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Nitella [24]
3 years ago
14

Alpha Centauri B is a star that is about the same size as the Sun. Why does it appear much smaller and dimmer than the Sun when

seen from Earth? A) It is cooler than the Sun. B) It has less energy than the Sun. C) It is farther away from Earth than the Sun. D) It travels faster around Earth than the Sun.
Biology
2 answers:
lyudmila [28]3 years ago
4 0
C. Although Alpha Centauri B is similar in size to the sun, it is much further away from earth. The sun is 8 minutes away from earth at the speed of light, while Alpha Centauri B and earth is more than 4 light years apart.
REY [17]3 years ago
3 0

Answer:

C) It is farther away from Earth than the Sun.

Explanation:

Alpha Centauri B is a star almost the same size as the sun and with a high energy content, however it is very distant from the earth at a distance of 4.365 ± 0.004 light years, which makes it seen as a small star, not as bright and not as powerful as the sun itself.

The sun, on the other hand, is at a distance of 0.000015692 light years, which means that it is very close and that is why we can perceive its size and luminosity.

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Answer

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8 0
2 years ago
How do the respiratory and excretory systems work together to help people grow and survive
LUCKY_DIMON [66]

Answer:

respiratory and excretory systems are among the two vital systems in our body which work in order to maintain our health or keep our body fit

Explanation:

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4 0
3 years ago
Which of the following is not an example of mechanical control of nonnative species?
olasank [31]

Answer:

The answer is A.

Explanation:

Quizlet said so.

Have a nice day :)

3 0
2 years ago
Read 2 more answers
Which best describes a difference between prokaryotic cells and eukaryotic cells?
MatroZZZ [7]
Prokaryotic cells do not have membrane bound organelles and eukaryotic cells do have membrane bound organelles
4 0
3 years ago
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Explain how the resting potential is created and maintained. (sodium potassium pump) What happens when sodium comes in and potas
MAVERICK [17]

Answer:

The resting membrane potential is created and maintained due to the difference in the total charge or ions present outside and inside of the cell. The resting membrane potential depolarize if sodium come in and and potassium leaves the cell.

Explanation:

The resting membrane is maintained and created by the distribution of potassium and sodium ions. The membrane potential of a resting cell is -70mV (negative) because more sodium ions is present outside the cell than the potassium ions present inside the cell.

When the sodium ions enter inside the cell and potassium ions move outside the cell, the inside of the cell becomes more positive as compared to the outside and the membrane potential changes from -70 mV to +30 mV. The cells will depolarize due to the accumulation of sodium ions inside the cell.

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3 years ago
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