, and curved arrows is as represented in the attached image.

<h3>Mechanism of Organic Reactions</h3>

The representation of an organic reaction mechanism typically includes designation of the overall reaction type (which may be substitution, addition, elimination, oxidation, reduction, or rearrangement), the presence of any reactive intermediates, the nature of the reagent that initiates the reaction, the presence of any catalysis as facilitated by a catalyst, and ultimately it's stereochemistry.

Read more on mechanism of Organic Reactions;

brainly.com/question/20067487

6 0
2 years ago
Read 2 more answers
Identify each wave interaction based on how it changes direction.___
Helen [10]

Answer: Hmm... Ok lets see here 1st one would be Diffraction, 2nd one would be Refraction, and the 3rd would be Reflection, and the 4rth one should be Reflection as Well :D

Explanation: Hole This Helps :)

7 0
3 years ago
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A roller skate coming to a stop because of
Elden [556K]

Answer:

Laws of the Park: Newton's First Law

If you understand how a skateboard starts and stops, then you already know something about Newton's first law of motion. This law was developed by English scientist Isaac Newton around 1700.

Explanation:

Hope this helps..

8 0
2 years ago
A 0.0600-kilogram ball traveling at 60.0 meters per second hits a concrete wall. What speed must a 0.0100-kilogram bullet have i
GarryVolchara [31]

Answer:

the speed that have 0.0100 kilogram bullet with the similar momentum magnitude is 360 m/s

Explanation:

The computation of the speed that have 0.0100 kilogram bullet with the similar momentum magnitude is as follows:

The ball momentum is

\Delta Q = mv\\\\\Delta Q = 6 \times 1^-2 \times 60\\\\\Delta Q = 3.6 kg \times m/s

As there is a similar momentum

So,

\Delta Q = MV\\\\3.6 = 10^-2V\\\\V = 360 m/s

Hence, the speed that have 0.0100 kilogram bullet with the similar momentum magnitude is 360 m/s

5 0
2 years ago
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