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dybincka [34]
2 years ago
11

How much of the matter in the universe is comprised of atoms?

Physics
2 answers:
andreyandreev [35.5K]2 years ago
7 0

Answer:

4.6%.

Explanation:

Actually, the belief before few decades ago is that the whole of the universe comprises of atoms, you, me, stars and so on comprises of atoms that is protons, neutrons and electrons but now according to some researches made, the whole of the universe does not contain atoms naturally as their are some unseen things in the universe. According to the researches by astrophysicists the universe contains about 4.6 percent atoms and the others are dark energy which has the largest portion of the universe of about 71.4 percent and cold dark matter which contains about 24 Percent of the universe.

Deffense [45]2 years ago
4 0

Explanation:

Atoms are the components of ordinary matter, also called baryonic matter, which only represents 4% of the universe, while the remaining 96% would be formed by what is known as dark matter and dark energy which constitute two of the unsolved problems in physics.

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What is the speed of an object that travels 20 meters in 4 seconds?
Iteru [2.4K]

Given:-

  • Distance covered by the particle (s) = 20 m
  • Time taken (t) = 4 seconds

To Find: Speed of it.

We know,

v = s/t

where,

  • v = Speed,
  • s = Distance &
  • t = Time taken.

Putting the values,

v = (20 m)/(4 s)

→ v = 5 m/s (Ans.)

5 0
3 years ago
Is -3 a solution to equation 3x -5 = 4+ 2x
Elodia [21]

Answer:

No!

Explanation:

The correct answer is x = 9.

5 0
3 years ago
1. If Randy races his F-150 down Highway 1 for 2560 meters in 60 seconds, what is his average speed?
Nimfa-mama [501]

The average speed is 42.7 m/s

Explanation:

The speed of an object in uniform motion (=moving at constant speed) is given by the equation:

v=\frac{d}{t}

where

v is the speed

d is the distance

t is the time

For the car in this problem, we have:

d = 2560 m (distance)

t = 60 s (time)

Solving the equation, we find the average speed:

v=\frac{2560}{60}=42.7 m/s

Learn more about speed:

brainly.com/question/8893949

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4 0
2 years ago
Which theory of language development and acquisition includes the concepts of reinforcement, stimuli control, deprivation, and a
uranmaximum [27]

The answer is: a. Skinner’s idea of language

<span>Skinner was a psychologists and one of the first behaviorists. In his language acquisition theory, he states that language acquisition is an environmental and social phenomenon; therefore, children acquire language through operant conditioning, which includes stimuli control, reinforcement (positive and aversive), and deprivation.</span>

6 0
3 years ago
Read 2 more answers
Suppose that there are two very large reservoirs of water, one at a temperature of 91.0 °C and one at a temperature of 17.0 °C.
stepan [7]

Answer:32.83

Explanation:

Given

T_H=91^{\circ}\approx 364 K

T_L=17^{\circ}\approx 290 K

Q=46830 J

Total Entropy change of system

\Delta s=-\frac{Q}{T_H}+\frac{Q}{T_L}

\Delta s=-\frac{46830}{364}+\frac{46830}{290}

\Delta s=-128.65 +161.48=32.83 J/K

6 0
2 years ago
Read 2 more answers
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